Date   

Re: AP1100 park position question

Roland Christen
 

Park4 and Park5 work also.

Rolando



-----Original Message-----
From: M Hambrick <mhambrick563@...>
To: main@ap-gto.groups.io
Sent: Thu, Apr 22, 2021 8:44 am
Subject: Re: [ap-gto] AP1100 park position question

Hi Shailesh

I am joining this conversation late, but I thought you would be interested to see a picture of Roland's 175 EDF at his Hawaii observatory on a 1600 GTO mount that is stored in the Park 1 position (counterweights horizontal with the scope facing north).

My family rented their house for a vacation a couple of years ago, and he was gracious enough to allow me to use his scope to do some imaging with the specific instructions that the scope and mount absolutely had to be in the Park 1 position in order to close the roof of the observatory.

Mike

--
Roland Christen
Astro-Physics


Re: AP1100 park position question

Jack Huerkamp
 

Bryan,

 

The location in Louisville, KY is where I purchased my Linak lifting columns from.  Very pleasant to deal with.

 

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 Worsel via groups.io
Sent: Thursday, April 22, 2021 8:10 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] AP1100 park position question

 

List of Linak distributors worldwide

https://www.linak.com/organisation/subsidiaries-distributors/


Bryan


Virus-free. www.avg.com


Re: GTOCP4 Caps

ap@CaptivePhotons.com
 

> I expect that Astro-Physics' master machinist could easily fabricate whatever caps we

> might ever want, and I would happily pay for them.

As someone waiting for a mount, I’d love if I could just add a package of “covers for every opening” covers to the order, even if they are resold at a markup, it would be very convenient.

 

Linwood

 


Re: 1200GTO servicing project notes

Dale Ghent
 

I'm sorry, what are you referring to?

On Apr 22, 2021, at 10:35, fernandorivera3 via groups.io <fernandorivera3=yahoo.com@groups.io> wrote:

This particular item has more negative reviews than positive- buyer beware!!

Fernando


Re: 1200GTO servicing project notes

fernandorivera3
 

This particular item has more negative reviews than positive- buyer beware!!

Fernando


Re: bugs in my 1200!

Howard Hedlund
 

Hi Steve,

I'm going to refer this to our mount assembly wizard at the shop.  Look for a response from Dave.

Howard


Re: Strange behavior with Mach 2 and MaximDL auto pier flip #ASCOM_V2_Driver #Mach2GTO #Guiding

Howard Hedlund
 

Hi Brad,
I can't help much on the Maxim side, but regarding the AP V2 driver, I'll mention two things:
  1. I'm sure you are aware, but just in case, the pier side is displayed on the driver's window just above the direction buttons.
  2. You can verify in the log files with a search for   :pS#    (tell the search to match case).  The response is coming directly from the GTOCP5, and will be what the driver reports to all other software.


Re: APPM model how many points portable?

Ron Kramer
 

platesolve2  IS very slow.  Use  ASTAP.  Try  NINA and ASTAP combo. solves are always under 2 seconds for me. 


On Sun, Apr 18, 2021 at 8:16 PM Robert Berta <biker123@...> wrote:
I have a RAPAS on my 1100. I run lots of wires (around 6) through the mount and no issue. There is a plastic segmented "separator" that comes with the mount that allows you to run the cables through and keep them clear of the RAPAS. The reason I have so many cables is I have two interchangeable setups....one for a 6" APO refractor and another for a 11" SCT equipped with Hyperstar so one set is used for each to make it faster to switch setups without rerouting wires. I also have  wires for wireless focuser power. Of course you can also run external wires like I do on my 900 mount if you run out of room. For a permanent setup internal wiring makes it neater but for a portable mount it takes longer to run all the wires through instead of just hanging them off the mount and restraining with Velcro ties.




Re: AP1100 park position question

M Hambrick
 

Hi Shailesh

I am joining this conversation late, but I thought you would be interested to see a picture of Roland's 175 EDF at his Hawaii observatory on a 1600 GTO mount that is stored in the Park 1 position (counterweights horizontal with the scope facing north).

