Date   

Re: Environment Data for APCC

Emilio J. Robau, P.E.
 

Thank you for the response.   Before I post a question I usually do the search and I did the same here and did notice Dale's post.  However, nothing in it seems new.  I will review it again against my settings and see if I can get it to work.

Thanks again for the response


Re: Imaging tonight with Mach2 at 5 below zero

Roland Christen
 

Sometimes I guide, sometimes I don't. Depends what I'm after. If you have a good model, then guiding may not be needed.

Rolando

-----Original Message-----
From: Shailesh Trivedi <shailesh.trivedi@...>
To: main@ap-gto.groups.io
Sent: Fri, Jan 21, 2022 5:01 pm
Subject: Re: [ap-gto] Imaging tonight with Mach2 at 5 below zero

Roland,

I have experienced such a star is lost issue with my Mach2 and 1100 with AE. So my question is, if a plate-solve helps center the object and the polar alignment is within a few arc seconds of Alt  and AZ as reported by PEMPRO, do I even bother with guiding?

I thought the answer was dependent on the focal length and image scale.

Shailesh

--
Roland Christen
Astro-Physics


Re: Imaging tonight with Mach2 at 5 below zero

Shailesh Trivedi
 

Roland,

I have experienced such a star is lost issue with my Mach2 and 1100 with AE. So my question is, if a plate-solve helps center the object and the polar alignment is within a few arc seconds of Alt  and AZ as reported by PEMPRO, do I even bother with guiding?

I thought the answer was dependent on the focal length and image scale.

Shailesh


Re: Environment Data for APCC

Marcelo Figueroa
 

I am using a mix of a Pegasus device (which does not provide pressure) and OpenWeather and it works perfect. Here are instructions for configuring OpenWeather in APCC (not mine, by the way):

https://ap-gto.groups.io/g/main/message/73588


Re: Imaging tonight with Mach2 at 5 below zero

Roland Christen
 

Balance in Dec is important. Try to get it dead nuts balanced.

Roland

-----Original Message-----
From: Brent Boshart <bboshart@...>
To: main@ap-gto.groups.io
Sent: Fri, Jan 21, 2022 2:11 pm
Subject: Re: [ap-gto] Imaging tonight with Mach2 at 5 below zero

I'm pleased with my Mach2 and PHD2 guiding with total RMS ranging from 0.25 to 0.4 depending on seeing.  However, I have noticed that the Dec RMS is usually 50% to 60% higher than RA RMS.  (My polar alignment with a permanent pier is within 1 arcminute.)  I have played around with PHD2 settings, but consistently Dec seems to give a higher RMS than RA.

--
Roland Christen
Astro-Physics


Re: Imaging tonight with Mach2 at 5 below zero

Roland Christen
 

For encoder mounts the ideal thing is to not send any guide pulses if the star is lost. Maxim DL starts looking for the star and sends correction pulses, so in the end when the star returns, the axes have moved so far away that the star is outside the guide box. This is even more annoying than a beep.

Rolando

-----Original Message-----
From: Brian Valente <bvalente@...>
To: main@ap-gto.groups.io
Sent: Fri, Jan 21, 2022 12:45 pm
Subject: Re: [ap-gto] Imaging tonight with Mach2 at 5 below zero

>>>  it is so nice not to hear anymore that annoying PHD2 beep when you lose the guide star.

not that it fixes guiding problems, but you can disable the beeps in PHD :)

image.png

On Fri, Jan 21, 2022 at 10:37 AM Marcelo Figueroa via groups.io <marfig1970=yahoo.com@groups.io> wrote:
On Fri, Jan 21, 2022 at 12:14 AM, AaronW wrote:
I am a new owner of a Mach2 and am extremely happy with it (my first ever mount, actually!).  However, I never get anything close to 0.15 arc sec rms.  I have not yet attempted to build a pointing model and am simply guiding with PHD2.  But perhaps my PHD settings are not what they should be.  
 
I am imaging exclusively in narrowband in Bortle 7/8 skies, and seeing conditions vary from night to night, but even under “above average” seeing conditions (as defined by the app “Astrospheric”), the best I can get is 0.3 arc sec total rms (think I was at 0.25 for a few hours one night).  
 
I always image at a focal length of between 730 - 910mm, I polar align easily with SharpCap and am always within just a few arc seconds of error), and my PHD2 settings are as follows:

I also have a Mach 2 and also do pretty much only narrowband because of my light pollution. My recommendation is to build a model and forget the guiding, it is so nice not to hear anymore that annoying PHD2 beep when you lose the guide star.
 
You are going to have to experiment a bit with how long you can expose and keep the stars round and the light pollution doesn't start to become annoying. That depends on your particular setup.
 
 
 
 
 
 
 


--
Brian 



Brian Valente

--
Roland Christen
Astro-Physics


Environment Data for APCC

Emilio J. Robau, P.E.
 

