Date   

Re: IC434 first picture for my AP MACH2 and custom built corrected newton #Mach2GTO

Andrea Lucchetti
 

thank you Roland


Re: Can significant temperature changes alter the model? #APCC #Mach2GTO

Marcelo Figueroa
 

Thank you for the quick response.
 
Ray, I am using an SW Esprit 100.


Re: Meridian Flip Feature Yet?

Roland Christen
 


will the new keypad software work on GOTO CP3 V chip?
No, I'm afraid not.

Roland


-----Original Message-----
From: Don Anderson via groups.io <jockey_ca@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Sent: Sun, Dec 27, 2020 3:19 pm
Subject: Re: [ap-gto] Meridian Flip Feature Yet?

will the new keypad software work on GOTO CP3 V chip?

Don Anderson


On Sunday, December 27, 2020, 09:04:33 a.m. MST, Roland Christen via groups.io <chris1011@...> wrote:


The original keypad has only the meridian delay feature. You can move the meridian flip point either east or west so when you enter the object again and press GoTo, the mount will flip around and acquire the object in a counterweight up position. Since this requires some thinking on the operator, it becomes a bit of a problem trying to choose which way to move the meridian in order to get the mount to flip.

So, in our latest keypad software release, which was first introduced in the Mach2 and will be available shortly for all the other mounts, we have added a simple button push which automatically flips the mount and sets the meridian delay appropriately.

The main reason we never had it before is because it is way too easy to crash the scope into the pier by just pressing a flip button when the scope does not have enough clearance on the other side under the mount. So, in trying to keep your equipment safe, we made it a bit harder for you in the past and probably gave you the impression that we just didn't know how to do some things that other companies have done for a long time. We fixed that now with our latest software, so you will be able to flip the scope back and forth as needed with just one button push.

Rolando



-----Original Message-----
From: ray.palmer@...
To: main@ap-gto.groups.io
Sent: Sun, Dec 27, 2020 4:49 am
Subject: Re: [ap-gto] Meridian Flip Feature Yet?

Hi Chris, 

I appreciate your feedback, but nope, I am not new to astrophysics mounts. There are many brand mounts out there that have a meridian flip feature. You hit one or two buttons and she flips. Many mount owners, due to their observatory or environment, may only need to flip once the object they are imaging passes the meridian, and AP has developed a mount that can track for many hours past the meridian. 

I need to flip due to the angle of my dome slit, neighbors trees, observatory door, etc. On a mount as advanced as an AP, there should be a simplistic function that tells the mount the flip immediately without trying to trick it into thinking it has hit the meridian, this is quite standard on many of the mount brands you mention. It kind of blows me away that this feature has to be sold on here. If you've always had an environment where meridian flips are not required unless hours have passed since hitting the meridian, then I understand your feedback. But for those of us that need to flip the mount before even hitting the meridian, its a different world. 

--
Raymond D Palmer
Astronomer
Western Australia
www.MyAstroSpace.com
www.TheCosmicArtGallery.com

--
Roland Christen
Astro-Physics

--
Roland Christen
Astro-Physics


Re: Meridian Flip Feature Yet?

Don Anderson
 

will the new keypad software work on GOTO CP3 V chip?

Don Anderson


On Sunday, December 27, 2020, 09:04:33 a.m. MST, Roland Christen via groups.io <chris1011@...> wrote:


The original keypad has only the meridian delay feature. You can move the meridian flip point either east or west so when you enter the object again and press GoTo, the mount will flip around and acquire the object in a counterweight up position. Since this requires some thinking on the operator, it becomes a bit of a problem trying to choose which way to move the meridian in order to get the mount to flip.

So, in our latest keypad software release, which was first introduced in the Mach2 and will be available shortly for all the other mounts, we have added a simple button push which automatically flips the mount and sets the meridian delay appropriately.

The main reason we never had it before is because it is way too easy to crash the scope into the pier by just pressing a flip button when the scope does not have enough clearance on the other side under the mount. So, in trying to keep your equipment safe, we made it a bit harder for you in the past and probably gave you the impression that we just didn't know how to do some things that other companies have done for a long time. We fixed that now with our latest software, so you will be able to flip the scope back and forth as needed with just one button push.

Rolando



-----Original Message-----
From: ray.palmer@...
To: main@ap-gto.groups.io
Sent: Sun, Dec 27, 2020 4:49 am
Subject: Re: [ap-gto] Meridian Flip Feature Yet?

