Date   

Re: 47 Tucanae with 155EDF refractor

Bill Long
 

Just to add, the 3.5" focuser from AP is excellent! I had 11lbs of camera, wheel, OAG, and guide camera on it with no problem at all. Very robust. 


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Marj Christen <marj@...>
Sent: Thursday, September 9, 2021 2:54 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] 47 Tucanae with 155EDF refractor
 

Christopher, the 4” focuser is no longer available, but our newer 3.5” focuser would be an appropriate replacement. We do not have them in stock at the moment, but they are in production. Click the Notify Me button on the webpage and we will contact you when it is available. The upgrade is very quick and easy.

https://www.astro-physics.com/s35focer-ft

 

 

Clear Skies,

Marj Christen

Astro-Physics

11250 Forest Hills Road

Machesney Park, IL 61115

Phone: 815-282-1513

www.astro-physics.com

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Roland Christen via groups.io
Sent: Wednesday, September 8, 2021 8:43 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] 47 Tucanae with 155EDF refractor

 

 

his may be an odd question, but can an AP155EDFS be "rebuilt" into an AP155EDF? 

Yes, you simply replace the 2.7" focuser with the 4". 6 screws hold it on. Nothing else needs to be changed.

 

Rolando

 

 

-----Original Message-----
From: Christopher M <mirfak@...>
To: main@ap-gto.groups.io
Sent: Wed, Sep 8, 2021 8:22 pm
Subject: Re: [ap-gto] 47 Tucanae with 155EDF refractor

This may be an odd question, but can an AP155EDFS be "rebuilt" into an AP155EDF?  I believe the lense assembly is the same.  I assume it would require some changes to the OTA tube, possibly baffling (?), and whatever, to accomodate replacement of the smaller focuser to the larger 4" focuser.  I don't have either but I do know someone who has an EDFS.
Christopher


--
Roland Christen
Astro-Physics


Re: 47 Tucanae with 155EDF refractor

 

Christopher, the 4” focuser is no longer available, but our newer 3.5” focuser would be an appropriate replacement. We do not have them in stock at the moment, but they are in production. Click the Notify Me button on the webpage and we will contact you when it is available. The upgrade is very quick and easy.

https://www.astro-physics.com/s35focer-ft

 

 

Clear Skies,

Marj Christen

Astro-Physics

11250 Forest Hills Road

Machesney Park, IL 61115

Phone: 815-282-1513

www.astro-physics.com

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Roland Christen via groups.io
Sent: Wednesday, September 8, 2021 8:43 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] 47 Tucanae with 155EDF refractor

 

 

his may be an odd question, but can an AP155EDFS be "rebuilt" into an AP155EDF? 

Yes, you simply replace the 2.7" focuser with the 4". 6 screws hold it on. Nothing else needs to be changed.

 

Rolando

 

 

-----Original Message-----
From: Christopher M <mirfak@...>
To: main@ap-gto.groups.io
Sent: Wed, Sep 8, 2021 8:22 pm
Subject: Re: [ap-gto] 47 Tucanae with 155EDF refractor

This may be an odd question, but can an AP155EDFS be "rebuilt" into an AP155EDF?  I believe the lense assembly is the same.  I assume it would require some changes to the OTA tube, possibly baffling (?), and whatever, to accomodate replacement of the smaller focuser to the larger 4" focuser.  I don't have either but I do know someone who has an EDFS.
Christopher


--
Roland Christen
Astro-Physics


Re: appm trailing stars at specific DEC

Roland Christen
 

By anyone, you probably mean me. If you have a lot of moment arm on the mount (lots of heavy counterweights far down on the cwt shaft), then you might have a situation where the scope is doing a bit of pendulum motion. Can't tell which axis by your image, but probably RA. You say Dec 50 and 70, but it's probably when the counterweight shaft is near horizontal and the scope is pointing near the meridian. That's the place where all the moments add to give you the least stability and the most moment reaction on the RA axis.

We can tame that, so i can provide you with some specific instructions that you can enter via APCC.

