Date   

moderated Re: Improved lunar tracking speed ?

Howard Ritter
 

Seems doubtful. The lunar rate relative to the sidereal is about 1 Moon diameter per hour, 30’/h, 1800”/h, 0.5”/s, <0.1” per video frame. Tracking error that remains after a quick alignment with a polar scope might be several times that, but still a fraction of atmospheric seeing.

—howard

On Dec 23, 2021, at 9:39 AM, Ray Gralak <iogroups@...> wrote:

I have plenty more lunar and planetary images for anyone who would like to see them. None required good
tracking.
However, if tracking is improved, the number of good video frames you can use to create a final image should go up.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of thefamily90 Phillips
Sent: Thursday, December 23, 2021 6:33 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Improved lunar tracking speed ?

I have plenty more lunar and planetary images for anyone who would like to see them. None required good
tracking.

Jim P

Get Outlook for iOS <https://aka.ms/o0ukef>
________________________________

From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of thefamily90 Phillips
<thefamily90@...>
Sent: Thursday, December 23, 2021 9:27:32 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?

You just do not need good tracking for lunar and planetary imaging.

JimP

Get Outlook for iOS
<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Faka.ms%2Fo0ukef&data=04%7C01%7
C%7C5164fc3adb01473f89cf08d9c6205ec0%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C6377586
64601142507%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLC
JXVCI6Mn0%3D%7C3000&sdata=%2BKDpGCpVFx%2FidB93bnWQU29gaQmVU9MrTBTBEdz7eLA%3D&rese
rved=0>
________________________________

From: jim phillips <thefamily90@...>
Sent: Thursday, December 23, 2021 9:26:20 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?

Image.jpeg


Get Outlook for iOS
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64601142507%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLC
JXVCI6Mn0%3D%7C3000&sdata=%2BKDpGCpVFx%2FidB93bnWQU29gaQmVU9MrTBTBEdz7eLA%3D&rese
rved=0>
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From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of thefamily90 Phillips
<thefamily90@...>
Sent: Thursday, December 23, 2021 9:24:21 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?

Image.jpegImage.jpeg

Get Outlook for iOS
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C%7C5164fc3adb01473f89cf08d9c6205ec0%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C6377586
64601142507%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLC
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________________________________

From: jim phillips <thefamily90@...>
Sent: Wednesday, December 22, 2021 5:03:00 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?

Can't seem to upload an image right now. I'll work on it.

Jim P

Get Outlook for iOS
<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Faka.ms%2Fo0ukef&data=04%7C01%7
C%7C5164fc3adb01473f89cf08d9c6205ec0%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C6377586
64601298753%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLC
JXVCI6Mn0%3D%7C3000&sdata=j2PYEw%2FkXzr3oUNV0y3sqejOhOyzFvL4ZtA64HAt%2FNA%3D&reserved
=0>
________________________________

From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of thefamily90 Phillips
<thefamily90@...>
Sent: Wednesday, December 22, 2021 4:57:42 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?

Not sure why any lunar imager would need perfect tracking of the Moon. Everyone I know suit images the
moon and planets takes an AVI and then uses software to pick out the best frames then stack them and once
stacked processed in various software programs. When stacking, an X can be placed on a particular crater
and the software stacking the images will stack them perfectly on that crater. Again, there is no need for
perfect tracking when imaging the lunar surface (or a planet's surface)
Here are a couple of images with a 10 inch triplet refractor and the image moved all over the screen while
tracking. None of my scopes are perfectly aligned especially when you consider what Astro photographers
scopes have to be. You just keep the image on the laptop screen and that's all you need to do.

JimP








Get Outlook for iOS
<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Faka.ms%2Fo0ukef&data=04%7C01%7
C%7C5164fc3adb01473f89cf08d9c6205ec0%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C6377586
64601298753%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLC
JXVCI6Mn0%3D%7C3000&sdata=j2PYEw%2FkXzr3oUNV0y3sqejOhOyzFvL4ZtA64HAt%2FNA%3D&reserved
=0>
________________________________

From: main@ap-gto..groups.io <main@ap-gto.groups.io> on behalf of Roland Christen via groups.io
<chris1011@...>
Sent: Wednesday, December 22, 2021 4:13:00 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?

All the AP mounts have the capability of tracking non-stellar objects, including the Moon. If the ephemeris is
known then APCC Horizons can track it. I will let ray comment on this since he is infinitely more knowledgeable
on that subject.


Rolando

-----Original Message-----
From: christian viladrich <c.viladrich@...>
To: main@ap-gto.groups.io
Sent: Wed, Dec 22, 2021 1:25 pm
Subject: [ap-gto] Improved lunar tracking speed ?


Hello AP users,

The apparent motion of the Moon with respect to the stars is usually approximated by 0.5 arsec/s. However
this is an approximation and the true value changes from day to day (see delta alpha x cos delta (arsec/min)
column in the table below).
This approximation is a real pain when doing high resolution images of the Moon with 14" telescopes or larger.

