Date   

Re: APCC - APPM - and ASTAP

Jack Huerkamp
 

I received this from Han, the author of ASTAP after sending him one of my PNG images and the astrometry.net solve of it:

Hello Jack,

It solves see attached screenshot settings.

Enter an estimate position ( ra=1.5, dec 30)  in the viewer or double click on RA and enter M33.

field of view (height) is 0.42 degrees or put this on auto

Use H18 star database since your field of view is small.

un-check calibration.

Note you can go fully blind by entering the search range of 180 degrees. You could also set FOV on auto but that takes time so better enter 0.42degrees for your system.

Clear skies, Han"

I tested ATPAS with several images this morning and it did solve them if I put in a rough RA and Dec position.  I assume that will not be an issue while running APPM as the mount's position will be indicated in APCC and I could feed the position into ASTAP for the purpose of plate solving.

I hope my logic is accurate as I hope to try an APPM run as soon as the skies clear.

Yours truly,

Jack Huerkamp


Re: Keypad : some buttons not responding too well

George
 

Mike,

 

Contact me re: Keypad button issues.

 

Regards,

 

George

 

George Whitney

Astro-Physics, Inc.

Phone:  815-222-6538 (direct line)

Phone:  815-282-1513 (office)

Email:  george@...

 


Re: RA Mesh adjustment for 2104 model Mach 1 GTO

Roland Christen
 

Hello Nicholas,

I think in your case the first order of business to get your mount up to snuff is to take a 15 to 20 minute run in PHD2 and get a screen shot of the guider graph. Use 2 second exposures on the guide star. You want to turn off the guide corrections and just let the mount track and record the tracking graph for RA and Dec. Make sure that you have turned off PEM for this initial test because we want to see what your mount baseline tracking is. The Dec portion of the graph will let use determine what portion of the tracking noise is atmospheric (seeing) induced.

One very easy way to do this is to use the Guiding Assistant in PHD2. Set it to run for at least 15 to 20 minutes so that you capture 2 to 3 worm cycles. You want to point your scope to roughly 0 Declination near the meridian (either side is fine). Once you get this unguided tracking graph, I can determine the health of the RA axis and the basic mount and maybe suggest some things you might try to make the mount perform better.

For the Dec axis, the best way to determine the health of that axis would be to run the backlash test and post the graph. For now, do not make any adjustments to the mount until we can see these baseline data points.

Can you do these test for me so I can help you get the most out of your new-to-you mount?

Roland Christen
Astro-Physics Inc.


-----Original Message-----
From: nicholas via groups.io <chironik@...>
To: main@ap-gto.groups.io
Sent: Sat, Oct 2, 2021 10:03 pm
Subject: [ap-gto] RA Mesh adjustment for 2104 model Mach 1 GTO

I would like to know from other owners of AP mounts if you are fully loaded and you grip the counter shaft and use a small amount though distinctive force through the DEC axis will you  notice any discernable movement of the RA structure? I do, when it is fully loaded. It is a small a amount, maybe 1/8 MM or less. but that movement is discernable. 
 

Thank you!

--
Roland Christen
Astro-Physics


Re: Mach 2 Meshing

Roland Christen
 

The worm assembly is on a pivot and uses springs to gently push it into mesh. The backstop is set to allow only a few thou of in-out movement which is enough to keep the worm always in mesh. The worm wheel is precision machined with extremely low eccentricity.

Rolando

-----Original Message-----
From: Bill Long <bill@...>
To: AP-GTO Groups. io <ap-gto@groups.io>
Sent: Sat, Oct 2, 2021 9:24 pm
Subject: [ap-gto] Mach 2 Meshing

I am curious, how does the Mach 2 maintain its gear meshing on its own?

--
Roland Christen
Astro-Physics


Re: Rookie Question

ap@CaptivePhotons.com
 

Jeffc wrote:

 

A proper bracket would be nice.

 

First, I agree, and love Joel’s work.

 

I did a bit of research and want to correct an impression prior photos may have left if we are talking about going under the saddle. Be aware of the dimensions.  Mine was a PPBadv, which the web site specs at 25mm; the ultimate is 30mm. 