My family rented their house for a vacation a couple of years ago, and he was gracious enough to allow me to use his scope to do some imaging with the specific instructions that the scope and mount absolutely had to be in the Park 1 position in order to close the roof of the observatory.

Mike


Re: GTOCP4 Caps

M Hambrick
 


What a coincidence ! I also ordered some of the caps from Mouser yesterday. They must think there is a run on the Hirose connectors. I checked the Digi-Key web site that Howard provided the link to, and it said that there was zero stock of the RM15TR-C(71), and also that they were obsolete. I checked Mouser again and they had both types of caps in stock, so I ordered several of each. The last time I checked the Mouser site, they were also out of the RM15 caps, but were expecting a shipment in June. The shipment must have come in early.

Unless someone knows of another manufacturer of these caps besides Hirose, it would be a good idea to grab some up from Mouser while they still have some in stock.

I would still like to find some caps to thread onto the RA and Declination gearbox motors on the mount. I have not had much luck finding anything.
 
I expect that Astro-Physics' master machinist could easily fabricate whatever caps we might ever want, and I would happily pay for them.

Mike


Re: AP1100 park position question

Worsel
 

List of Linak distributors worldwide

https://www.linak.com/organisation/subsidiaries-distributors/


Bryan


Re: Interesting Behavior with APCC Pro and Pegasus Astro UPBv2

Fisanotti, John
 

Regards,
John Fisanotti


Re: AP1100 park position question

Christopher Erickson
 

I believe if you ask them, Linak will give you a list of their distributors.

-Christopher Erickson
Observatory engineer
Waikoloa, HI 96738
www.summitkinetics.com
   

On Wed, Apr 21, 2021, 2:34 PM Don Anderson via groups.io <jockey_ca=yahoo.ca@groups.io> wrote:
Thanks for the info Jack. I suspected as much. I checked ebay and they don't show and DL2s right now. I will have to keep my eyes open for one.

Don Anderson


On Wednesday, April 21, 2021, 07:51:02 a.m. MDT, Jack Huerkamp <mallincamusa@...> wrote:


Don,

 

When I purchased the original pair of lifting columns from Linak, I was over the engineering department of the local public works department in New Orleans and we did a lot of custom fabrications for all of our facilities.  As such, I was able to have them sell me two 1000 Newton columns and the associated controls.   Since I was already an established customer, I was able to get an upgraded set of 2500 Newton columns and associated controls last year.

 

I do not think Linak sells to the general public.

 

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 Don Anderson via groups.io
Sent: Tuesday, April 20, 2021 11:47 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] AP1100 park position question

 

Jack

Did Linak sell direct to you?

 

Don Anderson

 

 

On Tuesday, April 20, 2021, 09:36:40 p.m. MDT, Jack Huerkamp <mallincamusa@...> wrote:

 

 

Christopher,

 

The company is Linak out of Kentucky and the columns I used were the DL2 2500 Newton rated.  My original ones were rated at 1000 Newtons each when used with a non AP mount.  With the AP1600 and 150# of equipment on the dual column setup, I changed to the 2500 Newton thrust each – 5000 Newton total thrust.

 

DL2: Robust lifting column for desks, workstations and kitchens (linak-us.com)

 

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 Christopher Erickson
Sent: Tuesday, April 20, 2021 10:09 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] AP1100 park position question

 

Lymax columns. A lot cheaper to buy Lymax off of Ebay or wherever and make your own telescoping pier.


-Christopher Erickson
Observatory engineer
Waikoloa, HI 96738
www.summitkinetics.com
   

 

On Tue, Apr 20, 2021, 9:27 AM Worsel via groups.io <bryancashion=yahoo.com@groups.io> wrote:

Shailesh

I have used Park 4 for several years for exactly the roof height issues that you are evaluating.  This is for a 1100 mount with a 14 CDK scope.  There have been no problems.

I have a PierTech height adjustable pier (http://piertechinc.com/telescope-piers/).  When I need to tinker with equipment, I lower the mount and move it to P3, where it clears the roof. To remove equipment, I loosen the clutches (older style 1100) and rotate/lower the OTA to a separate support table before loosening the dovetail.  I normally leave the pier at almost max height, in order for the roof to clear on opening.