By high resolution, I mean this kind of picture :

http://astrosurf.com/viladrich/astro/moon/closeup/RC500/Moretus-26octo2021-3h41UT-RC500-red-ASI1600-
rev.jpg
<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fastrosurf.com%2Fviladrich%2Fastro%2
Fmoon%2Fcloseup%2FRC500%2FMoretus-26octo2021-3h41UT-RC500-red-ASI1600-
rev.jpg&data=04%7C01%7C%7C5164fc3adb01473f89cf08d9c6205ec0%7C84df9e7fe9f640afb435aaaaaaaaaa
aa%7C1%7C0%7C637758664601298753%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV
2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=7SsxmHyStMFBxgJw1FQH1rulyKxp7MMKRFcj
OLKpLsc%3D&reserved=0>
This one was taken with a 500 mm RC telescope on an AP1600 GTOCP4 mount. Smallest visible craters are in
the range of 350 m. Because the lunar tracking speed is approximated, we have to constantly play with the
alpha slow motion to recenter the field imaged. This would be a huge improvement if we could have a tracking
speed based on lunar ephemerid.
Would it be possible thanks to the increased power of the processors embedded in the GTOCP 4 or CP 5 ?
I admit this is a very specialized demand, very far from the classic use of equatorial mounts.
Best regards
Christian Viladrich
http://astrosurf.com/viladrich/astro/moon/closeup/RC500/Moon-RC500.html
<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fastrosurf.com%2Fviladrich%2Fastro%2
Fmoon%2Fcloseup%2FRC500%2FMoon-
RC500.html&data=04%7C01%7C%7C5164fc3adb01473f89cf08d9c6205ec0%7C84df9e7fe9f640afb435aaaaaaa
aaaaa%7C1%7C0%7C637758664601298753%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIj
oiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=dlCDTshQSqhx7fd6Si%2FNiwiVQt36NmkUS
v1%2FaAw85oI%3D&reserved=0>


GTOCP4 or GTOCP5


--
Roland Christen
Astro-Physics





Re: #APCC Using APCC with two mounts #APCC

Ray Gralak
 

If you are using both APCC simultaneously on both mounts, you must purchase a second license. Additional licenses are much cheaper. From the A-P web site:

Additional APCC Standard License (APCC-ST-A): $50
Additional APCC PRO License (APCC-PRO-A): $100

You can find more licensing and pricing details on the "Order Info" tab at this link:

https://www.astro-physics.com/apcc

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of psparkman via groups.io
Sent: Wednesday, December 22, 2021 6:27 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] #APCC Using APCC with two mounts

I am the proud new owner of an AP1600 to go with my AP1100. I have APCC Pro on a computer that I have
been using with my AP1100. I will be setting up the 1600 in a permanent observatory in the backyard, and
using the 1100 on a portable pier both at home and at a dark site. I will be setting up another imaging
computer for the 1600 permanent setup, and using the current computer with the 1100. Can I use the same
license of APCC Pro on both computers with two mounts?


moderated Re: Improved lunar tracking speed ?

Ray Gralak
 

I have plenty more lunar and planetary images for anyone who would like to see them. None required good
tracking.
However, if tracking is improved, the number of good video frames you can use to create a final image should go up.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of thefamily90 Phillips
Sent: Thursday, December 23, 2021 6:33 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Improved lunar tracking speed ?

I have plenty more lunar and planetary images for anyone who would like to see them. None required good
tracking.

Jim P

Get Outlook for iOS <https://aka.ms/o0ukef>
________________________________

From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of thefamily90 Phillips
<thefamily90@...>
Sent: Thursday, December 23, 2021 9:27:32 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?

You just do not need good tracking for lunar and planetary imaging.

JimP

Get Outlook for iOS
<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Faka.ms%2Fo0ukef&data=04%7C01%7
C%7C5164fc3adb01473f89cf08d9c6205ec0%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C6377586
64601142507%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLC
JXVCI6Mn0%3D%7C3000&sdata=%2BKDpGCpVFx%2FidB93bnWQU29gaQmVU9MrTBTBEdz7eLA%3D&rese
rved=0>
________________________________

From: jim phillips <thefamily90@...>
Sent: Thursday, December 23, 2021 9:26:20 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?

Image.jpeg


Get Outlook for iOS
<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Faka.ms%2Fo0ukef&data=04%7C01%7
C%7C5164fc3adb01473f89cf08d9c6205ec0%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C6377586
64601142507%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLC
JXVCI6Mn0%3D%7C3000&sdata=%2BKDpGCpVFx%2FidB93bnWQU29gaQmVU9MrTBTBEdz7eLA%3D&rese
rved=0>
________________________________

From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of thefamily90 Phillips
<thefamily90@...>
Sent: Thursday, December 23, 2021 9:24:21 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?

Image.jpegImage.jpeg

Get Outlook for iOS
<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Faka.ms%2Fo0ukef&data=04%7C01%7
C%7C5164fc3adb01473f89cf08d9c6205ec0%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C6377586
64601142507%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLC
JXVCI6Mn0%3D%7C3000&sdata=%2BKDpGCpVFx%2FidB93bnWQU29gaQmVU9MrTBTBEdz7eLA%3D&rese
rved=0>
________________________________

From: jim phillips <thefamily90@...>
Sent: Wednesday, December 22, 2021 5:03:00 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?

Can't seem to upload an image right now. I'll work on it.