Hi Chris, 

I appreciate your feedback, but nope, I am not new to astrophysics mounts. There are many brand mounts out there that have a meridian flip feature. You hit one or two buttons and she flips. Many mount owners, due to their observatory or environment, may only need to flip once the object they are imaging passes the meridian, and AP has developed a mount that can track for many hours past the meridian. 

I need to flip due to the angle of my dome slit, neighbors trees, observatory door, etc. On a mount as advanced as an AP, there should be a simplistic function that tells the mount the flip immediately without trying to trick it into thinking it has hit the meridian, this is quite standard on many of the mount brands you mention. It kind of blows me away that this feature has to be sold on here. If you've always had an environment where meridian flips are not required unless hours have passed since hitting the meridian, then I understand your feedback. But for those of us that need to flip the mount before even hitting the meridian, its a different world. 

--
Raymond D Palmer
Astronomer
Western Australia
www.MyAstroSpace.com
www.TheCosmicArtGallery.com

--
Roland Christen
Astro-Physics


Re: Can significant temperature changes alter the model? #APCC #Mach2GTO

Ray Gralak
 

Hi Marcelo,

It's summer here in the Southern Hemisphere and I'm learning how the modeling works in my Mach2. Two nights ago
the temperature at night was high, around 20ºC and in almost all the frames of that night my stars were elongated,
when the night before they were perfect. Then yesterday the temperature was 16ºC and the stars were perfectly round
again.
Yes, the temperature can affect both the refraction calculation and the Young modulus (flexure) of an instrument. APCC does account for refraction, but since flexure can also change with temperature, the model can change slightly.

A future version of APCC will be able to use APPM data collected over an arbitrary number of nights with a goal to predict flexure changes in a setup based on temperature.

So, as the temperature changes, you might consider doing new mapping runs to collect data points for that future version of APCC.

BTW, what type of telescope are you using?

-Ray Gralak
Author of PEMPro
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Marcelo Figueroa via groups.io
Sent: Sunday, December 27, 2020 12:13 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] Can significant temperature changes alter the model? #APCC #Mach2GTO


It's summer here in the Southern Hemisphere and I'm learning how the modeling works in my Mach2. Two nights ago
the temperature at night was high, around 20ºC and in almost all the frames of that night my stars were elongated,
when the night before they were perfect. Then yesterday the temperature was 16ºC and the stars were perfectly round
again.

My installation is semi-permanent, without any recent changes. I am using 4 minute unguided narrowband exposures
and use a Pegasus Pocket Powerbox Advance to get the temperature.

Thanks


Re: IC434 first picture for my AP MACH2 and custom built corrected newton #Mach2GTO

Don Anderson
 

Beautiful image Andrea! 

Don Anderson


On Sunday, December 27, 2020, 08:21:24 a.m. MST, Andrea Lucchetti <andlucchett@...> wrote:


Hi,
I am happy to share my first picture with the mount.
I hope it is not off topic, but please tell me.
After years running an observatory I came back to a nomad set up and I have chosen the MACH2.
The mount is perfect for my set up at 24 kg all included.

It is a Newton corrected and illuminated over a KAF 16803.

At the following link my first image , hope you like it.
https://andrealucchetti.smugmug.com/Astrophotography/Nebulae/i-HDpZ2mD

Attached my set up.

Andrea


Re: Can significant temperature changes alter the model? #APCC #Mach2GTO

Roland Christen
 

Yes, temperature has a large effect on the modeling. Ray can comment on that, but I have seen this many times myself.

Rolando



-----Original Message-----
From: Marcelo Figueroa via groups.io <marfig1970@...>
To: main@ap-gto.groups.io
Sent: Sun, Dec 27, 2020 2:12 pm
Subject: [ap-gto] Can significant temperature changes alter the model? #APCC #Mach2GTO


It's summer here in the Southern Hemisphere and I'm learning how the modeling works in my Mach2. Two nights ago the temperature at night was high, around 20ºC and in almost all the frames of that night my stars were elongated, when the night before they were perfect. Then yesterday the temperature was 16ºC and the stars were perfectly round again.
 
My installation is semi-permanent, without any recent changes. I am using 4 minute unguided narrowband exposures and use a Pegasus Pocket Powerbox Advance to get the temperature.
 
Thanks

--
Roland Christen
Astro-Physics


Can significant temperature changes alter the model? #APCC #Mach2GTO

Marcelo Figueroa
 


It's summer here in the Southern Hemisphere and I'm learning how the modeling works in my Mach2. Two nights ago the temperature at night was high, around 20ºC and in almost all the frames of that night my stars were elongated, when the night before they were perfect. Then yesterday the temperature was 16ºC and the stars were perfectly round again.
 