I also realized the photo I sent earlier was incorrect – the gears were disengaged, which left the motor housing lower.  This is the spacing with the mesh engaged at closest approach:

 

 

That’s probably less than a millimeter, and I realized I actually risked a crunch there without realizing it, though it does clear.  But if you go beneath, the natural approach is swinging it with the mesh disengaged – be aware of the height difference.  Or disengage the clutches instead to check clearance.

 

Above (i.e. bottom of the PPBadv) there is more clearance, about 3mm (eyeball estimate) where the bracket holds it off.  This is not adjustable with the holes in it now. A bracket with no hold-off could save that space, but on the 1100 if the 30 vs 25mm height is right, there is NOT clearance for the Ultimate in this location even flush on the saddle.  On the front yes, since the DEC motor housing and saddle clearance do not change with rotation (well, unless you rotate DEC anywhere near 180 degrees of course then it may hit the RA housing).

 

Anyway, if you are looking at the saddle, do swing both axes in all the positions you  plan to use as there is not much room under.  Just barely enough for what I did.  And if someone makes a bracket to go above or below the unit, even the PPBadv is not going to fit on the back side.  Well, unless you stick it way in the back beyond the motor housing on the tip of the saddle.

 

 


Re: Rookie Question

Jeffc
 




On Oct 1, 2021, at 8:33 PM, Derek S <derek.st@...> wrote:

A proper bracket would be nice.
_

Fwiw Pegasus does sell a way overpriced bracket at least for the UPBV2 which fits no hole pattern I have on my plates.   I was suspicious and should have stayed away from that unnecessary expense… definitely not a get-what-you-pay-for situation.  It is possible Pegasus supplies brackets for the other models perhaps with better fit to typical plates. 

As for a “proper bracket”… The buckeystargazer mounting plate is an exact perfect fit (am using the UPBV2 here) with optional choice of dovetail mounting.

I liked it so much, I bought another for my SI-EFS control box.    

Maybe you are looking for some sort of machined aluminum bracket.   Fwiw such a bracket is likely going to add some weight to the OTA (whether top of bottom mounted).  I have a couple losmandy “dovetail adapters” that I used for mounting things like the old dewbuster on top of the OTA  … The DA was very heavy and clunky.  

The lightweight plastic seems to be more than robust enough , and it fits the dovetail without the usual aluminum-on-aluminum grinding.   Best of all it is very lightweight adding almost zero weight… certainly nothing noticeable like the old DAs. 



Keypad : some buttons not responding too well

michael mccann
 

Hi
Let me know if there are things that I can do to better resolve this, troubleshooting or answering questions. Let me describe
The “Next”, “5”, “0” buttons are “slow” or don’t respond unless I press several times. So far these buttons seem problem childs.
Is this normal wear and tear sort of issue? Is there a replacement keypad part that I can purchase and install ? Does AP repair this sort of thing? I bought the mount and keypad used so I’m seeing how the previous owner used it.

Cheers

Mike


Re: Hello All and pardon the newbie questions.....

Sébastien Doré
 

Michael,
Thanks for the help  Sebastien!  
Of course!
 I see your gear came with a matching dog!!  Outstanding!!
Yep, and as the mount it can be operated down to extremely low temperature ! Moreover, it is a perfect cold feet heater too! Just very bad for the PA when he mixes yours with the tripod's ! 😆

Sébastien


Re: Smart Meridian Flip with NINA #APCC

Joseph Beyer
 

I didn’t know that. That makes it all the easier for everyone. The improvements in the entire mount software package over the past four years have been amazing. Glad I was able to bring that part to your attention.

Thanks again, Joe

On Oct 3, 2021, at 3:04 PM, Ray Gralak <iogroups@siriusimaging.com> wrote:



There may have been no problem with 3 and 4. I have been designating the higher numbers based on the
APCC manual where they’re recommended.
We will have to update that part of the manual. It has been obsoleted since APCC can dynamically configure the ASCOM driver. There is no need to use higher port numbers.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Joseph Beyer
Sent: Sunday, October 3, 2021 2:41 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Smart Meridian Flip with NINA #APCC

There may have been no problem with 3 and 4. I have been designating the higher numbers based on the
APCC manual where they’re recommended.