Jim P

Get Outlook for iOS
<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Faka.ms%2Fo0ukef&data=04%7C01%7
C%7C5164fc3adb01473f89cf08d9c6205ec0%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C6377586
64601298753%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLC
JXVCI6Mn0%3D%7C3000&sdata=j2PYEw%2FkXzr3oUNV0y3sqejOhOyzFvL4ZtA64HAt%2FNA%3D&reserved
=0>
________________________________

From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of thefamily90 Phillips
<thefamily90@...>
Sent: Wednesday, December 22, 2021 4:57:42 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?

Not sure why any lunar imager would need perfect tracking of the Moon. Everyone I know suit images the
moon and planets takes an AVI and then uses software to pick out the best frames then stack them and once
stacked processed in various software programs. When stacking, an X can be placed on a particular crater
and the software stacking the images will stack them perfectly on that crater. Again, there is no need for
perfect tracking when imaging the lunar surface (or a planet's surface)
Here are a couple of images with a 10 inch triplet refractor and the image moved all over the screen while
tracking. None of my scopes are perfectly aligned especially when you consider what Astro photographers
scopes have to be. You just keep the image on the laptop screen and that's all you need to do.

JimP








Get Outlook for iOS
<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Faka.ms%2Fo0ukef&data=04%7C01%7
C%7C5164fc3adb01473f89cf08d9c6205ec0%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C6377586
64601298753%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLC
JXVCI6Mn0%3D%7C3000&sdata=j2PYEw%2FkXzr3oUNV0y3sqejOhOyzFvL4ZtA64HAt%2FNA%3D&reserved
=0>
________________________________

From: main@ap-gto..groups.io <main@ap-gto.groups.io> on behalf of Roland Christen via groups.io
<chris1011@...>
Sent: Wednesday, December 22, 2021 4:13:00 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?

All the AP mounts have the capability of tracking non-stellar objects, including the Moon. If the ephemeris is
known then APCC Horizons can track it. I will let ray comment on this since he is infinitely more knowledgeable
on that subject.


Rolando

-----Original Message-----
From: christian viladrich <c.viladrich@...>
To: main@ap-gto.groups.io
Sent: Wed, Dec 22, 2021 1:25 pm
Subject: [ap-gto] Improved lunar tracking speed ?


Hello AP users,

The apparent motion of the Moon with respect to the stars is usually approximated by 0.5 arsec/s. However
this is an approximation and the true value changes from day to day (see delta alpha x cos delta (arsec/min)
column in the table below).
This approximation is a real pain when doing high resolution images of the Moon with 14" telescopes or larger.

By high resolution, I mean this kind of picture :

http://astrosurf.com/viladrich/astro/moon/closeup/RC500/Moretus-26octo2021-3h41UT-RC500-red-ASI1600-
rev.jpg
<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fastrosurf.com%2Fviladrich%2Fastro%2
Fmoon%2Fcloseup%2FRC500%2FMoretus-26octo2021-3h41UT-RC500-red-ASI1600-
rev.jpg&data=04%7C01%7C%7C5164fc3adb01473f89cf08d9c6205ec0%7C84df9e7fe9f640afb435aaaaaaaaaa
aa%7C1%7C0%7C637758664601298753%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV
2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=7SsxmHyStMFBxgJw1FQH1rulyKxp7MMKRFcj
OLKpLsc%3D&reserved=0>
This one was taken with a 500 mm RC telescope on an AP1600 GTOCP4 mount. Smallest visible craters are in
the range of 350 m. Because the lunar tracking speed is approximated, we have to constantly play with the
alpha slow motion to recenter the field imaged. This would be a huge improvement if we could have a tracking
speed based on lunar ephemerid.
Would it be possible thanks to the increased power of the processors embedded in the GTOCP 4 or CP 5 ?
I admit this is a very specialized demand, very far from the classic use of equatorial mounts.
Best regards
Christian Viladrich
http://astrosurf.com/viladrich/astro/moon/closeup/RC500/Moon-RC500.html
<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fastrosurf.com%2Fviladrich%2Fastro%2
Fmoon%2Fcloseup%2FRC500%2FMoon-
RC500.html&data=04%7C01%7C%7C5164fc3adb01473f89cf08d9c6205ec0%7C84df9e7fe9f640afb435aaaaaaa
aaaaa%7C1%7C0%7C637758664601298753%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIj
oiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=dlCDTshQSqhx7fd6Si%2FNiwiVQt36NmkUS
v1%2FaAw85oI%3D&reserved=0>


GTOCP4 or GTOCP5


--
Roland Christen
Astro-Physics


moderated Re: Improved lunar tracking speed ?

thefamily90 Phillips
 

I have plenty more lunar and planetary images for anyone who would like to see them. None required good tracking.

Jim P


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of thefamily90 Phillips <thefamily90@...>
Sent: Thursday, December 23, 2021 9:27:32 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?
 
You just do not need good tracking for lunar and planetary imaging.

JimP

From: jim phillips <thefamily90@...>
Sent: Thursday, December 23, 2021 9:26:20 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?
 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of thefamily90 Phillips <thefamily90@...>
Sent: Thursday, December 23, 2021 9:24:21 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?
 

From: jim phillips <thefamily90@...>
Sent: Wednesday, December 22, 2021 5:03:00 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?
 
Can’t seem to upload an image right now. I’ll work on it.