My installation is semi-permanent, without any recent changes. I am using 4 minute unguided narrowband exposures and use a Pegasus Pocket Powerbox Advance to get the temperature.
 
Thanks


Re: Precise polar alignment of the azimuth axis

John
 

Aloha Steven and Deonb,

  Yes, I have been using the Sharpcap polar align tool and really like it.  And I understand what all is going on now with the az and alt (ie 2 star)
drift alignment.  I'm going to try the PHD2 drift align next and then try another drift align with just a camera (no other software).  And then compare
these various techniques (as what Deonb is doing)...

  I'm kind of curious to see how PHD2 and SharpCap compare (as to what each one is reporting in the way of polar align error).  And then try Roland's method.
I'm sure either method is fine, especially if a little modeling is thrown in afterwards.  Just curious at trying a few different techniques more than anything else.  And I
still need to look into that SharpCap cone error business!

  I was able to get 8 mins unguided exposures the other night in the Pleiades region and ran out of time to try 10 mins.  I did get 10 mins on either Deneb or Sadr,
(on a different night) but you could tell some oblong stars were creeping in to the mix.  One 12 min exposure showed definite oblong stars.  But all without modeling!

    John


Re: Mount RA/DEC slew math

Roland Christen
 

Is there an atmospheric refraction calculation happening? If so, then the difference would be about +- 1/2 degree from one side to the other.

Rolando



-----Original Message-----
From: deonb <deonb@...>
To: main@ap-gto.groups.io
Sent: Sun, Dec 27, 2020 10:21 am
Subject: Re: [ap-gto] Mount RA/DEC slew math

The RA axis actually visually move. Not by a lot, but much more than can be explained by sidereal.

I don't rely on the camera for anything yet since I can't rationalize the mount movement yet.

I've just looked up the RA/DEC coordinates as the mount report it when it's at those 2 Alt/Az points:
Alt 0, Az 90 translates to RA: 20:25:25 Dec: 0
Alt 0, Az 270 translates to RA: 8:25:25 (+ sidereal) Dec: 0

So delta the meridian flip, that's the same RA plane - at least I'm not completely going crazy. But it doesn't seem to travel on that plane from point A to point B when it's slewing...

This is not technically an issue for me, since I want to move the mount by hand anyway. The issue is that I don't understand why it's doing this during an automated slew, so I don't know if my tests are valid.

--
Roland Christen
Astro-Physics


Re: Mount RA/DEC slew math

deonb
 

The RA axis actually visually move. Not by a lot, but much more than can be explained by sidereal.

I don't rely on the camera for anything yet since I can't rationalize the mount movement yet.

I've just looked up the RA/DEC coordinates as the mount report it when it's at those 2 Alt/Az points:
Alt 0, Az 90 translates to RA: 20:25:25 Dec: 0
Alt 0, Az 270 translates to RA: 8:25:25 (+ sidereal) Dec: 0

So delta the meridian flip, that's the same RA plane - at least I'm not completely going crazy. But it doesn't seem to travel on that plane from point A to point B when it's slewing...

This is not technically an issue for me, since I want to move the mount by hand anyway. The issue is that I don't understand why it's doing this during an automated slew, so I don't know if my tests are valid.


Re: IC434 first picture for my AP MACH2 and custom built corrected newton #Mach2GTO

Roland Christen
 

Great looking setup and exquisite detail in the image.

Rolando



-----Original Message-----
From: Andrea Lucchetti <andlucchett@...>
To: main@ap-gto.groups.io
Sent: Sun, Dec 27, 2020 9:21 am
Subject: [ap-gto] IC434 first picture for my AP MACH2 and custom built corrected newton #Mach2GTO

Hi,
I am happy to share my first picture with the mount.
I hope it is not off topic, but please tell me.
After years running an observatory I came back to a nomad set up and I have chosen the MACH2.
The mount is perfect for my set up at 24 kg all included.

It is a Newton corrected and illuminated over a KAF 16803.

At the following link my first image , hope you like it.
https://andrealucchetti.smugmug.com/Astrophotography/Nebulae/i-HDpZ2mD

Attached my set up.

Andrea

--
Roland Christen
Astro-Physics


Re: Meridian Flip Feature Yet?

Roland Christen
 

The original keypad has only the meridian delay feature. You can move the meridian flip point either east or west so when you enter the object again and press GoTo, the mount will flip around and acquire the object in a counterweight up position. Since this requires some thinking on the operator, it becomes a bit of a problem trying to choose which way to move the meridian in order to get the mount to flip.