On Oct 3, 2021, at 2:34 PM, Ray Gralak <iogroups@siriusimaging.com> wrote:
Joe,

Thanks for the tip on auto-configuration of port selection, I've got it checked. I think I need to remember
to
power cycle the mount when I'm working on connections, correct? I'll admit the assignment of ports and
port
selection is a black box for me.
Just restarting APCC is all that is required. You do not need to power cycle the mount.

I loaded a backup profile from last week and initially it wouldn't connect. I refreshed the ports, it
connected
but for some reason ports 3 and 4 were selected. Power cycled the mount and the restarted the computer
and ports 20, 21 were selected.
What was wrong with ports 3 and 4? Any COM port not in use is eligible to be used as a virtual COM port.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Joseph Beyer
Sent: Sunday, October 3, 2021 1:00 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Smart Meridian Flip with NINA #APCC

Ray,

Thanks for the tip on auto-configuration of port selection, I've got it checked. I think I need to remember
to
power cycle the mount when I'm working on connections, correct? I'll admit the assignment of ports and
port
selection is a black box for me.

I loaded a backup profile from last week and initially it wouldn't connect. I refreshed the ports, it
connected
but for some reason ports 3 and 4 were selected. Power cycled the mount and the restarted the computer
and ports 20, 21 were selected. Now the mount seems to work fine with APCC, connects to CdC and able
to
point and slew to stars, and connected to NINA and am able to slew from that program as well. Seems I'm
back in business.

There shouldn't be any conflicts on my network. There is a single ethernet cable from the computer to the
CP4 although it's connected to the computer through a USB-C adapter. The computer doesn't have a
dedicated ethernet port. I turned off pointing correction for now unless I create a larger all-sky model then
I'll
watch the values that are presented.

Thanks for the help. It doesn't sound like there were any tells as to what happened. I'll keep my fingers
crossed that everything else clicks into place.

Joe











Re: Smart Meridian Flip with NINA #APCC

Ray Gralak
 

There may have been no problem with 3 and 4. I have been designating the higher numbers based on the
APCC manual where they’re recommended.
We will have to update that part of the manual. It has been obsoleted since APCC can dynamically configure the ASCOM driver. There is no need to use higher port numbers.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Joseph Beyer
Sent: Sunday, October 3, 2021 2:41 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Smart Meridian Flip with NINA #APCC

There may have been no problem with 3 and 4. I have been designating the higher numbers based on the
APCC manual where they’re recommended.

On Oct 3, 2021, at 2:34 PM, Ray Gralak <iogroups@siriusimaging.com> wrote:

Joe,

Thanks for the tip on auto-configuration of port selection, I've got it checked. I think I need to remember
to
power cycle the mount when I'm working on connections, correct? I'll admit the assignment of ports and
port
selection is a black box for me.
Just restarting APCC is all that is required. You do not need to power cycle the mount.

I loaded a backup profile from last week and initially it wouldn't connect. I refreshed the ports, it
connected
but for some reason ports 3 and 4 were selected. Power cycled the mount and the restarted the computer
and ports 20, 21 were selected.
What was wrong with ports 3 and 4? Any COM port not in use is eligible to be used as a virtual COM port.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Joseph Beyer
Sent: Sunday, October 3, 2021 1:00 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Smart Meridian Flip with NINA #APCC

Ray,

Thanks for the tip on auto-configuration of port selection, I've got it checked. I think I need to remember
to
power cycle the mount when I'm working on connections, correct? I'll admit the assignment of ports and
port
selection is a black box for me.

I loaded a backup profile from last week and initially it wouldn't connect. I refreshed the ports, it
connected
but for some reason ports 3 and 4 were selected. Power cycled the mount and the restarted the computer
and ports 20, 21 were selected. Now the mount seems to work fine with APCC, connects to CdC and able
to
point and slew to stars, and connected to NINA and am able to slew from that program as well. Seems I'm
back in business.