Jim P

From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of thefamily90 Phillips <thefamily90@...>
Sent: Wednesday, December 22, 2021 4:57:42 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?
 
Not sure why any lunar imager would need perfect tracking of the Moon. Everyone I know suit images the moon and planets takes an AVI and then uses software to pick out the best frames then stack them and once stacked processed in various software programs. When stacking, an X can be placed on a particular crater and the software stacking the images will stack them perfectly on that crater. Again, there is no need for perfect tracking when imaging the lunar surface (or a planet’s surface)
Here are a couple of images with a 10 inch triplet refractor and the image moved all over the screen while tracking. None of my scopes are perfectly aligned especially when you consider what Astro photographers scopes have to be. You just keep the image on the laptop screen and that’s all you need to do. 

JimP 







From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Roland Christen via groups.io <chris1011@...>
Sent: Wednesday, December 22, 2021 4:13:00 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?
 
All the AP mounts have the capability of tracking non-stellar objects, including the Moon. If the ephemeris is known then APCC Horizons can track it. I will let ray comment on this since he is infinitely more knowledgeable on that subject.

Rolando

-----Original Message-----
From: christian viladrich <c.viladrich@...>
To: main@ap-gto.groups.io
Sent: Wed, Dec 22, 2021 1:25 pm
Subject: [ap-gto] Improved lunar tracking speed ?

Hello AP users,
The apparent motion of the Moon with respect to the stars is usually approximated by 0.5 arsec/s. However this is an approximation and the true value changes from day to day (see delta alpha x cos delta (arsec/min) column in the table below).
This approximation is a real pain when doing high resolution images of the Moon with 14" telescopes or larger.
By high resolution, I mean this kind of picture :
This one was taken with a 500 mm RC telescope on an AP1600 GTOCP4 mount. Smallest visible craters are in the range of 350 m. Because the lunar tracking speed is approximated, we have to constantly play with the alpha slow motion to recenter the field imaged. This would be a huge improvement if we could have a tracking speed based on lunar ephemerid.
Would it be possible thanks to the increased power of the processors embedded in the GTOCP 4 or CP 5 ?
I admit this is a very specialized demand, very far from the classic use of equatorial mounts.
Best regards
Christian Viladrich
GTOCP4 or GTOCP5

--
Roland Christen
Astro-Physics


Re: Park Position 1 Warning

Ray Gralak
 

Hi Konstantin,

I tried to install the 1.9.3.1 on my win7 computer. I get the following message:
"APCC Pro Installer: before installing this version you must uninstall APCC Pro from the Control Panel."
You must uninstall APCC Pro using Windows Control Panel. This may help:

https://support.microsoft.com/en-us/topic/windows-7-how-to-properly-uninstall-programs-8c95f23f-5627-8b73-ef98-565cff984446

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Konstantin v. Poschinger via
groups.io
Sent: Thursday, December 23, 2021 3:05 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Park Position 1 Warning

Hi Ray,

I tried to install the 1.9.3.1 on my win7 computer. I get the following message:
"APCC Pro Installer: before installing this version you must uninstall APCC Pro from the Control Panel."
Sorry I don’t know what to do. I use a german Win 7.

Greetings an a happy christmas

Konstantin

Konstantin v. Poschinger

Hammerichstr. 5
22605 Hamburg
040/8805747
0171 1983476


Am 22.12.2021 um 08:07 schrieb Ray Gralak <iogroups@...>:

I have not yet updated screenshots in their help files so they have not yet been posted officially, but
these are the latest release builds resulting from earlier beta testing:

AP V2 driver 5.40.01:
https://www..gralak.com/apdriver/AstroPhysics_V2_Setup_5.40.01.exe
<https://www.gralak.com/apdriver/AstroPhysics_V2_Setup_5.40.01.exe>

APCC Pro 1.9.3.1
https://www.apastrosoftware.com/apcc_download/APCC_Pro_Setup_1.9.3.1.exe

-Ray



-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Alex
Sent: Tuesday, December 21, 2021 10:57 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Park Position 1 Warning

I'm running APCC Pro 1.9.1.1 which I believe was some beta that update Horizons to work with
the latest JPL
ephemeris format, and the driver is 5.30.10. If it's permission issues, what do I need to check?

Alex










moderated Re: Improved lunar tracking speed ?

thefamily90 Phillips
 

You just do not need good tracking for lunar and planetary imaging.

JimP


From: jim phillips <thefamily90@...>
Sent: Thursday, December 23, 2021 9:26:20 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?
 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of thefamily90 Phillips <thefamily90@...>
Sent: Thursday, December 23, 2021 9:24:21 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?
 

From: jim phillips <thefamily90@...>
Sent: Wednesday, December 22, 2021 5:03:00 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?
 
Can’t seem to upload an image right now. I’ll work on it.

Jim P

From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of thefamily90 Phillips <thefamily90@...>
Sent: Wednesday, December 22, 2021 4:57:42 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?
 
