Date   

Re: Appm view image

Ray Gralak
 

I am trying to use the nasa skyview test things ourt but am having a problem that it will not plate solve those
images. any suggestions.
The file of view may be too small for some plate solvers.


-Ray


Re: CP3 power connector (12V)

John Gaul
 
Edited

EDIT: sorry, didn't read original post carefully enough. Looking for a female/socket for the CP3 side not the plug for power cable as below.

----

I believe (from previous postings on this group) that it's a 2.1mm x 5.5 mm barrel connector, center positive, and ideally the threaded variant.
 
Here's one I found. Sorry for UK link (I guess you're in the USA), but hope it helps you to find a supplier for you.
 
 
 


Re: Appm view image

Ray Gralak
 

forgot to include that I am using a C11 edge with 0.7 reducer for a pixel scale of about 0.4
Okay, the optics might be a little out of focus, or alignment. Even tube currents can contribute to misshapened stars.

-Ray


Re: Appm view image

Michael Freeberg
 

Hi Ray,

forgot to include that I am using a C11 edge with 0.7 reducer for a pixel scale of about 0.4

On May 23, 2022, at 9:25 AM, Ray Gralak <iogroups@...> wrote:

Mike,

You should check that you have the latest QHY ASCOM driver. It's odd that the image is taller than it is wide. Is that what you see as well?

As for the star shapes, it could be drift or optics. What is the image scale? Which telescope are you using?

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Michael Freeberg
Sent: Monday, May 23, 2022 6:43 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Appm view image

HI Ray, I have attached a image and it seems to show the stars. Not sure why they are oval ???. The software
seems to platesolve but when the view image screen pops up I don’t see the image.

https://1drv.ms/u/s!Alc02VkpqUfVaDqsUC39NGvl-jY?e=NOwybE

Mike



Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for Windows



From: Ray Gralak <mailto:iogroups@...>
Sent: Monday, May 23, 2022 1:21 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Appm view image



Hi Mike,



I have been working on building a model with my Mach2 and when the view image screen pops up , it is blank,
however the program is plate solving ok. I am using a qhy163 under ascom. Do I have something set wrong.


APPM's ASCOM window should automatically scale the FITS image appropriately for viewing, so you are not
missing a setting. If you have an image that is blank please zip the image and post it here. You can use APCC’s
Log zipper utility to locate images.



If you do not have an image, then on your next opportunity, enable APPM to save all images like this:







Then when you do another APPM run the images will be saved.



-Ray








Re: Appm view image

Michael Freeberg
 

HI Ray,

Not sure why image is taller than wide. I show it as 1761 x 2328. I do not see how I can have drift in such a short exposure.

I am trying to use the nasa skyview test things ourt but am having a problem that it will not plate solve those images. any suggestions.

I will check out the camera drivers.

Mike

On May 23, 2022, at 9:25 AM, Ray Gralak <iogroups@...> wrote:

Mike,

You should check that you have the latest QHY ASCOM driver. It's odd that the image is taller than it is wide. Is that what you see as well?

As for the star shapes, it could be drift or optics. What is the image scale? Which telescope are you using?

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Michael Freeberg
Sent: Monday, May 23, 2022 6:43 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Appm view image

HI Ray, I have attached a image and it seems to show the stars. Not sure why they are oval ???. The software
seems to platesolve but when the view image screen pops up I don’t see the image.

https://1drv.ms/u/s!Alc02VkpqUfVaDqsUC39NGvl-jY?e=NOwybE

Mike



Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for Windows



From: Ray Gralak <mailto:iogroups@...>
Sent: Monday, May 23, 2022 1:21 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Appm view image



Hi Mike,



I have been working on building a model with my Mach2 and when the view image screen pops up , it is blank,
however the program is plate solving ok. I am using a qhy163 under ascom. Do I have something set wrong.


APPM's ASCOM window should automatically scale the FITS image appropriately for viewing, so you are not
missing a setting. If you have an image that is blank please zip the image and post it here. You can use APCC’s
Log zipper utility to locate images.