Roland



-----Original Message-----
From: Brian Valente <bvalente@...>
To: main@ap-gto.groups.io
Sent: Thu, Sep 9, 2021 3:25 pm
Subject: [ap-gto] appm trailing stars at specific DEC

Hi everyone

(logs/images at the end of post)

Has anyone else seen this? ideas or suggestions appreciated

Building a model in APPM 1.9.0.1, stars in images are trailing at specific sky areas specifically at DEC 50 and parts of DEC 70

I have a long (to me) 30 second settle time for the mount, and enabled "required high accuracy slews" - still end up with long streaking stars of a consistent distance. 

this example crop is @ 100%
image.png

 
during the settling time, APPM will display "Slew warning". the log shows coordinates oscillating in RA  - example log excerpt at the end of this post

Outside of DEC 50 and 70, model images look fine, round stars, etc.

I even bumped up settle time to 120 seconds, which lessened the number of these, but still see them

Important detail: We switched from CDK17 to CDK20, and went through balancing and polar alignment, etc. It's been suggested that some of our mount parameters may need to be tweaked by AP experts. 


example "Slew Warning" 
0000262 2021-09-01 19:05:06.330:    Warning,    SLEW WARNING, Slew has not reached destination: Target=( 18h 58m 39.41s /  -70° 00' 00.0") -- Mount=( 18h 58m 38.63s /  -70° 00' 00.2")
0000263 2021-09-01 19:05:08.130:    Warning,    SLEW WARNING, Slew has not reached destination: Target=( 18h 58m 39.41s /  -70° 00' 00.0") -- Mount=( 18h 58m 37.49s /  -69° 59' 59.6")
0000264 2021-09-01 19:05:09.725:    Warning,    SLEW WARNING, Slew has not reached destination: Target=( 18h 58m 39.41s /  -70° 00' 00.0") -- Mount=( 18h 58m 38.06s /  -70° 00' 00.3")
0000265 2021-09-01 19:05:11.331:    Warning,    SLEW WARNING, Slew has not reached destination: Target=( 18h 58m 39.41s /  -70° 00' 00.0") -- Mount=( 18h 58m 41.59s /  -70° 00' 00.4")
0000266 2021-09-01 19:05:13.174:    Warning,    SLEW WARNING, Slew has not reached destination: Target=( 18h 58m 39.41s /  -70° 00' 00.0") -- Mount=( 18h 58m 37.37s /  -69° 59' 59.3")
0000267 2021-09-01 19:05:14.794:    Warning,    SLEW WARNING, Slew has not reached destination: Target=( 18h 58m 39.41s /  -70° 00' 00.0") -- Mount=( 18h 58m 38.44s /  -69° 59' 59.7")
0000268 2021-09-01 19:05:16.386:    Warning,    SLEW WARNING, Slew has not reached destination: Target=( 18h 58m 39.41s /  -70° 00' 00.0") -- Mount=( 18h 58m 37.31s /  -69° 59' 59.9")
0000269 2021-09-01 19:05:18.202:    Warning,    SLEW WARNING, Slew has not reached destination: Target=( 18h 58m 39.41s /  -70° 00' 00.0") -- Mount=( 18h 58m 39.33s /  -70° 00' 00.1")
0000270 2021-09-01 19:05:19.804:    Warning,    SLEW WARNING, Slew has not reached destination: Target=( 18h 58m 39.41s /  -70° 00' 00.0") -- Mount=( 18h 58m 38.41s /  -70° 00' 00.1")
0000271 2021-09-01 19:05:21.372:     Severe,    SLEW WARNING, Slew did not reach destination: Target=( 18h 58m 39.41s /  -70° 00' 00.0") -- Mount=( 18h 58m 38.41s /  -70° 00' 00.1")

Image files of entire run (including good and failed fits) and log:

--
Brian 



Brian Valente

--
Roland Christen
Astro-Physics


Re: Which Camera?

Bill Long
 

As soon as my Atik APX60 arrives and I get some test time in I'll share some data. Need to first light a new (to me) toa 150 and it's 67 flattener so that'll be the scope. Mach 2 of course will drive it all.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Roland Christen via groups.io <chris1011@...>
Sent: Thursday, September 9, 2021 1:45 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Which Camera?
 