Not sure why any lunar imager would need perfect tracking of the Moon. Everyone I know suit images the moon and planets takes an AVI and then uses software to pick out the best frames then stack them and once stacked processed in various software programs. When stacking, an X can be placed on a particular crater and the software stacking the images will stack them perfectly on that crater. Again, there is no need for perfect tracking when imaging the lunar surface (or a planet’s surface)
Here are a couple of images with a 10 inch triplet refractor and the image moved all over the screen while tracking. None of my scopes are perfectly aligned especially when you consider what Astro photographers scopes have to be. You just keep the image on the laptop screen and that’s all you need to do. 

JimP 







From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Roland Christen via groups.io <chris1011@...>
Sent: Wednesday, December 22, 2021 4:13:00 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?
 
All the AP mounts have the capability of tracking non-stellar objects, including the Moon. If the ephemeris is known then APCC Horizons can track it. I will let ray comment on this since he is infinitely more knowledgeable on that subject.

Rolando

-----Original Message-----
From: christian viladrich <c.viladrich@...>
To: main@ap-gto.groups.io
Sent: Wed, Dec 22, 2021 1:25 pm
Subject: [ap-gto] Improved lunar tracking speed ?

Hello AP users,
The apparent motion of the Moon with respect to the stars is usually approximated by 0.5 arsec/s. However this is an approximation and the true value changes from day to day (see delta alpha x cos delta (arsec/min) column in the table below).
This approximation is a real pain when doing high resolution images of the Moon with 14" telescopes or larger.
By high resolution, I mean this kind of picture :
This one was taken with a 500 mm RC telescope on an AP1600 GTOCP4 mount. Smallest visible craters are in the range of 350 m. Because the lunar tracking speed is approximated, we have to constantly play with the alpha slow motion to recenter the field imaged. This would be a huge improvement if we could have a tracking speed based on lunar ephemerid.
Would it be possible thanks to the increased power of the processors embedded in the GTOCP 4 or CP 5 ?
I admit this is a very specialized demand, very far from the classic use of equatorial mounts.
Best regards
Christian Viladrich
GTOCP4 or GTOCP5

--
Roland Christen
Astro-Physics


moderated Re: Improved lunar tracking speed ?

thefamily90 Phillips
 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of thefamily90 Phillips <thefamily90@...>
Sent: Thursday, December 23, 2021 9:24:21 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?
 

From: jim phillips <thefamily90@...>
Sent: Wednesday, December 22, 2021 5:03:00 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?
 
Can’t seem to upload an image right now. I’ll work on it.

Jim P

From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of thefamily90 Phillips <thefamily90@...>
Sent: Wednesday, December 22, 2021 4:57:42 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?
 
Not sure why any lunar imager would need perfect tracking of the Moon. Everyone I know suit images the moon and planets takes an AVI and then uses software to pick out the best frames then stack them and once stacked processed in various software programs. When stacking, an X can be placed on a particular crater and the software stacking the images will stack them perfectly on that crater. Again, there is no need for perfect tracking when imaging the lunar surface (or a planet’s surface)
Here are a couple of images with a 10 inch triplet refractor and the image moved all over the screen while tracking. None of my scopes are perfectly aligned especially when you consider what Astro photographers scopes have to be. You just keep the image on the laptop screen and that’s all you need to do. 

JimP 







From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Roland Christen via groups.io <chris1011@...>
Sent: Wednesday, December 22, 2021 4:13:00 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?
 
All the AP mounts have the capability of tracking non-stellar objects, including the Moon. If the ephemeris is known then APCC Horizons can track it. I will let ray comment on this since he is infinitely more knowledgeable on that subject.

Rolando

-----Original Message-----
From: christian viladrich <c.viladrich@...>
To: main@ap-gto.groups.io
Sent: Wed, Dec 22, 2021 1:25 pm
Subject: [ap-gto] Improved lunar tracking speed ?

Hello AP users,
The apparent motion of the Moon with respect to the stars is usually approximated by 0.5 arsec/s. However this is an approximation and the true value changes from day to day (see delta alpha x cos delta (arsec/min) column in the table below).
This approximation is a real pain when doing high resolution images of the Moon with 14" telescopes or larger.
By high resolution, I mean this kind of picture :
This one was taken with a 500 mm RC telescope on an AP1600 GTOCP4 mount. Smallest visible craters are in the range of 350 m. Because the lunar tracking speed is approximated, we have to constantly play with the alpha slow motion to recenter the field imaged. This would be a huge improvement if we could have a tracking speed based on lunar ephemerid.
Would it be possible thanks to the increased power of the processors embedded in the GTOCP 4 or CP 5 ?
I admit this is a very specialized demand, very far from the classic use of equatorial mounts.
Best regards
Christian Viladrich
GTOCP4 or GTOCP5

--
Roland Christen
Astro-Physics


moderated Re: Improved lunar tracking speed ?

thefamily90 Phillips
 


From: jim phillips <thefamily90@...>
Sent: Wednesday, December 22, 2021 5:03:00 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?
 
Can’t seem to upload an image right now. I’ll work on it.

Jim P

From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of thefamily90 Phillips <thefamily90@...>
Sent: Wednesday, December 22, 2021 4:57:42 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?
 