So, in our latest keypad software release, which was first introduced in the Mach2 and will be available shortly for all the other mounts, we have added a simple button push which automatically flips the mount and sets the meridian delay appropriately.

The main reason we never had it before is because it is way too easy to crash the scope into the pier by just pressing a flip button when the scope does not have enough clearance on the other side under the mount. So, in trying to keep your equipment safe, we made it a bit harder for you in the past and probably gave you the impression that we just didn't know how to do some things that other companies have done for a long time. We fixed that now with our latest software, so you will be able to flip the scope back and forth as needed with just one button push.

Rolando



-----Original Message-----
From: ray.palmer@...
To: main@ap-gto.groups.io
Sent: Sun, Dec 27, 2020 4:49 am
Subject: Re: [ap-gto] Meridian Flip Feature Yet?

Hi Chris, 

I appreciate your feedback, but nope, I am not new to astrophysics mounts. There are many brand mounts out there that have a meridian flip feature. You hit one or two buttons and she flips. Many mount owners, due to their observatory or environment, may only need to flip once the object they are imaging passes the meridian, and AP has developed a mount that can track for many hours past the meridian. 

I need to flip due to the angle of my dome slit, neighbors trees, observatory door, etc. On a mount as advanced as an AP, there should be a simplistic function that tells the mount the flip immediately without trying to trick it into thinking it has hit the meridian, this is quite standard on many of the mount brands you mention. It kind of blows me away that this feature has to be sold on here. If you've always had an environment where meridian flips are not required unless hours have passed since hitting the meridian, then I understand your feedback. But for those of us that need to flip the mount before even hitting the meridian, its a different world. 

--
Raymond D Palmer
Astronomer
Western Australia
www.MyAstroSpace.com
www.TheCosmicArtGallery.com

--
Roland Christen
Astro-Physics


APCC and european date and time format #APCC

lacour.morten
 

This weekend, I updated to the latest APCC version.
when using Maxim DL6.26, and an updated Win10.
I live in denmark (EU), and have learned early on (around 2014ish, I think) that in order to make APCC work properly I need to have the PC set to US number, time, and date format.
For some reason a recent Win update did reset the number, time and date format to my standard area settings (Danish, German etc.). This happens quite often.
Without noticing this, I did a platesolve corrected slew, and got an error message. Once I returned the PC back to US formats everything worked fine.
This is not a big deal, I just have to check the observatory computers assigned to my AP mounts, and ensure that they run US formats. 
Some of you living outside the US might benefit from this info, which is hereby shared.
Clear skies
Morten


Re: Meridian Flip Feature Yet?

Roland Christen
 

If you have the original keypad software then yes, the meridian flip feature is accessed by pressing button 9.
I was under the impression that you had the latest software, which places it under the +- button.

Rolando



-----Original Message-----
From: ray.palmer@...
To: main@ap-gto.groups.io
Sent: Sat, Dec 26, 2020 11:39 pm
Subject: Re: [ap-gto] Meridian Flip Feature Yet?

Hi Rolando, 

When I press the +- button, I get a menu that controls guiding speed and slewing speed, but pressing 9 does nothing. However when I press the bottom right corner button (RA / DEC / Rev), I do get a message on the screen that says 0W. Would that be the Meridian flip feature?
--
Raymond D Palmer
Astronomer
Western Australia
www.MyAstroSpace.com
www.TheCosmicArtGallery.com

--
Roland Christen
Astro-Physics


Re: Mount RA/DEC slew math

Ray Gralak
 

Why is that? Isn't Alt:0 Az:90 and Alt:0, Az:270 on the same RA plane?
Does the RA axis actually move, or are you relying on where the camera is aiming to detect RA movement? If it is the latter and the camera is not orthogonal, then a 180-degree flip will not be exactly 180 degrees offset from its starting point.

-Ray Gralak
Author of PEMPro
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of deonb
Sent: Saturday, December 26, 2020 11:39 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] Mount RA/DEC slew math

I'm trying to correct my pier's N/S and E/W positions in my dome, so I stuck a camera in the middle of my scope's lens
cap and ran a tape marker down the length of the dome shutter. I'm then trying to align one axis at a time.

I thought that if I slew from Alt:0 Az:90 to Alt:0, Az:270, the mount will only slew DEC without moving RA. And if the
dome alignment is correct, it should move in a curved track around the dome and come to land in the middle of the
shutter tape on the other side.

That's the theory... In practice what happens is that the RA axis also moves during this slew. Not a lot, but enough to
make my doubt my hypothesis.

Why is that? Isn't Alt:0 Az:90 and Alt:0, Az:270 on the same RA plane?