There shouldn't be any conflicts on my network. There is a single ethernet cable from the computer to the
CP4 although it's connected to the computer through a USB-C adapter. The computer doesn't have a
dedicated ethernet port. I turned off pointing correction for now unless I create a larger all-sky model then
I'll
watch the values that are presented.

Thanks for the help. It doesn't sound like there were any tells as to what happened. I'll keep my fingers
crossed that everything else clicks into place.

Joe






Re: Smart Meridian Flip with NINA #APCC

Joseph Beyer
 

There may have been no problem with 3 and 4. I have been designating the higher numbers based on the APCC manual where they’re recommended.

On Oct 3, 2021, at 2:34 PM, Ray Gralak <iogroups@siriusimaging.com> wrote:

Joe,

Thanks for the tip on auto-configuration of port selection, I've got it checked. I think I need to remember to
power cycle the mount when I'm working on connections, correct? I'll admit the assignment of ports and port
selection is a black box for me.
Just restarting APCC is all that is required. You do not need to power cycle the mount.

I loaded a backup profile from last week and initially it wouldn't connect. I refreshed the ports, it connected
but for some reason ports 3 and 4 were selected. Power cycled the mount and the restarted the computer
and ports 20, 21 were selected.
What was wrong with ports 3 and 4? Any COM port not in use is eligible to be used as a virtual COM port.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Joseph Beyer
Sent: Sunday, October 3, 2021 1:00 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Smart Meridian Flip with NINA #APCC

Ray,

Thanks for the tip on auto-configuration of port selection, I've got it checked. I think I need to remember to
power cycle the mount when I'm working on connections, correct? I'll admit the assignment of ports and port
selection is a black box for me.

I loaded a backup profile from last week and initially it wouldn't connect. I refreshed the ports, it connected
but for some reason ports 3 and 4 were selected. Power cycled the mount and the restarted the computer
and ports 20, 21 were selected. Now the mount seems to work fine with APCC, connects to CdC and able to
point and slew to stars, and connected to NINA and am able to slew from that program as well. Seems I'm
back in business.

There shouldn't be any conflicts on my network. There is a single ethernet cable from the computer to the
CP4 although it's connected to the computer through a USB-C adapter. The computer doesn't have a
dedicated ethernet port. I turned off pointing correction for now unless I create a larger all-sky model then I'll
watch the values that are presented.

Thanks for the help. It doesn't sound like there were any tells as to what happened. I'll keep my fingers
crossed that everything else clicks into place.

Joe





Re: Smart Meridian Flip with NINA #APCC

Ray Gralak
 

Joe,

Thanks for the tip on auto-configuration of port selection, I've got it checked. I think I need to remember to
power cycle the mount when I'm working on connections, correct? I'll admit the assignment of ports and port
selection is a black box for me.
Just restarting APCC is all that is required. You do not need to power cycle the mount.

I loaded a backup profile from last week and initially it wouldn't connect. I refreshed the ports, it connected
but for some reason ports 3 and 4 were selected. Power cycled the mount and the restarted the computer
and ports 20, 21 were selected.
What was wrong with ports 3 and 4? Any COM port not in use is eligible to be used as a virtual COM port.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Joseph Beyer
Sent: Sunday, October 3, 2021 1:00 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Smart Meridian Flip with NINA #APCC

Ray,

Thanks for the tip on auto-configuration of port selection, I've got it checked. I think I need to remember to
power cycle the mount when I'm working on connections, correct? I'll admit the assignment of ports and port
selection is a black box for me.

I loaded a backup profile from last week and initially it wouldn't connect. I refreshed the ports, it connected
but for some reason ports 3 and 4 were selected. Power cycled the mount and the restarted the computer
and ports 20, 21 were selected. Now the mount seems to work fine with APCC, connects to CdC and able to
point and slew to stars, and connected to NINA and am able to slew from that program as well. Seems I'm
back in business.

There shouldn't be any conflicts on my network. There is a single ethernet cable from the computer to the
CP4 although it's connected to the computer through a USB-C adapter. The computer doesn't have a
dedicated ethernet port. I turned off pointing correction for now unless I create a larger all-sky model then I'll
watch the values that are presented.