If you do not have an image, then on your next opportunity, enable APPM to save all images like this:







Then when you do another APPM run the images will be saved.



-Ray








Re: Appm view image

Ray Gralak
 

Mike,

You should check that you have the latest QHY ASCOM driver. It's odd that the image is taller than it is wide. Is that what you see as well?

As for the star shapes, it could be drift or optics. What is the image scale? Which telescope are you using?

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Michael Freeberg
Sent: Monday, May 23, 2022 6:43 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Appm view image

HI Ray, I have attached a image and it seems to show the stars. Not sure why they are oval ???. The software
seems to platesolve but when the view image screen pops up I don’t see the image.

https://1drv.ms/u/s!Alc02VkpqUfVaDqsUC39NGvl-jY?e=NOwybE

Mike



Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for Windows



From: Ray Gralak <mailto:iogroups@...>
Sent: Monday, May 23, 2022 1:21 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Appm view image



Hi Mike,



I have been working on building a model with my Mach2 and when the view image screen pops up , it is blank,
however the program is plate solving ok. I am using a qhy163 under ascom. Do I have something set wrong.


APPM's ASCOM window should automatically scale the FITS image appropriately for viewing, so you are not
missing a setting. If you have an image that is blank please zip the image and post it here. You can use APCC’s
Log zipper utility to locate images.



If you do not have an image, then on your next opportunity, enable APPM to save all images like this:







Then when you do another APPM run the images will be saved.



-Ray




Re: CP3 power connector (12V)

Mike Dodd
 

On 5/23/2022 2:37 AM, drgert1 via groups.io wrote:
Hello All,
Does anybody have a source for replacing the power connector / socket at the GTO CP3 12V panel?
...maybe some nice soul out there knows the Digikey part number of the 12V connector where I can order them at $2.99 a piece for 5 of them.
I found this on Digi-Key: <https://www.digikey.com/en/products/detail/kycon-inc/KLDPLX-0202-B/12620420>

Search for "DC power connector" then check out the "barrel" type connectors. Look at the thumbnails on the list, click one that looks promising, then download the datasheet from the details page, and compare with what's on the CP3.

It's a fairly standard connector, so maybe the link above is what you need. If not, I'm confident you'll eventually find it.

--- Mike


Re: Appm view image

Michael Freeberg
 

HI Ray,  I have attached a image and it seems to show the stars.  Not sure why they are oval ???.  The software seems to platesolve but when the view image screen pops up I don’t see the image. 

https://1drv.ms/u/s!Alc02VkpqUfVaDqsUC39NGvl-jY?e=NOwybE

Mike

 

Sent from Mail for Windows

 

From: Ray Gralak
Sent: Monday, May 23, 2022 1:21 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Appm view image

 

Hi Mike,

 

> I have been working on building a model with my Mach2 and when the view image screen pops up , it is blank,

> however the program is plate solving ok.  I am using a qhy163 under ascom. Do I have something set wrong.

 

APPM's ASCOM window should automatically scale the FITS image appropriately for viewing, so you are not missing a setting. If you have an image that is blank please zip the image and post it here. You can use APCC’s Log zipper utility to locate images.

 

If you do not have an image, then on your next opportunity, enable APPM to save all images like this:

 

 

Then when you do another APPM run the images will be saved.

 

-Ray

 


Re: 110 scope musings

Jeff B
 

"P.S. I still love Mak-Newts and I think they are about as perfect an optical system that exists for visual only.*
And a nice size Mak-Cass for imaging only. But ne'er the twin shall meet to produce both results at the same time."

*ask me why"

I'm still asking Roland.  I love MNs too for visual and always have one around, most recently my MW/APM MN86.

I would love to see you make a run of say, 8", 10" and maybe even a 12" MNs say, perhaps F5.6.