Not sure why any lunar imager would need perfect tracking of the Moon. Everyone I know suit images the moon and planets takes an AVI and then uses software to pick out the best frames then stack them and once stacked processed in various software programs. When stacking, an X can be placed on a particular crater and the software stacking the images will stack them perfectly on that crater. Again, there is no need for perfect tracking when imaging the lunar surface (or a planet’s surface)
Here are a couple of images with a 10 inch triplet refractor and the image moved all over the screen while tracking. None of my scopes are perfectly aligned especially when you consider what Astro photographers scopes have to be. You just keep the image on the laptop screen and that’s all you need to do. 

JimP 







From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Roland Christen via groups.io <chris1011@...>
Sent: Wednesday, December 22, 2021 4:13:00 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?
 
All the AP mounts have the capability of tracking non-stellar objects, including the Moon. If the ephemeris is known then APCC Horizons can track it. I will let ray comment on this since he is infinitely more knowledgeable on that subject.

Rolando

-----Original Message-----
From: christian viladrich <c.viladrich@...>
To: main@ap-gto.groups.io
Sent: Wed, Dec 22, 2021 1:25 pm
Subject: [ap-gto] Improved lunar tracking speed ?

Hello AP users,
The apparent motion of the Moon with respect to the stars is usually approximated by 0.5 arsec/s. However this is an approximation and the true value changes from day to day (see delta alpha x cos delta (arsec/min) column in the table below).
This approximation is a real pain when doing high resolution images of the Moon with 14" telescopes or larger.
By high resolution, I mean this kind of picture :
This one was taken with a 500 mm RC telescope on an AP1600 GTOCP4 mount. Smallest visible craters are in the range of 350 m. Because the lunar tracking speed is approximated, we have to constantly play with the alpha slow motion to recenter the field imaged. This would be a huge improvement if we could have a tracking speed based on lunar ephemerid.
Would it be possible thanks to the increased power of the processors embedded in the GTOCP 4 or CP 5 ?
I admit this is a very specialized demand, very far from the classic use of equatorial mounts.
Best regards
Christian Viladrich
GTOCP4 or GTOCP5

--
Roland Christen
Astro-Physics


Re: Park Position 1 Warning

 

Hi  Konstantin

you need to uninstall the previous version before installing the latest version

On Thu, Dec 23, 2021 at 3:05 AM Konstantin v. Poschinger via groups.io <poschinger=mac.com@groups.io> wrote:
Hi Ray,

I tried to install the 1.9.3.1 on my win7 computer. I get the following message:
"APCC Pro Installer: before installing this version you must uninstall APCC Pro from the Control Panel."
Sorry I don’t know what to do. I use a german Win 7.

Greetings an a happy christmas

Konstantin

Konstantin v. Poschinger

Hammerichstr. 5
22605 Hamburg
040/8805747
0171 1983476

Am 22.12.2021 um 08:07 schrieb Ray Gralak <iogroups@...>:

I have not yet updated screenshots in their help files so they have not yet been posted officially, but these are the latest release builds resulting from earlier beta testing:

AP V2 driver 5.40.01:
https://www.gralak.com/apdriver/AstroPhysics_V2_Setup_5.40.01.exe

APCC Pro 1.9.3.1
https://www.apastrosoftware.com/apcc_download/APCC_Pro_Setup_1.9.3.1.exe

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Alex
Sent: Tuesday, December 21, 2021 10:57 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Park Position 1 Warning

I'm running APCC Pro 1.9.1.1 which I believe was some beta that update Horizons to work with the latest JPL
ephemeris format, and the driver is 5.30.10.  If it's permission issues, what do I need to check?

Alex







--
Brian 



Brian Valente


Re: Park Position 1 Warning

Konstantin v. Poschinger
 

Hi Ray,

I tried to install the 1.9.3.1 on my win7 computer. I get the following message:
"APCC Pro Installer: before installing this version you must uninstall APCC Pro from the Control Panel."
Sorry I don’t know what to do. I use a german Win 7.

Greetings an a happy christmas

Konstantin

Konstantin v. Poschinger

Hammerichstr. 5
22605 Hamburg
040/8805747
0171 1983476

Am 22.12.2021 um 08:07 schrieb Ray Gralak <iogroups@...>:

I have not yet updated screenshots in their help files so they have not yet been posted officially, but these are the latest release builds resulting from earlier beta testing:

AP V2 driver 5.40.01:
https://www.gralak.com/apdriver/AstroPhysics_V2_Setup_5.40.01.exe

APCC Pro 1.9.3.1
https://www.apastrosoftware.com/apcc_download/APCC_Pro_Setup_1.9.3.1.exe

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Alex
Sent: Tuesday, December 21, 2021 10:57 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Park Position 1 Warning

I'm running APCC Pro 1.9.1.1 which I believe was some beta that update Horizons to work with the latest JPL
ephemeris format, and the driver is 5.30.10.  If it's permission issues, what do I need to check?

Alex






moderated Re: Improved lunar tracking speed ?

Andrew Arai
 

Christian,

Stunning 3-dimensional appearance to your image near the moon’s! I’ve admired your lunar images for several years.

Horizons and APCC are probably the best answers for your lunar tracking and almost certainly the most elegant. Software like Firecapture can do lunar tracking too but may be a bit jumpy at your effective focal length. It is recommended that you specify lunar tracking and use the surface tracking mode.