Thanks for the help. It doesn't sound like there were any tells as to what happened. I'll keep my fingers
crossed that everything else clicks into place.

Joe


Re: Smart Meridian Flip with NINA #APCC

Joseph Beyer
 

Ray,

Thanks for the tip on auto-configuration of port selection, I've got it checked.  I think I need to remember to power cycle the mount when I'm working on connections, correct?  I'll admit the assignment of ports and port selection is a black box for me.  

I loaded a backup profile from last week and initially it wouldn't connect.  I refreshed the ports, it connected but for some reason ports 3 and 4 were selected.  Power cycled the mount and the restarted the computer and ports 20, 21 were selected.  Now the mount seems to work fine with APCC, connects to CdC and able to point and slew to stars, and connected to NINA and am able to slew from that program as well. Seems I'm back in business.  

There shouldn't be any conflicts on my network.  There is a single ethernet cable from the computer to the CP4 although it's connected to the computer through a USB-C adapter.  The computer doesn't have a dedicated ethernet port.  I turned off pointing correction for now unless I create a larger all-sky model then I'll watch the values that are presented.

Thanks for the help.  It doesn't sound like there were any tells as to what happened.  I'll keep my fingers crossed that everything else clicks into place.

Joe 


Re: APCC - APPM - and ASTAP

Jack Huerkamp
 

Thanks.  I have printed out your settings and will check ASTAP to see what values I was using.  Hopefully once it clears and try it out on real stars.  If it works on real stars, I don’t really care if it does not work with pre-captured images I try to plate solve.

 

Yours truly,

 

Jack

 

Jack Huerkamp

Jack's Astro Accessories, LLC

38388 Pine Street

Pearl River, LA 70452-5192

985-445-5063

mallincamusa@...

www.mallincamusa.com

30.37N  89.76W

 

All of us get lost in the darkness.
Dreamers learn to steer by the stars.

………………………………….Neil Peart

 

 

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of ap@...
Sent: Sunday, October 03, 2021 1:05 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] APCC - APPM - and ASTAP

 

Jack Huerkamp wrote:

 

[tried file images]


Has anyone else been successful in using ASTAP to do plate solving while doing an APPM run?  If so, what did you have to do to get ASTAP to work for you?

There’s two halves to your question, one is about using ASTAP with APPM.  I’ve done that, using NINA as a camera, and it works great, never misses.

 

The other is using file images (e.g. as a simulator).  I tried it with survey images and never got it to work reliably.  I don’t know why – scale (scale changes?, distortion, saturation, stretched vs linear… it just didn’t work.

 

Here are the settings I used last night with NINA that worked beautifully:

 

Camera: Bin 2, duration 3s, full frame (this is an ASI6200MM Pro).  I use these settings for both 540mm on a 4” refractor and 2800mm on a C11.

 

Plate Solve: ASTAP, Max solve 10s, x and Y scale = 1.39 (more on this), scale tolerance 30%, refine = yes, last as hint = yes

 

ASTAP Plate solve settings (on plate solve tab): Number of stars 1000, radius 5, min star size 0, tolerance 0, speed default, downsample default.

 

For the scale, I switched last night from 2800mm to 540mm and forgot to change scale.  It still worked.  My guess is it somehow solved anyway, then adjusted the scale on its own as the ‘refine’ was set.  But you should set the scale (unbinned though).

 

But while it works 100% of the time, I set up and tried NINA’s simulator which uses sky survey, and despite playing around with settings, I never got it to work reliably.  No idea why, decided I didn’t care so long as it worked in real life.  I’d be curious if people do get it to work with the sky survey.

 

Note that on failure it can be set to save the failed image (Setting, Plate solved images, choose failed or all, they go in C:\Users\username\Documents\Astro-Physics\APPM), and you can try running ASTAP manually and see what it does (run it, file, load fits, when it appears hit solve).   If it is not working at all, hit the SIGMA symbol, look under Alignment at the “Star database used” and make sure it is H18.   And/or the error messages may give a hint.