I have a QSI that I love using. It is robust, extremely well done mechanically and just works. Thus I am interested in the Atik Cmos version which I didn't realize was in production. I don't know much about Moravian, but it looks promising as well.

As far as SBIG, I still have my trusty STL11K which works perfectly (if you ignore the high noise level), and is only a bit clunky mechanically. When used with my 17" F8 astrograph it has provided the highest resolution of any of the scopes I have access to - under 0.8 arc sec FWHM when seeing is perfect.

Rolando

-----Original Message-----
From: Seb@stro <sebastiendore1@...>
To: main@ap-gto.groups.io
Sent: Thu, Sep 9, 2021 3:27 pm
Subject: Re: [ap-gto] Which Camera?

IMO, the fact that ZWO/QHY have the edge on getting new products out at crazy rate / competitive prices comes at the cost of instabilities that usually come along with any brand new fast-to-market line of products. I too have experienced their quirks (guiding with QHY5III-174M, imaging with ASI183MC PRO) but it was no surprise to me as my expectations were set accordingly when I bought them in the first place. Good engineering takes time, research, experimentation, iterations, extensive testing, writing design and support documentation, etc. and that costs money. Did I say that takes time ? That statement generalizes to both hardware and software, of course. 

And add to that the fact that the usual "premium astrocams" companies were mostly all into CDD until very recently and probably had to rethink big portions of their business model, product engineering and manufacturing lines, it's no surprise they are coming up "late" relative to the chinese brands. They probably will have a few things to sort out after initial launch too, but I suspect of least importance.

I usually am not an "early adopter" either (although I did buy a Mach2 from the second run :D ) so I too decided to be patient and wait for the premium, usually more stable products to arrive before pulling the trigger on my next camera purchase. That and to encourage "domestic" enterprises whenever possible... Same logic as for the mount in the end. So I am waiting for SBIG (DL), Moravian, ATIK/QSI, (FLI ?) and the like to come up on the CMOS menu and get reports from "EA" users.

What would greatly simplify choices is if we could buy an AP-GTCAM one day...! ;-)

Sébastien

--
Roland Christen
Astro-Physics


Re: Which Camera?

Roland Christen
 

I have a QSI that I love using. It is robust, extremely well done mechanically and just works. Thus I am interested in the Atik Cmos version which I didn't realize was in production. I don't know much about Moravian, but it looks promising as well.

As far as SBIG, I still have my trusty STL11K which works perfectly (if you ignore the high noise level), and is only a bit clunky mechanically. When used with my 17" F8 astrograph it has provided the highest resolution of any of the scopes I have access to - under 0.8 arc sec FWHM when seeing is perfect.

Rolando

-----Original Message-----
From: Seb@stro <sebastiendore1@...>
To: main@ap-gto.groups.io
Sent: Thu, Sep 9, 2021 3:27 pm
Subject: Re: [ap-gto] Which Camera?

IMO, the fact that ZWO/QHY have the edge on getting new products out at crazy rate / competitive prices comes at the cost of instabilities that usually come along with any brand new fast-to-market line of products. I too have experienced their quirks (guiding with QHY5III-174M, imaging with ASI183MC PRO) but it was no surprise to me as my expectations were set accordingly when I bought them in the first place. Good engineering takes time, research, experimentation, iterations, extensive testing, writing design and support documentation, etc. and that costs money. Did I say that takes time ? That statement generalizes to both hardware and software, of course. 

And add to that the fact that the usual "premium astrocams" companies were mostly all into CDD until very recently and probably had to rethink big portions of their business model, product engineering and manufacturing lines, it's no surprise they are coming up "late" relative to the chinese brands. They probably will have a few things to sort out after initial launch too, but I suspect of least importance.

I usually am not an "early adopter" either (although I did buy a Mach2 from the second run :D ) so I too decided to be patient and wait for the premium, usually more stable products to arrive before pulling the trigger on my next camera purchase. That and to encourage "domestic" enterprises whenever possible... Same logic as for the mount in the end. So I am waiting for SBIG (DL), Moravian, ATIK/QSI, (FLI ?) and the like to come up on the CMOS menu and get reports from "EA" users.

What would greatly simplify choices is if we could buy an AP-GTCAM one day...! ;-)

Sébastien

--
Roland Christen
Astro-Physics


Re: Which Camera?