Hello,

I have been unable to get my environment data to come in using openweather map.  I can't seem to get it to work.  I have my API properly set up and working in NINA when I want.   However for some reason I can't seem to get it to work in APCC so my data is filled in under the appropriate locations in the modeling tab.   I just keep getting an error message where the data is supposed to be entered.  I don't know what I am missing.  This is a somewhat trivial problem, but I am getting to the point where I am more completely using the functionality of APCC and this is one of those annoyances that keeps coming up.   I have been trying since 2017 from time to time.  Any hints?  Anyone else can't get it to work?


Re: Imaging tonight with Mach2 at 5 below zero

Brent Boshart
 

I'm pleased with my Mach2 and PHD2 guiding with total RMS ranging from 0.25 to 0.4 depending on seeing.  However, I have noticed that the Dec RMS is usually 50% to 60% higher than RA RMS.  (My polar alignment with a permanent pier is within 1 arcminute.)  I have played around with PHD2 settings, but consistently Dec seems to give a higher RMS than RA.


Re: [ap-ug] Life after the Stowaway

fernandorivera3
 

Was there a long wait time for the CFF 300 to be completed, then delivered?

Fernando


Re: Mach1 RA guiding spike

yanzhe liu
 

Brian,


Roland,

The spikes were between dithers, so dither should not be the problem.
One of my friends said he had similar issue on his AP mount, and cleaning/re-gease the gear fixed the issue. Do you think mine looks the same?

Thanks

Yanzhe

On Fri, Jan 21, 2022 at 10:35 AM Brian Valente <bvalente@...> wrote:
can you upload your guidelog? 

screen capture isn't helpful to diagnose this behavior



On Fri, Jan 21, 2022 at 10:09 AM yanzhe liu <liuyanzhe@...> wrote:
Repost as my original post did not seem to go through.

Just noticed something abnormal with my Mach1 guiding. There were spikes on RA guiding. Sometimes it runs fine for a couple of hours, sometimes a spike comes every few minutes like the attached screenshot below..
 
Each pixel is ~4" so spike is ~10".
 
What could be the problem? There is no noticeable backlash on RA/DEC. RA/DEC are well balanced. Do I need to re-mesch RA, or something is wrong with gearbox?
 



--
Brian 



Brian Valente


Re: Imaging tonight with Mach2 at 5 below zero

 

>>>  it is so nice not to hear anymore that annoying PHD2 beep when you lose the guide star.

not that it fixes guiding problems, but you can disable the beeps in PHD :)

image.png


On Fri, Jan 21, 2022 at 10:37 AM Marcelo Figueroa via groups.io <marfig1970=yahoo.com@groups.io> wrote:
On Fri, Jan 21, 2022 at 12:14 AM, AaronW wrote:
I am a new owner of a Mach2 and am extremely happy with it (my first ever mount, actually!).  However, I never get anything close to 0.15 arc sec rms.  I have not yet attempted to build a pointing model and am simply guiding with PHD2.  But perhaps my PHD settings are not what they should be.  
 
I am imaging exclusively in narrowband in Bortle 7/8 skies, and seeing conditions vary from night to night, but even under “above average” seeing conditions (as defined by the app “Astrospheric”), the best I can get is 0.3 arc sec total rms (think I was at 0.25 for a few hours one night).  
 
I always image at a focal length of between 730 - 910mm, I polar align easily with SharpCap and am always within just a few arc seconds of error), and my PHD2 settings are as follows:

I also have a Mach 2 and also do pretty much only narrowband because of my light pollution. My recommendation is to build a model and forget the guiding, it is so nice not to hear anymore that annoying PHD2 beep when you lose the guide star.
 
You are going to have to experiment a bit with how long you can expose and keep the stars round and the light pollution doesn't start to become annoying. That depends on your particular setup.
 
 
 
 
 
 
 



--
Brian 



Brian Valente


Re: APCC Pro 1.9.3.3

Marcelo Figueroa
 

Forget it. I just saw the update in APCC, how nice that the Flip Offset Pading option was included in the meridian limits.
 
Thank you, 


Re: Imaging tonight with Mach2 at 5 below zero

Marcelo Figueroa
 

On Fri, Jan 21, 2022 at 12:14 AM, AaronW wrote:
I am a new owner of a Mach2 and am extremely happy with it (my first ever mount, actually!).  However, I never get anything close to 0.15 arc sec rms.  I have not yet attempted to build a pointing model and am simply guiding with PHD2.  But perhaps my PHD settings are not what they should be.  
 
I am imaging exclusively in narrowband in Bortle 7/8 skies, and seeing conditions vary from night to night, but even under “above average” seeing conditions (as defined by the app “Astrospheric”), the best I can get is 0.3 arc sec total rms (think I was at 0.25 for a few hours one night).  
 