 


Virus-free. www.avg.com


Re: Smart Meridian Flip with NINA #APCC

Ray Gralak
 

Joe,

 

As I suspected, there are some crazy-high values in the West model's pointing terms. The temporary solution is to turn off pointing correction, but I will make a change to APCC to ignore high-value terms like that. The problem is that there is not a large enough distribution of data points in both hour angle and declination to produce a good all-sky model. The Eastside doesn’t have the high values because the initial zenith point has a sufficiently different dec value than the arcs.

 

 

-Ray

 

> -----Original Message-----

> From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Joseph Beyer

> Sent: Sunday, October 3, 2021 10:49 AM

> To: main@ap-gto.groups.io

> Subject: Re: [ap-gto] Smart Meridian Flip with NINA #APCC

>

> Logs are posted here:

> https://drive.google.com/file/d/1SNl8HLBI4f7ZwGcxsXUghMX8pPz4ArTF/view?usp=sharing

>

> Mount: Mach1GTO/CP4

> APCC-Pro v1.9.0.11

> ASCOM V2 driver 5.30.10

> CP4 software P02-08

>

> Friday, Oct. 1:  Events started at 21:35 with a meridian flip.  Post flip the telescope was incorrectly pointing

> NNW of target (Pelican nebula).  With each successive plate solve the telescope continued to move further

> away in what seemed a NNE direction.  I stopped NINA and tried to slew back to the target with CdC which

> was followed by APCC shutting down.  After shutdown, the virtual ports changed from 20,21 to 8,9.

>

> Saturday, Oct. 2: I reset the virtual ports to 20,21 and ran the steps to reconfigure the V2 driver.  Last night I

> was out for a short period of time and tried to slew 2-3 times and APCC was disconnected and closed with

> each slew attempt.

>

> Thanks for taking a look, Joe


Re: Smart Meridian Flip with NINA #APCC

Ray Gralak
 

Joe,

 

I'll take a look at your logs today, however:

 

> Saturday, Oct. 2: I reset the virtual ports to 20,21 and ran the steps to reconfigure the V2 driver. 

 

You don't need to manually reconfigure the ASCOM driver if you enable the "Auto-config" checkbox in the AP V2 Driver groupbox as shown here in this screenshot:

 

 

-Ray

 

> -----Original Message-----

> From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Joseph Beyer

> Sent: Sunday, October 3, 2021 10:49 AM

> To: main@ap-gto.groups.io

> Subject: Re: [ap-gto] Smart Meridian Flip with NINA #APCC

>

> Logs are posted here:

> https://drive.google.com/file/d/1SNl8HLBI4f7ZwGcxsXUghMX8pPz4ArTF/view?usp=sharing

>

> Mount: Mach1GTO/CP4

> APCC-Pro v1.9.0.11

> ASCOM V2 driver 5.30.10

> CP4 software P02-08

>

> Friday, Oct. 1:  Events started at 21:35 with a meridian flip.  Post flip the telescope was incorrectly pointing

> NNW of target (Pelican nebula).  With each successive plate solve the telescope continued to move further

> away in what seemed a NNE direction.  I stopped NINA and tried to slew back to the target with CdC which

> was followed by APCC shutting down.  After shutdown, the virtual ports changed from 20,21 to 8,9.

>

> Saturday, Oct. 2: I reset the virtual ports to 20,21 and ran the steps to reconfigure the V2 driver.  Last night I

> was out for a short period of time and tried to slew 2-3 times and APCC was disconnected and closed with

> each slew attempt.

>

> Thanks for taking a look, Joe


Re: Hello All and pardon the newbie questions.....

Michael Kelly
 

Thanks for the help  Sebastien!   I see your gear came with a matching dog!!  Outstanding!!


Sent from Smallbiz Yahoo Mail for iPhone

On Friday, October 1, 2021, 2:36 PM, Seb@stro <sebastiendore1@...> wrote:

I have about 40 lbs of payload (EdgeHD 8in + SV70t + imaging gear) on my Mach2 and I use 2 x 18lbs at the very top of the shaft and 1 x 10 lbs for fine adjust about an inch below the second 18lbs (much like on Eric's photo).

I also bought a 5# in case I needed a little more versatility (and glad I did). For example, as an alternate balancing solution, while still placing both 18# at the top of the shaft, I omit the 10#, and add the 5# near the bottom. I actually find it easier to accurately achieve neutral balance this way...