IC434 first picture for my AP MACH2 and custom built corrected newton #Mach2GTO

Andrea Lucchetti
 

Hi,
I am happy to share my first picture with the mount.
I hope it is not off topic, but please tell me.
After years running an observatory I came back to a nomad set up and I have chosen the MACH2.
The mount is perfect for my set up at 24 kg all included.

It is a Newton corrected and illuminated over a KAF 16803.

At the following link my first image , hope you like it.
https://andrealucchetti.smugmug.com/Astrophotography/Nebulae/i-HDpZ2mD

Attached my set up.

Andrea


Re: Initial GoTo In APCC Pro Cause Nose or Tail Dive

Ray Gralak
 

Hi John,

I just wanted to follow up with you on this issue. Did turning off pointing and tracking rate correction fix the issue?

I am guessing the data for the pointing model you are using may have been gathered with a "bad" version of the ASCOM platform. Specifically, the initial release of the ASCOM 6.5 platform had a severe bug that caused every J2000 to local apparent epoch transformation to have the same RA/Dec. This bug essentially rendered the pointing model useless.

-Ray Gralak
Author of PEMPro
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of John
Sent: Saturday, December 26, 2020 3:55 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Initial GoTo In APCC Pro Cause Nose or Tail Dive

Aloha Ray,

I just sent you the screen shots via email.

Once I slew more than 10 degrees (in either direction), stop the slew, the DEC reads 00 00 00. While slewing and
holding down the left
mouse button, I can see the DEC coordinates actually slewing/changing. But after stopping the slew, the DEC
coordinates revert to 00 00 00
Kind of strange...

After pressing the 'find home' button, the DEC displays the coordinates correctly (after the slew stops) and like what
you're seeing in your screen shot
Hope the screen shots help, thanks!

John



Re: Interesting Mach2 Behavior on Cloudy Nights

Ray Gralak
 

Not sure whether or not I should post the resolution back here, but Roland was able to help me out, and it works great
now without any oscillation.
That's great to hear!

BTW, it would be nice to also post on CN that the issue has been resolved.

-Ray Gralak
Author of PEMPro
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of deonb
Sent: Sunday, December 27, 2020 2:29 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Interesting Mach2 Behavior on Cloudy Nights

Not sure whether or not I should post the resolution back here, but Roland was able to help me out, and it works great
now without any oscillation.


Re: Meridian Flip Feature Yet?

Ray Gralak
 

Hi Ray,

I need to flip due to the angle of my dome slit, neighbors trees, observatory door, etc. On a mount as advanced as an
AP, there should be a simplistic function that tells the mount the flip immediately without trying to trick it into thinking it
has hit the meridian, this is quite standard on many of the mount brands you mention. It kind of blows me away that
this feature has to be sold on here. If you've always had an environment where meridian flips are not required unless
hours have passed since hitting the meridian, then I understand your feedback. But for those of us that need to flip the
mount before even hitting the meridian, its a different world.
It is easy to automate the flip point. You can do this using the AP V2 ASCOM driver (or the hand controller). You can configure the flip-point so that the mount will flip at the necessary hour angle with a slew to the same RA/Dec.

APCC's meridian limits feature goes much further. It allows you to define different flip points for each declination and pier-side. In operation, this allows worry-free pier flipping and tracking limits to prevent pier collisions without any human intervention. I don't think any of the other mounts you mention have that feature.

-Ray Gralak
Author of PEMPro
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver


-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of ray.palmer@thecosmicartgallery.com
Sent: Sunday, December 27, 2020 2:50 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Meridian Flip Feature Yet?

Hi Chris,

I appreciate your feedback, but nope, I am not new to astrophysics mounts. There are many brand mounts out there
that have a meridian flip feature. You hit one or two buttons and she flips. Many mount owners, due to their
observatory or environment, may only need to flip once the object they are imaging passes the meridian, and AP has
developed a mount that can track for many hours past the meridian.

I need to flip due to the angle of my dome slit, neighbors trees, observatory door, etc. On a mount as advanced as an
AP, there should be a simplistic function that tells the mount the flip immediately without trying to trick it into thinking it
has hit the meridian, this is quite standard on many of the mount brands you mention. It kind of blows me away that
this feature has to be sold on here. If you've always had an environment where meridian flips are not required unless
hours have passed since hitting the meridian, then I understand your feedback. But for those of us that need to flip the
mount before even hitting the meridian, its a different world.

--
Raymond D Palmer
Astronomer
Western Australia
www.MyAstroSpace.com
www.TheCosmicArtGallery.com

4541 - 4560 of 79702