Sébastien Doré
 

IMO, the fact that ZWO/QHY have the edge on getting new products out at crazy rate / competitive prices comes at the cost of instabilities that usually come along with any brand new fast-to-market line of products. I too have experienced their quirks (guiding with QHY5III-174M, imaging with ASI183MC PRO) but it was no surprise to me as my expectations were set accordingly when I bought them in the first place. Good engineering takes time, research, experimentation, iterations, extensive testing, writing design and support documentation, etc. and that costs money. Did I say that takes time ? That statement generalizes to both hardware and software, of course. 

And add to that the fact that the usual "premium astrocams" companies were mostly all into CDD until very recently and probably had to rethink big portions of their business model, product engineering and manufacturing lines, it's no surprise they are coming up "late" relative to the chinese brands. They probably will have a few things to sort out after initial launch too, but I suspect of least importance.

I usually am not an "early adopter" either (although I did buy a Mach2 from the second run :D ) so I too decided to be patient and wait for the premium, usually more stable products to arrive before pulling the trigger on my next camera purchase. That and to encourage "domestic" enterprises whenever possible... Same logic as for the mount in the end. So I am waiting for SBIG (DL), Moravian, ATIK/QSI, (FLI ?) and the like to come up on the CMOS menu and get reports from "EA" users.

What would greatly simplify choices is if we could buy an AP-GTCAM one day...! ;-)

Sébastien


appm trailing stars at specific DEC

 

Hi everyone

(logs/images at the end of post)

Has anyone else seen this? ideas or suggestions appreciated

Building a model in APPM 1.9.0.1, stars in images are trailing at specific sky areas specifically at DEC 50 and parts of DEC 70

I have a long (to me) 30 second settle time for the mount, and enabled "required high accuracy slews" - still end up with long streaking stars of a consistent distance. 

this example crop is @ 100%
image.png

 
during the settling time, APPM will display "Slew warning". the log shows coordinates oscillating in RA  - example log excerpt at the end of this post

Outside of DEC 50 and 70, model images look fine, round stars, etc.

I even bumped up settle time to 120 seconds, which lessened the number of these, but still see them

Important detail: We switched from CDK17 to CDK20, and went through balancing and polar alignment, etc. It's been suggested that some of our mount parameters may need to be tweaked by AP experts. 


example "Slew Warning" 
0000262 2021-09-01 19:05:06.330:    Warning,    SLEW WARNING, Slew has not reached destination: Target=( 18h 58m 39.41s /  -70° 00' 00.0") -- Mount=( 18h 58m 38.63s /  -70° 00' 00.2")
0000263 2021-09-01 19:05:08.130:    Warning,    SLEW WARNING, Slew has not reached destination: Target=( 18h 58m 39.41s /  -70° 00' 00.0") -- Mount=( 18h 58m 37.49s /  -69° 59' 59.6")
0000264 2021-09-01 19:05:09.725:    Warning,    SLEW WARNING, Slew has not reached destination: Target=( 18h 58m 39.41s /  -70° 00' 00.0") -- Mount=( 18h 58m 38.06s /  -70° 00' 00.3")
0000265 2021-09-01 19:05:11.331:    Warning,    SLEW WARNING, Slew has not reached destination: Target=( 18h 58m 39.41s /  -70° 00' 00.0") -- Mount=( 18h 58m 41.59s /  -70° 00' 00.4")
0000266 2021-09-01 19:05:13.174:    Warning,    SLEW WARNING, Slew has not reached destination: Target=( 18h 58m 39.41s /  -70° 00' 00.0") -- Mount=( 18h 58m 37.37s /  -69° 59' 59.3")
0000267 2021-09-01 19:05:14.794:    Warning,    SLEW WARNING, Slew has not reached destination: Target=( 18h 58m 39.41s /  -70° 00' 00.0") -- Mount=( 18h 58m 38.44s /  -69° 59' 59.7")
0000268 2021-09-01 19:05:16.386:    Warning,    SLEW WARNING, Slew has not reached destination: Target=( 18h 58m 39.41s /  -70° 00' 00.0") -- Mount=( 18h 58m 37.31s /  -69° 59' 59.9")
0000269 2021-09-01 19:05:18.202:    Warning,    SLEW WARNING, Slew has not reached destination: Target=( 18h 58m 39.41s /  -70° 00' 00.0") -- Mount=( 18h 58m 39.33s /  -70° 00' 00.1")
0000270 2021-09-01 19:05:19.804:    Warning,    SLEW WARNING, Slew has not reached destination: Target=( 18h 58m 39.41s /  -70° 00' 00.0") -- Mount=( 18h 58m 38.41s /  -70° 00' 00.1")
0000271 2021-09-01 19:05:21.372:     Severe,    SLEW WARNING, Slew did not reach destination: Target=( 18h 58m 39.41s /  -70° 00' 00.0") -- Mount=( 18h 58m 38.41s /  -70° 00' 00.1")