The adjustable piers are actually from another company, but I have forgotten the name.  I think Chris Erickson has these.

Bryan

 

Virus-free. www.avg.com


Re: GTOCP4 Caps

Roger Howard
 

I ordered the caps from Mouser today.  

The 2 large were $13.35 each and the 3 small were $9.60 each.  Like 80 in stock of each. 


Re: More APPM Results -- Can Someone Help Me Understand This?

Greg McCall
 

Ray, how do you know when to use APM or UCAC4?
(or a link to info)


Re: Interesting Behavior with APCC Pro and Pegasus Astro UPBv2

Ray Gralak
 

Hi Wade,

You might want to check the PNT file to see if the temperatures were recorded in degrees C instead of degrees F. There will be no obvious sign of the wrong scale except that the values might look unreasonable for that night.

If they were recorded in F, then you would need to convert them to C, or do another APPM run.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of W Hilmo
Sent: Wednesday, April 21, 2021 1:12 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Interesting Behavior with APCC Pro and Pegasus Astro UPBv2

I wanted to revisit this topic with an update.



I reached out to Pegasus Astro, and they are aware of the issue with unit in the temperature value. At this
time, they can’t fix it because SGP apparently has a dependency on the current behavior. They are reaching
out to the SGP folks to see if they can coordinate a proper fix.



Regarding my unguided imaging results, I switched the units back to metric in the Pegasus Astro software, and
that fixed the incorrect temperature in APCC Pro. I ran unguided again last night, and it was a slight
improvement over the previous unguided session, but still wasn’t satisfactory. I forgot to note yesterday that I
have my camera oriented so that declination in up/down in the frame. The elongation is diagonal, and flips 90
degrees after the meridian flip. That means that the components of drift are not isolated to either axis in
particular.



So I went back to take a closer look at the model in APCC. I played with setting and clearing different terms to
see the effect on the model. When I was doing this, I noticed that the “Correct for Refraction” checkbox was
cleared. When I checked that box, the east and west scatter plots dropped from 53.35 and 50.20 arc seconds,
respectively, to 9.42 and 6.32 arc seconds.



In my head, I assume that drift due to refraction will be aligned perpendicular to the horizon, instead of being
aligned with one of the axes. If that’s true, then my elongation might be up/down, relative to the horizon. I’m
going to give it another run tonight and see if I get better results with refraction correction enabled.



Thanks,

-Wade



From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of W Hilmo
Sent: Tuesday, April 20, 2021 7:10 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Interesting Behavior with APCC Pro and Pegasus Astro UPBv2



Thanks for the response.



I’m using the latest version of the Pegasus Astro software for the UPBv2, so it sounds like I need to contact
them regarding the temperature reporting issue. I’ve not yet confirmed that after switching back to Celcius, that
it restores the unguided accuracy. I should be able to give that a try tonight.



As for the Advanced Sequencer, I saw it for the first time yesterday. I was expecting a UI similar to the original
sequencer, which it’s not – but I think that it’s better. I really like to flexibility. I’m already thinking ahead to
when Astro-Physics updates APCC to support the new few-stars tracking model that they introduced with the
Mach2. It would be really cool to write a script to sample and plate solve 6 or 8 points along the target’s
declination for unguided imaging, and then have NINA invoke the script at the start of an imaging session.



-Wade



From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Dale Ghent
Sent: Tuesday, April 20, 2021 4:34 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Interesting Behavior with APCC Pro and Pegasus Astro UPBv2



Hi Wade,



You may need to update your Pegasus software to fix this issue.



Older versions of the Pegasus UPBv2 console app and ObservingConditions driver will relay the Fahrenheit
temperature to downstream consumers such as NINA or APCC when the console app is set to display units in
Fahrenheit.



The ASCOM ObservingConditions interface specification specifies that the values for its various meteorological
properties must be in SI units (ie, Celsius when it comes to temperature), so that is what APCC is expecting.
Pegasus issued a fix for this last year so you might just need an update unless they’ve reintroduced the bug in
a recent version.