I always image at a focal length of between 730 - 910mm, I polar align easily with SharpCap and am always within just a few arc seconds of error), and my PHD2 settings are as follows:

I also have a Mach 2 and also do pretty much only narrowband because of my light pollution. My recommendation is to build a model and forget the guiding, it is so nice not to hear anymore that annoying PHD2 beep when you lose the guide star.
 
You are going to have to experiment a bit with how long you can expose and keep the stars round and the light pollution doesn't start to become annoying. That depends on your particular setup.
 
 
 
 
 
 
 


Re: Mach1 RA guiding spike

 

can you upload your guidelog? 

screen capture isn't helpful to diagnose this behavior



On Fri, Jan 21, 2022 at 10:09 AM yanzhe liu <liuyanzhe@...> wrote:
Repost as my original post did not seem to go through.

Just noticed something abnormal with my Mach1 guiding. There were spikes on RA guiding. Sometimes it runs fine for a couple of hours, sometimes a spike comes every few minutes like the attached screenshot below..
 
Each pixel is ~4" so spike is ~10".
 
What could be the problem? There is no noticeable backlash on RA/DEC. RA/DEC are well balanced. Do I need to re-mesch RA, or something is wrong with gearbox?
 



--
Brian 



Brian Valente


Re: Mach1 RA guiding spike

Roland Christen
 

Since they are all exactly the same heights it appears to be dither moves.
Re-mesh won't do anything, so don't mess with it at this time, until you find out for sure what causes these moves. Check your log files and look for move commands at those points.

Rolando



-----Original Message-----
From: yanzhe liu <liuyanzhe@...>
To: main@ap-gto.groups.io
Sent: Fri, Jan 21, 2022 12:08 pm
Subject: [ap-gto] Mach1 RA guiding spike

Repost as my original post did not seem to go through.

Just noticed something abnormal with my Mach1 guiding. There were spikes on RA guiding. Sometimes it runs fine for a couple of hours, sometimes a spike comes every few minutes like the attached screenshot below..
 
Each pixel is ~4" so spike is ~10".
 
What could be the problem? There is no noticeable backlash on RA/DEC. RA/DEC are well balanced. Do I need to re-mesch RA, or something is wrong with gearbox?
 

--
Roland Christen
Astro-Physics


Mach1 RA guiding spike

yanzhe liu
 

Repost as my original post did not seem to go through.

Just noticed something abnormal with my Mach1 guiding. There were spikes on RA guiding. Sometimes it runs fine for a couple of hours, sometimes a spike comes every few minutes like the attached screenshot below..
 
Each pixel is ~4" so spike is ~10".
 
What could be the problem? There is no noticeable backlash on RA/DEC. RA/DEC are well balanced. Do I need to re-mesch RA, or something is wrong with gearbox?
 


Re: Imaging tonight with Mach2 at 5 below zero

ernie.mastroianni@...
 

I had no problems at all with my Mach2 at about 0 deg F in MKE earlier this month. Taken with a C925 at f/10.


Re: Flattener for RC?

Roland Christen
 

I don't have a suitable flattener for an RC, sorry.

Roland

-----Original Message-----
From: Steve Reilly <sreilly24590@...>
To: main@ap-gto.groups.io
Sent: Fri, Jan 21, 2022 11:19 am
Subject: [ap-gto] Flattener for RC?

Morning Roland,
 
I think we’ve had this discussion before but can’t find a trace of it anywhere. Is there any chance you have a flattener or flattener/reducer that will work with my OGS 12.5” f/9 with the STL-11000?
 
Thanks,
 
Steve
 

--
Roland Christen
Astro-Physics


Flattener for RC?

Steve Reilly
 

Morning Roland,

 

I think we’ve had this discussion before but can’t find a trace of it anywhere. Is there any chance you have a flattener or flattener/reducer that will work with my OGS 12.5” f/9 with the STL-11000?

 

Thanks,

 

Steve

 


Re: Imaging tonight with Mach2 at 5 below zero

 

Hi Aaron

0.1" rms is an astonishingly low number, I don't know if you should be judging your results based on that.

0.25-0.3" is already excellent results. At this level of precision i think the RMS results are more about mount performance and less about guiding. For encoder mounts it's more about seeing conditions and encoders/modeling, with the guiding very gently keeping things on track

I would try building an all sky model in APCC Pro, which is probably the next most significant improvement beyond the encoders. 

Regarding guiding, you need to upload a guidelog to really know what is going on. Clayton mentioned the baseline guiding steps, which you can download here: 
https://www.dropbox.com/s/zrf0au7jaisvt85/How%20to%20create%20a%20baseline%20for%20guiding%20results%20using%20OpenPHD2.pdf?dl=0

When you use the New Profile Wizard, it will recommend using lowpass2 for your Dec algorithm. 

OpenPHD is doing a beta on some new features for encoder mounts, if you're interested in trying this drop me a private message and we can get you set up


Brian