Image files of entire run (including good and failed fits) and log:

--
Brian 



Brian Valente


Re: Interesting way to image with a cheap mount

Bill Long
 

Yeah that's definitely a thing. I'm of course opposed to such things, but I also am the type that will spend hours working to squeeze every tiny bit of performance from optics and gets OCD about stars in images. To me it's all a part of the learning journey in the hobby. But for some the shortcuts are very compelling.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Roland Christen via groups.io <chris1011@...>
Sent: Thursday, September 9, 2021 12:52 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: [ap-gto] Interesting way to image with a cheap mount
 
I recently saw an image taken with a cheap mount that shows nice tight round stars, even though the mount might have a fair amount of tracking error that bloats the stars and makes them oval during long exposures. How is that possible, you ask?

The idea is to take the images, stack them and remove the stars with software now available. Then take a series of very short RGB exposures, stack them, extract the stars and paste them on the previous long exposures. Presto - you have a premium image with nice tight round stars. And people will point to your image and proclaim that you don't need fancy equipment to get perfect results. Of course the background image is not sharp, but who looks at that when the stars are tiny and round! Nice trick, no?

Rolando

--
Roland Christen
Astro-Physics


Re: Interesting way to image with a cheap mount

Jeff B
 

Actually clever.  Maybe they should run for public office too.


On Thu, Sep 9, 2021 at 3:52 PM Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:
I recently saw an image taken with a cheap mount that shows nice tight round stars, even though the mount might have a fair amount of tracking error that bloats the stars and makes them oval during long exposures. How is that possible, you ask?

The idea is to take the images, stack them and remove the stars with software now available. Then take a series of very short RGB exposures, stack them, extract the stars and paste them on the previous long exposures. Presto - you have a premium image with nice tight round stars. And people will point to your image and proclaim that you don't need fancy equipment to get perfect results. Of course the background image is not sharp, but who looks at that when the stars are tiny and round! Nice trick, no?

Rolando

--
Roland Christen
Astro-Physics


Interesting way to image with a cheap mount

Roland Christen
 

I recently saw an image taken with a cheap mount that shows nice tight round stars, even though the mount might have a fair amount of tracking error that bloats the stars and makes them oval during long exposures. How is that possible, you ask?

The idea is to take the images, stack them and remove the stars with software now available. Then take a series of very short RGB exposures, stack them, extract the stars and paste them on the previous long exposures. Presto - you have a premium image with nice tight round stars. And people will point to your image and proclaim that you don't need fancy equipment to get perfect results. Of course the background image is not sharp, but who looks at that when the stars are tiny and round! Nice trick, no?

Rolando

--
Roland Christen
Astro-Physics


Re: [ap-ug] Hairy Beast

Roland Christen
 

The 10" is an astrograph with 1600mm focal length. No telecompressor is used.

Astrographs, unlike refractors, have one function only - imaging. They are not versatile like refractors, which can be used with Barlows, telecompressors, bino-viewers, etc. This 10" was optimized for imaging in that the optics are quartz, the tube is carbon fiber. This combination eliminates almost all temperature focus issues.

The corrector + mirror + secondary radii are designed so that all wavelengths from 400nm to 700nm have less than 1/10 wave spherical error, something almost impossible in normal telescope designs except for pure mirror scopes. This allows any wavelength to be as sharp as any other and prevents bloating of stars at deep blue-violet wavelengths. It then produces the sharpest possible Luminance images where all the wavelengths contribute to the image.