This issue was even more obvious to those who have NINA set to convert the SI units too imperial for display.
This caused NINA to convert the Fahrenheit temperature to Fahrenheit again, resulting in some outlandish
temperature values being reported.



Aside from that, your description is quite an interesting depiction of how much temperature can alter the
tracking of the mount under a model, though. Glad you were able to work out the cause. Hope you like the
Advanced Sequencer, too. It is of course a work in progress but it’s maturing nicely.



On Apr 20, 2021, at 00:35, W Hilmo <y.groups@hilmo.net> wrote:

I've been doing some unguided imaging with my AP1600 w/Absolute Encoders and APCC Pro and have
seen some interesting behavior with unguided imaging.

The first few nights that I run unguided after building a model of about 180 points, everything was great.
I was blown away by how well it worked. The last few nights, not so much. I am seeing elongated stars and
some image drift over the course of the night.

I do not believe that this is flexure. I'm imaging with my AP130GTX, and I've double checked all
connections. I've double checked to make sure that the pointing model is enabled. I verified that the polar
alignment is still spot on. It's a bit difficult to troubleshoot because, without guiding, there aren't any log files to
examine. All I have are the subs that I can inspect.

Since we're getting into more moonlight, I've done some software updates (switched to the daily builds
for NINA so that I can use the advanced scheduler). I've also set up for doing tonight's run with the guider
enabled so that I can get some logs. As I was watching the session get started, I noticed something odd.
Specifically, I noticed that APCC reported the temperature at over 40 degrees C, which is very wrong. I am
using the Pegasus Astro Ultimate PowerBox v2 as the weather sensor.

It occurred to me that I made a change to the Pegasus software a few days ago to change from reporting
the temperature in C, to reporting the temperature in F. It looks like both APCC and NINA are reporting the
Fahrenheit value as Celcius. I am wondering if the significantly incorrect temperature interpretation has
effected the model such that it's lost accuracy. I have reverted the Pegasus software back to reporting in C,
and after tonight's run, I'm going back to unguided operation to see if I get that great result back that I was
getting the first couple of nights.

-Wade


Re: AP1100 park position question

Don Anderson
 

Thanks for the info Jack. I suspected as much. I checked ebay and they don't show and DL2s right now. I will have to keep my eyes open for one.

Don Anderson


On Wednesday, April 21, 2021, 07:51:02 a.m. MDT, Jack Huerkamp <mallincamusa@...> wrote:


Don,

 

When I purchased the original pair of lifting columns from Linak, I was over the engineering department of the local public works department in New Orleans and we did a lot of custom fabrications for all of our facilities.  As such, I was able to have them sell me two 1000 Newton columns and the associated controls.   Since I was already an established customer, I was able to get an upgraded set of 2500 Newton columns and associated controls last year.

 

I do not think Linak sells to the general public.

 

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 Don Anderson via groups.io
Sent: Tuesday, April 20, 2021 11:47 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] AP1100 park position question

 

Jack

Did Linak sell direct to you?

 

Don Anderson

 

 

On Tuesday, April 20, 2021, 09:36:40 p.m. MDT, Jack Huerkamp <mallincamusa@...> wrote:

 

 

Christopher,

 

The company is Linak out of Kentucky and the columns I used were the DL2 2500 Newton rated.  My original ones were rated at 1000 Newtons each when used with a non AP mount.  With the AP1600 and 150# of equipment on the dual column setup, I changed to the 2500 Newton thrust each – 5000 Newton total thrust.

 

DL2: Robust lifting column for desks, workstations and kitchens (linak-us.com)

 

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 Christopher Erickson
Sent: Tuesday, April 20, 2021 10:09 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] AP1100 park position question

 

Lymax columns. A lot cheaper to buy Lymax off of Ebay or wherever and make your own telescoping pier.


-Christopher Erickson
Observatory engineer
Waikoloa, HI 96738
www.summitkinetics.com
   

 

On Tue, Apr 20, 2021, 9:27 AM Worsel via groups.io <bryancashion=yahoo.com@groups.io> wrote:

Shailesh

I have used Park 4 for several years for exactly the roof height issues that you are evaluating.  This is for a 1100 mount with a 14 CDK scope.  There have been no problems.