Andrew


#APCC Using APCC with two mounts #APCC

Patrick Sparkman
 

I am the proud new owner of an AP1600 to go with my AP1100.  I have APCC Pro on a computer that I have been using with my AP1100.  I will be setting up the 1600 in a permanent observatory in the backyard, and using the 1100 on a portable pier both at home and at a dark site.  I will be setting up another imaging computer for the 1600 permanent setup, and using the current computer with the 1100.  Can I use the same license of APCC Pro on both computers with two mounts?


Re: Ascom version vs APCC betas

ap@CaptivePhotons.com
 

Thank you Ray. I may update the ASCOM tomorrow, it's happily trying to catch a Crab right now before the moon comes up.

Always worried that I am providing adequate care and feeding of the mount. Appreciate the quick answers.

Linwood

-----Original Message-----
From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Ray Gralak via groups.io
Sent: Wednesday, December 22, 2021 7:05 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Ascom version vs APCC betas

Hi Linwood,

It is okay to update the AP V2 driver v5.40.01, but it is not needed for the APCC beta's. This version of the driver and APCC Pro 1.9.3.1 are "unreleased releases". The last step before releasing them will be to update their help files, which I will be doing over the next few days.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf
Of ap@...
Sent: Wednesday, December 22, 2021 2:28 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] Ascom version vs APCC betas

Ray, in another topic you mentioned:

AP V2 driver 5.40.01:
https://www.gralak.com/apdriver/AstroPhysics_V2_Setup_5.40.01.exe

APCC Pro 1.9.3.1
https://www.apastrosoftware.com/apcc_download/APCC_Pro_Setup_1.9.3.1.e
xe


I am running the latest APCC because I am using and testing the newer
features with NINA. I have 5.30.10 of the ASCOM driver. Is the beta
needed to match for any reason, or was it for unrelated things (in which case I may be better just waiting).

Everything appears to be working just fine; just worried by the juxtaposition in the comment.

Linwood


Re: APCC Not Restarting Cleanly

Jerome A Yesavage
 

Guys, I checked my shutdown scrip and it was written before 2018... Bob's latest version has the bad code removed but it was in my legacy script.... updating ACP changes the model script but not the one is use...  Fixed and tested twice and it works. 

My safety issues are a PITA.... unfortunately I have to use a ROR as that is the only thing I can put up on my own roof legally where I live.  Anyway, if I use the automatic closure I have the pier lowered (fixed) below what the roof can hit.  This unfortunately limits my lowest Alt to about 45 DEG.  What I have done to get lower Alt safely is fully disable the roof in ACP and then run the pier up manually and open and close the roof Manually... I have to keep my wits about me... but I can get down to 12 DEG above the S horizon.  In this case the Mach1 goes into Park 5 and gets under the roof.  I watch it with video....

Nothing is simple. 

I cannot find a failsafe way to run the Pier-tech roof and pier in concert.... in theory this is possible.... but I have never gotten it to work reliably.  Vito says people do it with additional position sensors and I have see photos, but that makes my palms sweaty.

Cheers and Happy Holidays.


Re: Ascom version vs APCC betas

Ray Gralak
 

Hi Linwood,

It is okay to update the AP V2 driver v5.40.01, but it is not needed for the APCC beta's. This version of the driver and APCC Pro 1.9.3.1 are "unreleased releases". The last step before releasing them will be to update their help files, which I will be doing over the next few days.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of ap@...
Sent: Wednesday, December 22, 2021 2:28 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] Ascom version vs APCC betas

Ray, in another topic you mentioned:

AP V2 driver 5.40.01:
https://www.gralak.com/apdriver/AstroPhysics_V2_Setup_5.40.01.exe

APCC Pro 1.9.3.1
https://www.apastrosoftware.com/apcc_download/APCC_Pro_Setup_1.9.3.1.exe


I am running the latest APCC because I am using and testing the newer features with NINA. I have 5.30.10 of
the ASCOM driver. Is the beta needed to match for any reason, or was it for unrelated things (in which case I
may be better just waiting).

Everything appears to be working just fine; just worried by the juxtaposition in the comment.

Linwood


Ascom version vs APCC betas

ap@CaptivePhotons.com
 

Ray, in another topic you mentioned: 

AP V2 driver 5.40.01:
https://www.gralak.com/apdriver/AstroPhysics_V2_Setup_5.40.01.exe

APCC Pro 1.9.3.1
https://www.apastrosoftware.com/apcc_download/APCC_Pro_Setup_1.9.3.1.exe


I am running the latest APCC because I am using and testing the newer features with NINA.  I have 5.30.10 of the ASCOM driver.  Is the beta needed to match for any reason, or was it for unrelated things (in which case I may be better just waiting). 

Everything appears to be working just fine; just worried by the juxtaposition in the comment. 

Linwood


moderated Re: Improved lunar tracking speed ?

thefamily90 Phillips
 

Can’t seem to upload an image right now. I’ll work on it.

Jim P


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of thefamily90 Phillips <thefamily90@...>
Sent: Wednesday, December 22, 2021 4:57:42 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?
 
Not sure why any lunar imager would need perfect tracking of the Moon. Everyone I know suit images the moon and planets takes an AVI and then uses software to pick out the best frames then stack them and once stacked processed in various software programs. When stacking, an X can be placed on a particular crater and the software stacking the images will stack them perfectly on that crater. Again, there is no need for perfect tracking when imaging the lunar surface (or a planet’s surface)
Here are a couple of images with a 10 inch triplet refractor and the image moved all over the screen while tracking. None of my scopes are perfectly aligned especially when you consider what Astro photographers scopes have to be. You just keep the image on the laptop screen and that’s all you need to do. 