Roland

-----Original Message-----
From: Chris Cook <chris@...>
To: main@ap-ug.groups.io <main@ap-ug.groups.io>; main@ap-gto.groups.io <main@ap-gto.groups.io>; main@ap-ug.groups.io <main@ap-ug.groups.io>
Sent: Thu, Sep 9, 2021 1:37 pm
Subject: Re: [ap-ug] Hairy Beast

Lots of detail.  Are you using the .67x tc?
 
Chris
 


 
----- Original Message -----
From: Roland Christen via groups.io <chris1011@...>
Reply-To: <main@ap-ug.groups.io>
To: <main@ap-gto.groups.io>, <main@ap-ug.groups.io>
Sent: 9/8/2021 10:16:06 PM
Subject: [ap-ug] Hairy Beast

My project for the last couple of days with the 10" Mak Astrograph.
Looks like a brain coral that needs a haircut. Processing took almost as long as the acquisition of the data.

https://www.astrobin.com/qwcmt6/

--
Roland Christen
Astro-Physics


Re: [ap-ug] Hairy Beast

Chris Cook
 

Lots of detail.  Are you using the .67x tc?
 
Chris
 


 

----- Original Message -----
From: Roland Christen via groups.io <chris1011@...>
Reply-To: <main@ap-ug.groups.io>
To: <main@ap-gto.groups.io>, <main@ap-ug.groups.io>
Sent: 9/8/2021 10:16:06 PM
Subject: [ap-ug] Hairy Beast

My project for the last couple of days with the 10" Mak Astrograph.
Looks like a brain coral that needs a haircut. Processing took almost as long as the acquisition of the data.

https://www.astrobin.com/qwcmt6/


Re: Which Camera?

Christopher Erickson
 

I have an STF-8300M+FW5+OAG+STi setup that, until it got burned up a couple of years ago by an overvoltage event, worked reasonably-well.

The biggest things I liked about it was the generally rock-solid operation (until it got blown up) and the fairly-universal software support.

The biggest things I didn't like about it was the square chassis (I like Hyperstars), power-supply sensitivity and the unreliable FW5 motorization setup. And lack of a high-speed Ethernet port.

Nowadays I have two QHY-174M-GPS CMOS cams that I use primarily for occultations, although I do have a QHY-FW3 and an Orion TOAG so I can put one of them on my 130EDF-GT once in a while.

For a big-chip cam, I am using my Nikon Z6ii, which gives absolutely amazing astro results, for a dSLR. I am never going to ever again bother with Canon cams for casual astro. The Z6ii is amazing.

Of course neither the 174 or the Z6ii can hold a candle to the modern big-chip astro-cameras.

I am probably not going to buy any more SBIG cams.

IMNSHO, ZWO and QHY have the best bang-for-the-buck in big-chip astro-cams, but the models seem to change so fast that it's hard to keep up with them. I would say to just pick one, buy it from a reputable dealer with an established track record of great cam support and service, and don't look back. My next cam will probably come from Tolga.

"My advice is always free and worth every penny!"

-Christopher Erickson
Observatory Engineer
Summit Kinetics
Waikoloa, Hawaii


On Thu, Sep 9, 2021 at 2:46 AM M Hambrick <mhambrick563@...> wrote:
What's the general opinion of SBIG cameras ? They don't seem to have the popularity that they once did, but maybe that is because there are more options. I have seen from their ads that they are starting to offer some cooled CMOS cameras.

I have always felt that the quality of many brands of gear is inversely proportional to how frequently it shows up on the used equipment market, and then how long it stays on the market before it sells. You seldom see Astro-Physics gear on the used market, and when it does show up it usually sells the same day.

Mike


Re: Which Camera?

Sébastien Doré
 

Hello Andrea, 

Looks promising. Please, let us know how your experience turns out.

Sébastien

De : main@ap-gto.groups.io <main@ap-gto.groups.io> de la part de Andrea Lucchetti <andlucchett@...>
Envoyé : 8 septembre 2021 18:45
À : main@ap-gto.groups.io <main@ap-gto.groups.io>
Objet : Re: [ap-gto] Which Camera?
 