I have a PierTech height adjustable pier (http://piertechinc.com/telescope-piers/).  When I need to tinker with equipment, I lower the mount and move it to P3, where it clears the roof. To remove equipment, I loosen the clutches (older style 1100) and rotate/lower the OTA to a separate support table before loosening the dovetail.  I normally leave the pier at almost max height, in order for the roof to clear on opening.

The adjustable piers are actually from another company, but I have forgotten the name.  I think Chris Erickson has these.

Bryan

 

Virus-free. www.avg.com


Re: Interesting Behavior with APCC Pro and Pegasus Astro UPBv2

Dale Ghent
 

Thanks for the update on this.

Wow, so I thought they had fixed this in the past because it was reported by some NINA users, then I was informed that Pegasus fixed it. I guess not. I run my own gear in metric all the time so I never noticed that it actually hadn't been fixed. I just tested on my UPBv2 and, yeah, the fahrenheit value does make its way through the ASCOM driver.

Ugh. The hold-up for a fix really validates me putting my foot down and saying "no, get them to fix their bug" whenever a user asks us to implement a workaround a vendor's bug. Downstack defects should be addressed directly where they are, and here's a rather perfect illustration as to why. Getting it fixed might take longer, but everyone upstream wins in the end. IMO Pegasus should just press on and issue a fix because it's critical data that is impacting other apps in an operational way.

I will be very interested to see your refraction-compensated results. I'm now trying to convince my club to spring for APCC Pro so we can do unguided imaging on the serviced 1200GTO. Brian's image was a fantastic example of this, and you A/B'ing with refraction comp. might help drive home the point if it is indeed the source of your slight tracking imperfection.

On Apr 21, 2021, at 16:12, W Hilmo <y.groups@hilmo.net> wrote:

I wanted to revisit this topic with an update.

I reached out to Pegasus Astro, and they are aware of the issue with unit in the temperature value. At this time, they can’t fix it because SGP apparently has a dependency on the current behavior. They are reaching out to the SGP folks to see if they can coordinate a proper fix.

Regarding my unguided imaging results, I switched the units back to metric in the Pegasus Astro software, and that fixed the incorrect temperature in APCC Pro. I ran unguided again last night, and it was a slight improvement over the previous unguided session, but still wasn’t satisfactory. I forgot to note yesterday that I have my camera oriented so that declination in up/down in the frame. The elongation is diagonal, and flips 90 degrees after the meridian flip. That means that the components of drift are not isolated to either axis in particular.

So I went back to take a closer look at the model in APCC. I played with setting and clearing different terms to see the effect on the model. When I was doing this, I noticed that the “Correct for Refraction” checkbox was cleared. When I checked that box, the east and west scatter plots dropped from 53.35 and 50.20 arc seconds, respectively, to 9.42 and 6.32 arc seconds.

In my head, I assume that drift due to refraction will be aligned perpendicular to the horizon, instead of being aligned with one of the axes. If that’s true, then my elongation might be up/down, relative to the horizon. I’m going to give it another run tonight and see if I get better results with refraction correction enabled.

Thanks,
-Wade

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of W Hilmo
Sent: Tuesday, April 20, 2021 7:10 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Interesting Behavior with APCC Pro and Pegasus Astro UPBv2

Thanks for the response.

I’m using the latest version of the Pegasus Astro software for the UPBv2, so it sounds like I need to contact them regarding the temperature reporting issue. I’ve not yet confirmed that after switching back to Celcius, that it restores the unguided accuracy. I should be able to give that a try tonight.

As for the Advanced Sequencer, I saw it for the first time yesterday. I was expecting a UI similar to the original sequencer, which it’s not – but I think that it’s better. I really like to flexibility. I’m already thinking ahead to when Astro-Physics updates APCC to support the new few-stars tracking model that they introduced with the Mach2. It would be really cool to write a script to sample and plate solve 6 or 8 points along the target’s declination for unguided imaging, and then have NINA invoke the script at the start of an imaging session.