Jeff

On Sun, May 22, 2022 at 11:32 PM Don Anderson via groups.io <jockey_ca=yahoo.ca@groups.io> wrote:
Very impressive Roland! I love my refractors for the very reasons you described. They fill a  in the visual/photographic world of this hobby. I am looking forward to using my brand new 92 Stowaway that I recently received. It fits perfectly on my AP900GOTO
Along with my other two gems! Will follow the development of the 110 Starfire with great interest.
Don
Astro Equipment | Flickr


Re: Appm view image

Ray Gralak
 

Hi Mike,

 

> I have been working on building a model with my Mach2 and when the view image screen pops up , it is blank,

> however the program is plate solving ok.  I am using a qhy163 under ascom. Do I have something set wrong.

 

APPM's ASCOM window should automatically scale the FITS image appropriately for viewing, so you are not missing a setting. If you have an image that is blank please zip the image and post it here. You can use APCC’s Log zipper utility to locate images.

 

If you do not have an image, then on your next opportunity, enable APPM to save all images like this:

 

 

Then when you do another APPM run the images will be saved.

 

-Ray


Appm view image

Michael Freeberg
 

I have been working on building a model with my Mach2 and when the view image screen pops up , it is blank, however the program is plate solving ok.  I am using a qhy163 under ascom. Do I have something set wrong.

Mike


CP3 power connector (12V)

drgert1
 

Hello All,

Does anybody have a source for replacing the power connector / socket at the GTO CP3 12V panel?

Doing the well known screw driver 'Bend the pin' trick only works so many times and my concern is growing that material fatigue in the in might break it some time. Long story short I want to replace it (either now, or have a proper replacement pat as a spare for when the time comes)

I assume the proper answer here is to call AP for the part, and yes I could/should/(will probably) do that. And they will probably say that for sure they can ship some spares at $29 a piece post postage. That of course is a very possible way to proceed. But maybe some nice soul out there knows the Digikey part number of the 12V connector where I can order them at $2.99 a piece for 5 of them.

Any recommendations are welcome.

Thanks & Clear Skies,
Gert


Re: 110 scope musings

Don Anderson
 

Very impressive Roland! I love my refractors for the very reasons you described. They fill a  in the visual/photographic world of this hobby. I am looking forward to using my brand new 92 Stowaway that I recently received. It fits perfectly on my AP900GOTO
Along with my other two gems! Will follow the development of the 110 Starfire with great interest.
Don
Astro Equipment | Flickr


Re: The Quest and the Solution – New Product Announcement

Emilio J. Robau, P.E.
 


Re: The Quest and the Solution – New Product Announcement

Alex
 

On Fri, May 20, 2022 at 08:09 PM, Mike Dodd wrote:
Have you considered 3D-printing a tapered washer to fit between your camera and ocuser? The attached photo shows one I drew in 15 minutes of fiddling around, so it's easy to create. This one is greatly exaggerated for illustration, but the principle is the same -- tapering from near-zero to whatever thickness you want. I added a little handle to make it easy to rotate to find the best orientation.
If you don't have a 3D printer, you can buy these:  https://astrodymium.com/products/rotating-tilt-adjusters

Alex


Some clarification and thoughts on Spot Diameters, etc.

Roland Christen
 

Hello Astro-imagers,

With the introduction of the 110 GTX I have made up some charts under technical design details that show various performance data. One chart that I initially hesitated to show was Spot Size. I eventually included it because some competing scope manufacturers use spot sizes to show imaging performance and perhaps use it for marketing purposes. Smaller numbers are always better than larger numbers, in the minds of consumers.

The reality is this:
1) There is no such thing as spot size. Diffraction effects determine the smallest spot diameter, not an artificial ray trace result.
2) Diffraction effects produce a minimum size star image, called the Airy Disc. This is the smallest size possible for white light.
3) The Airy Disc diameter is 1.35 x F-number of the optic in white light (red light slightly larger, deep blue slightly smaller).