I've just received my Moravian C3 61000 pro.IMX455
It is very well built, as the previous 16803 I used to own.
download speed is fantastic.
I kept my 50x50 filters  
I hope to try it soon...


Re: Saturn from Missouri

Jeff B
 

Yes, very nice!  I love seeing the crepe ring in front of the planet.

Jeff

On Thu, Sep 9, 2021 at 11:53 AM Jim Fakatselis <pashasdad@...> wrote:
Great job, excellent image!
Jim


On Sep 9, 2021, at 10:23 AM, midmoastro <teche70@...> wrote:

I had some brief moments of good seeing here in Missouri. This one taken on Sept 6, 2021 with the GSO 12" F/5 riding on the 1100GTO.
<SRGB234.png>


Re: Saturn from Missouri

Jim Fakatselis
 

Great job, excellent image!
Jim


On Sep 9, 2021, at 10:23 AM, midmoastro <teche70@...> wrote:

I had some brief moments of good seeing here in Missouri. This one taken on Sept 6, 2021 with the GSO 12" F/5 riding on the 1100GTO.
<SRGB234.png>


Posidonius with AP 10” Maksutov

thefamily90 Phillips
 


From: jim phillips <thefamily90@...>
Sent: Thursday, September 9, 2021 11:24:46 AM
To: ap-ug@groups.io <ap-ug@groups.io>
Subject: Posidonius with AP 10” Maksutov
 
When I first saw the drawing of the crater Posidonius  by Alika Herring in the March, 1978 cave Astro a catalog (inside back cover) I became very interested in Posidonius, drawing  and imaging it over the years to using many different telescopes. Here is my first drawing of it in 1978 using a 4 inch quantum Maksutov and a more recent image of it using a 10 inch AP Maksutov.

JimP 

Image.jpeg


Re: [ap-ug] Hairy Beast

Roland Christen
 


Also, you seem to have a lot more Ha than OIII
If you mean that I have more Ha exposure, the answer is yes. I have not had enough clear weather to get more OIII yet. Working on it.
I tried some SII, but there is virtually none in the image, so the image consists of just HOO at this point. To get any amount of SII will require at least 1 hour sub exposures, and I don't know if that is worth it.

Roland


-----Original Message-----
From: Clement Elechi <celechi@...>
To: main@ap-gto.groups.io <main@ap-gto.groups.io>; main@ap-ug.groups.io <main@ap-ug.groups.io>
Sent: Thu, Sep 9, 2021 7:13 am
Subject: Re: [ap-gto] [ap-ug] Hairy Beast

Hello, Roland,

That is a wonderful image.  Was it straight HOO or some other palette?  Also, you seem to have a lot more Ha than OIII.  I would have thought the opposite.

Thanks,

Clem

============================

My flickr gallery:


On Wednesday, September 8, 2021, 10:16:13 PM EDT, Roland Christen via groups.io <chris1011@...> wrote:


My project for the last couple of days with the 10" Mak Astrograph.
Looks like a brain coral that needs a haircut. Processing took almost as long as the acquisition of the data.

https://www.astrobin.com/qwcmt6/

--
Roland Christen
Astro-Physics


Re: Saturn with the Mak-cass

thefamily90 Phillips
 

Gorgeous!!


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Roland Christen via groups.io <chris1011@...>
Sent: Wednesday, September 8, 2021 11:46:40 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Saturn with the Mak-cass
 
Ufda! Thumbs up

Rolando



-----Original Message-----
From: dvjbaja <jpgleasonid@...>
To: main@ap-gto.groups.io
Sent: Wed, Sep 8, 2021 10:17 am
Subject: [ap-gto] Saturn with the Mak-cass

A recent look at Saturn from my backyard.  The big Mak is a dream.  

--
Roland Christen
Astro-Physics


Re: Jupiter with the AP Mak Cass

thefamily90 Phillips
 

Awesome indeed!

JimP


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of J. Belden via groups.io <jjb4469@...>
Sent: Wednesday, September 8, 2021 5:41:51 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Jupiter with the AP Mak Cass
 
Yes, pretty awesome I would say. 

Joe B





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