-Wade

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Dale Ghent
Sent: Tuesday, April 20, 2021 4:34 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Interesting Behavior with APCC Pro and Pegasus Astro UPBv2

Hi Wade,

You may need to update your Pegasus software to fix this issue.

Older versions of the Pegasus UPBv2 console app and ObservingConditions driver will relay the Fahrenheit temperature to downstream consumers such as NINA or APCC when the console app is set to display units in Fahrenheit.

The ASCOM ObservingConditions interface specification specifies that the values for its various meteorological properties must be in SI units (ie, Celsius when it comes to temperature), so that is what APCC is expecting. Pegasus issued a fix for this last year so you might just need an update unless they’ve reintroduced the bug in a recent version.

This issue was even more obvious to those who have NINA set to convert the SI units too imperial for display. This caused NINA to convert the Fahrenheit temperature to Fahrenheit again, resulting in some outlandish temperature values being reported.

Aside from that, your description is quite an interesting depiction of how much temperature can alter the tracking of the mount under a model, though. Glad you were able to work out the cause. Hope you like the Advanced Sequencer, too. It is of course a work in progress but it’s maturing nicely.


On Apr 20, 2021, at 00:35, W Hilmo <y.groups@hilmo.net> wrote:

I've been doing some unguided imaging with my AP1600 w/Absolute Encoders and APCC Pro and have seen some interesting behavior with unguided imaging.

The first few nights that I run unguided after building a model of about 180 points, everything was great. I was blown away by how well it worked. The last few nights, not so much. I am seeing elongated stars and some image drift over the course of the night.

I do not believe that this is flexure. I'm imaging with my AP130GTX, and I've double checked all connections. I've double checked to make sure that the pointing model is enabled. I verified that the polar alignment is still spot on. It's a bit difficult to troubleshoot because, without guiding, there aren't any log files to examine. All I have are the subs that I can inspect.

Since we're getting into more moonlight, I've done some software updates (switched to the daily builds for NINA so that I can use the advanced scheduler). I've also set up for doing tonight's run with the guider enabled so that I can get some logs. As I was watching the session get started, I noticed something odd. Specifically, I noticed that APCC reported the temperature at over 40 degrees C, which is very wrong. I am using the Pegasus Astro Ultimate PowerBox v2 as the weather sensor.

It occurred to me that I made a change to the Pegasus software a few days ago to change from reporting the temperature in C, to reporting the temperature in F. It looks like both APCC and NINA are reporting the Fahrenheit value as Celcius. I am wondering if the significantly incorrect temperature interpretation has effected the model such that it's lost accuracy. I have reverted the Pegasus software back to reporting in C, and after tonight's run, I'm going back to unguided operation to see if I get that great result back that I was getting the first couple of nights.

-Wade


Re: M 81

Steven Panish
 

I think Kevin's approach is correct for CMOS.  I have the 1600MM Pro and there just doesn't seem to be an advantage to long subs, although I've only done one galaxy and it was faint.  The integration recovers the low end and the high end has less saturation.  Kevin's 294MM has much greater full well depth than the 1600 as well as 14 vs 12 bits.  There were some minor sensor issues but I'm getting one when they are fixed.  

Steve

On Tue, Apr 20, 2021 at 10:11 PM Mike Dodd <mike@...> wrote:
I have an ASI-1600MC Pro on a TMB130SS f/7 APO on an AP1200. I usually shoot 10m subs. For galaxies I often use Pixinsight's HDRMultiscaleTransformation to recover core detail. Here is my attempt at M81 and M82: http://astronomy.mdodd.com/galaxies-18.html

It's easy to get carried away with HDR. I've attached a screen shot of M81 where I went way too far.

CS, Mike

380x383 (0x0)
0 B


Re: Strange behavior with Mach 2 and MaximDL auto pier flip #ASCOM_V2_Driver #Mach2GTO #Guiding

jaddbd
 

I bit the bullet and upgraded a few months ago to the latest Maxim build (now 6.26) from an early version of 6.  The quirky guiding issues I had (including the occasional star-faded issue) finally seem to have been rectified.  

JD 

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