Airy Disc diameter in microns for various telescope lenses, regardless of aperture:

F5:   6.8 microns
F6:   8.1 microns
F7:   9.5 microns
F8:   10.8 microns
F10: 13.5 microns

There is no way that any F7 telescope can produce a 1 micron spot diameter, no matter how well color corrected an optic is. It's an artificial number that comes out of an optical design program that uses geometrical ray tracing instead of wavefront analysis. It is not reality. For example, if you ray trace the on-axis spot diameter of a Newtonian parabolic mirror, the spot diameter comes out as zero microns. Which would mean that the optic has infinite resolution. For a 150mm F7 telescope that produces a 1 micron spot diameter, it would have a resolution equal to a 56 inch, 1.4 meter optic. Clearly impossible.

Ray tracing has value to the optical designer as a fast way to evaluate an optical design. It can come close, but only wavefront analysis can determine the best contrast and resolution. Ray tracing numbers (RMS Spot diameters) are really only accurate when the aberrations or spot sizes are larger than the Airy Disc diameter. Smaller numbers than the theoretical Airy Disc diameter are meaningless and don't occur in the real world.

Roland Christen

--
Roland Christen
Astro-Physics


Re: 110 scope musings

Jeff B
 

"*ask me why"

I'll bite.

Why?

Jeff

On Fri, May 20, 2022 at 9:29 PM Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:
helloo Astronuts,

Well, you have by now seen the 110 product page, and I have a few thoughts I want to pass along.

For the past 2 years I have been keenly aware of trends in this hobby, and have been listening to you active users as to what you want in a scope. So I have spent an inordinate amount of time working out the best optical system that would fulfill a lot of the most desirable things that everyone has requested. I'm leaving out Newts because it's not my specialty.

You want:
1)  sharp stars with essentially perfect color correction:   Apo Triplet Refractors, Mak-Newts, Mak-Cass
2)  High power visual instrument with highest contrast and Strehl:   Refractors, Mak-Newts, Mak-Cass with very small obstruction
3)  capable of imaging wide fields as well as the above:   Whoops, that leaves only Refractors and Maks with large obstruction
4)  High power high contrast visual + wide field imaging capability.   That leaves only Refractors.

I know that lots of people would like to have a high performance visual scope that has refractor-like contrast and a Mak-Newt fills the bill. But there is no way you can also use it for wide field imaging. As soon as you make the secondary size big enough to cover any modern imaging chip, there goes the visual contrast. Only the refractor can fulfill all uses at once. With today's newest glass compounds we can make a fast refractor that performs for just about any purpose, even for high power visual. So that's how I settled on this particular design. It's a Stowaway on Steroids.

Rolando

P.S. I still love Mak-Newts and I think they are about as perfect an optical system that exists for visual only.*
And a nice size Mak-Cass for imaging only. But ne'er the twin shall meet to produce both results at the same time.

*ask me why

--
Roland Christen
Astro-Physics


Re: [ap-ug] ZWO color camera problem - Update

Calypte
 
Edited

Rolando, maybe I've missed this detail in one of these posts.  What scope are you using this ZWO camera with, and what adapters are you using?


Re: The Quest and the Solution – New Product Announcement

Thomas Swann
 

The return of a 4" f/6 AP refractor.  My dreams have come true.  I got on the Traveler list too late back in the day to get one.  Now I just need some luck.  This is so exciting.


Re: The Quest and the Solution – New Product Announcement

Mike Dodd
 

On 5/20/2022 9:52 PM, Moshen Chan wrote:
My only wish is some built in way to adjust tilt on the scope, either at the lens cell or focuser to allow us to dial out any remaining mechanical tilt in the scope due to tolerance stacking.
Have you considered 3D-printing a tapered washer to fit between your camera and ocuser? The attached photo shows one I drew in 15 minutes of fiddling around, so it's easy to create. This one is greatly exaggerated for illustration, but the principle is the same -- tapering from near-zero to whatever thickness you want. I added a little handle to make it easy to rotate to find the best orientation.

You could make several of these of incrementing thickness. and choose the one that corrects the best. Not as convenient as adjustment screws, but it ought to work.

--- Mike

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