Hope this helps.

Sébastien


Re: APCC - APPM - and ASTAP

ap@CaptivePhotons.com
 

Jack Huerkamp wrote:

 

[tried file images]


Has anyone else been successful in using ASTAP to do plate solving while doing an APPM run?  If so, what did you have to do to get ASTAP to work for you?


There’s two halves to your question, one is about using ASTAP with APPM.  I’ve done that, using NINA as a camera, and it works great, never misses.

 

The other is using file images (e.g. as a simulator).  I tried it with survey images and never got it to work reliably.  I don’t know why – scale (scale changes?, distortion, saturation, stretched vs linear… it just didn’t work.

 

Here are the settings I used last night with NINA that worked beautifully:

 

Camera: Bin 2, duration 3s, full frame (this is an ASI6200MM Pro).  I use these settings for both 540mm on a 4” refractor and 2800mm on a C11.

 

Plate Solve: ASTAP, Max solve 10s, x and Y scale = 1.39 (more on this), scale tolerance 30%, refine = yes, last as hint = yes

 

ASTAP Plate solve settings (on plate solve tab): Number of stars 1000, radius 5, min star size 0, tolerance 0, speed default, downsample default.

 

For the scale, I switched last night from 2800mm to 540mm and forgot to change scale.  It still worked.  My guess is it somehow solved anyway, then adjusted the scale on its own as the ‘refine’ was set.  But you should set the scale (unbinned though).

 

But while it works 100% of the time, I set up and tried NINA’s simulator which uses sky survey, and despite playing around with settings, I never got it to work reliably.  No idea why, decided I didn’t care so long as it worked in real life.  I’d be curious if people do get it to work with the sky survey.

 

Note that on failure it can be set to save the failed image (Setting, Plate solved images, choose failed or all, they go in C:\Users\username\Documents\Astro-Physics\APPM), and you can try running ASTAP manually and see what it does (run it, file, load fits, when it appears hit solve).   If it is not working at all, hit the SIGMA symbol, look under Alignment at the “Star database used” and make sure it is H18.   And/or the error messages may give a hint.

 


Re: Smart Meridian Flip with NINA #APCC

Joseph Beyer
 

Logs are posted here: https://drive.google.com/file/d/1SNl8HLBI4f7ZwGcxsXUghMX8pPz4ArTF/view?usp=sharing

Mount: Mach1GTO/CP4
APCC-Pro v1.9.0.11
ASCOM V2 driver 5.30.10
CP4 software P02-08

Friday, Oct. 1:  Events started at 21:35 with a meridian flip.  Post flip the telescope was incorrectly pointing NNW of target (Pelican nebula).  With each successive plate solve the telescope continued to move further away in what seemed a NNE direction.  I stopped NINA and tried to slew back to the target with CdC which was followed by APCC shutting down.  After shutdown, the virtual ports changed from 20,21 to 8,9.   

Saturday, Oct. 2: I reset the virtual ports to 20,21 and ran the steps to reconfigure the V2 driver.  Last night I was out for a short period of time and tried to slew 2-3 times and APCC was disconnected and closed with each slew attempt. 

Thanks for taking a look, Joe


APCC - APPM - and ASTAP

Jack Huerkamp
 

I downloaded and installed the latest version of APCC PRO on my observatory computer and also installed ASTAP and the H18 database.  Since it is raining and not predicted to clear for almost a week, I wanted to become familiar with ASTAP and its plate solving capabilities before attempting an APPM run.  I tried loading PNG images previously captured with the camera and scope I will be using to do the APPM run into ASTAP, and I consistently get "No solution found.  I then upload the image into astrometry.net and quickly get a plate solve.  I tried lowering the maximum number of stars to use.  I tried changing the Field of View height.  I tried changing the Radius search area.  Nothing I changed in ASTAP yielded a successful plate solve.

Has anyone else been successful in using ASTAP to do plate solving while doing an APPM run?  If so, what did you have to do to get ASTAP to work for you?

Yours truly,

Jack Huerkamp

2401 - 2420 of 84163