JimP 







From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Roland Christen via groups.io <chris1011@...>
Sent: Wednesday, December 22, 2021 4:13:00 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?
 
All the AP mounts have the capability of tracking non-stellar objects, including the Moon. If the ephemeris is known then APCC Horizons can track it. I will let ray comment on this since he is infinitely more knowledgeable on that subject.

Rolando

-----Original Message-----
From: christian viladrich <c.viladrich@...>
To: main@ap-gto.groups.io
Sent: Wed, Dec 22, 2021 1:25 pm
Subject: [ap-gto] Improved lunar tracking speed ?

Hello AP users,
The apparent motion of the Moon with respect to the stars is usually approximated by 0.5 arsec/s. However this is an approximation and the true value changes from day to day (see delta alpha x cos delta (arsec/min) column in the table below).
This approximation is a real pain when doing high resolution images of the Moon with 14" telescopes or larger.
By high resolution, I mean this kind of picture :
This one was taken with a 500 mm RC telescope on an AP1600 GTOCP4 mount. Smallest visible craters are in the range of 350 m. Because the lunar tracking speed is approximated, we have to constantly play with the alpha slow motion to recenter the field imaged. This would be a huge improvement if we could have a tracking speed based on lunar ephemerid.
Would it be possible thanks to the increased power of the processors embedded in the GTOCP 4 or CP 5 ?
I admit this is a very specialized demand, very far from the classic use of equatorial mounts.
Best regards
Christian Viladrich
GTOCP4 or GTOCP5

--
Roland Christen
Astro-Physics


Re: Transporting Counter-Weights and Shaft

Christopher M
 

I second the high density foam.  I usually get mine from a local foam supply shop and it isn't that much for a portion of a sheet, especially if they're off-cuts.  Cheaper it to scrounge from work when equipment comes in as the HD foam is often used to pack, but that is more hit and miss.  I've cut is myself with long bladed sharp knives, or with a bandsaw.  Not as pretty as the laser cut stuff from the pros, but cheap and effective.
And I transport my weights on the floor mat in the back seat - it keeps them low and from rolling around mostly.  No problems yet on hard stops but I haven't tried, and don't intend to, a sudden stop.
PE foam seems to be available in lightweight 1.2# density up to pretty rigid 9# density.  I think I've used 4# and 6#


Re: Comet tracking for photography with a non encoder GTO1100

Michael 'Mikey' Mangieri
 

You can also use Horizons within APCC Pro. 


On Dec 22, 2021, at 4:51 PM, Nick Iversen <inoddy@...> wrote:

You can use PHD2 to do comet guiding. Use Cartes du Ceil to send the tracking correction to PHD2. You can Google for full instructions but it's actually quite easy.


moderated Re: Improved lunar tracking speed ?

thefamily90 Phillips
 

Not sure why any lunar imager would need perfect tracking of the Moon. Everyone I know suit images the moon and planets takes an AVI and then uses software to pick out the best frames then stack them and once stacked processed in various software programs. When stacking, an X can be placed on a particular crater and the software stacking the images will stack them perfectly on that crater. Again, there is no need for perfect tracking when imaging the lunar surface (or a planet’s surface)
Here are a couple of images with a 10 inch triplet refractor and the image moved all over the screen while tracking. None of my scopes are perfectly aligned especially when you consider what Astro photographers scopes have to be. You just keep the image on the laptop screen and that’s all you need to do. 

JimP 







From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Roland Christen via groups.io <chris1011@...>
Sent: Wednesday, December 22, 2021 4:13:00 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Improved lunar tracking speed ?
 
All the AP mounts have the capability of tracking non-stellar objects, including the Moon. If the ephemeris is known then APCC Horizons can track it. I will let ray comment on this since he is infinitely more knowledgeable on that subject.

Rolando

-----Original Message-----
From: christian viladrich <c.viladrich@...>
To: main@ap-gto.groups.io
Sent: Wed, Dec 22, 2021 1:25 pm
Subject: [ap-gto] Improved lunar tracking speed ?

Hello AP users,
The apparent motion of the Moon with respect to the stars is usually approximated by 0.5 arsec/s. However this is an approximation and the true value changes from day to day (see delta alpha x cos delta (arsec/min) column in the table below).
This approximation is a real pain when doing high resolution images of the Moon with 14" telescopes or larger.
By high resolution, I mean this kind of picture :
This one was taken with a 500 mm RC telescope on an AP1600 GTOCP4 mount. Smallest visible craters are in the range of 350 m. Because the lunar tracking speed is approximated, we have to constantly play with the alpha slow motion to recenter the field imaged. This would be a huge improvement if we could have a tracking speed based on lunar ephemerid.
Would it be possible thanks to the increased power of the processors embedded in the GTOCP 4 or CP 5 ?
I admit this is a very specialized demand, very far from the classic use of equatorial mounts.
Best regards
Christian Viladrich
GTOCP4 or GTOCP5

--
Roland Christen
Astro-Physics

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