Date   

Re: SH2-171 on Mach2 and new Moravian c3 61000 Pro (Sony IMX 455)

Andrea Lucchetti
 
Edited

Eric, 
I used to own their G16803 for about 7 years so I think I know very well Moravian.
the C3 camera I have now has an exetrnal filter wheel , 5 position 50x50mm.
I decided to stick to my moravian filter set from the previous camera and opted for that FW.
if you will decide, I suggest to consider a smaller set but 7 positions: i think my wheel (medium size) can get 7 2 inches round filters.
This camera is a monster with narrow band, and you could like to have O3 and ha.
The camera is very well built, usb 3, fast download time (2x2 is less than one second).
It is not like the FLI proline, but it is about 2.8kg with filter wheel.
don't expect any of the low cost cameras issues: cooling issues, tilting, etc.
they work as advertised

The software package is maintained and sees several updates during the year to support new cameras or features.
They have native drivers for skyx, driver for linux, indi,ascom.
At present they don't have a native driver for NINA ( I requested this) but the Ascom one works just fine.
For people living in Europe support is also very easy, no need for complex custom declarations when you send the camera for maintenance or repair.
Support is great: during the years they helped me to update the electronics till that was possible.

Please let me know if you need specific info and I'll try to answer

Andrea







Re: Is this tilt in the image train?

Tom Blahovici
 

The camera is a full frame ASI6200.
As to going back to Takahashi, that's always a pain from up here in Canada.  From what I have heard it could be a few weeks or months if it has to go to Japan.


Re: Some APCC mis-information on Cloudy Nights

Andrew J
 

Hi Karen.


Great news that Tech Videos are in the works. A little birdy told me that Liam was working on a Video demonstrating the steps to re-grease a mount. I have been eagerly awaiting the Premier as I have a Mach1 that is need of a tune up after sitting out in the Texas heat for 5 years in my backyard observatory. 

One thought about video production, maybe the guys at 
The Astro Imaging Channel would be willing to help? TAIC is always looking for presenters, so maybe they could trade some production experience in exchange for AP doing the Premier on TAIC, with a Q&A session after each video. I think it would be very popular for the many current and future AP mount owners out there. If you are really courageous you could clean and regrease a mount LIVE!!!

 

Andrew J


Re: Is this tilt in the image train?

Bill Long
 

If no reducer is being used, that's a scope that needs to go back to Takahashi for collimation adjustments IMO.  While they're could be some tilt, it would need to be insanely large to cause that much error in the field.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Tom Blahovici <tom.va2fsq@...>
Sent: Monday, September 27, 2021 12:20 PM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: [ap-gto] Is this tilt in the image train?
 

[Edited Message Follows]

Hi
Now that I have my new AP1100, I am seeing the starts in their true shapes.  Gone are the guiding issues and so on with the new APPM models.
So, this is the first image taken as a test unguided at 5 minutes.  I took the same image with the autoguider running and it made no corrections.

Does this looks like tilt?  In your experience is it? CCDInspector shows a tilt in the direction from lower left to upper right.
It appears to come from before the focuser since the image changes with a 180 degree shift in the camera rotation.

I have tilt adapters both before the focuser (Moonlight nightcrawler) and after.
The telescope is that notorious FSQ106, the telescope plagued with this type of issue.



Thanks, Tom


Re: Reflection in image

Robert Chozick <rchozick@...>
 

I just reread the other mail that he sent. I thought he meant extend the secondary out but now I understand extend the secondary baffle. 

Robert 


On Sep 27, 2021, at 2:34 PM, Robert Chozick via groups.io <rchozick@...> wrote:

Thanks Roland. Someone had already suggested to me that it could be a need for extension of the secondary by about half an inch. I have used the scope many times and this is the first time this is happened. I think there was a bright star nearby. The iris is close to one of the main stars in Cepheus.   

Robert 


On Sep 27, 2021, at 1:14 PM, Brian Valente <bvalente@...> wrote:


you might try extending the baffle a few inches (or experiment) and see if you can eliminate it?

I had a similar issue on my cdk20. After I isolated the cause using paper baffle extensions, my solution was to 3d print a baffle extension and attach it 

Problem gone. 

Brian


On Mon, Sep 27, 2021 at 10:55 AM Emilio J. Robau, P.E. <ejr@...> wrote:
Robert,

I have been fighting the same thing on my 12"GSO RC for years.   I have a truss system.   If you find a remedy, please let me know.  Recently I placed protostar flock on the tube portion of the scope to make it even darker, but I doubt it will help.  It seems to happen when my scope is pointed between 10 degrees and 30 or so degrees, and is less frequent when I am pointed more towards the zenith.  I think it also happens when there is a bright star nearby.



--
Brian 



Brian Valente


Re: Reflection in image

 

Please keep us posted Emilio

I have 2 GSO RCs, they are mostly sitting in the corner, but I may be inspired to re-energize them!

On Mon, Sep 27, 2021 at 12:31 PM Emilio J. Robau, P.E. <ejr@...> wrote:
Maybe this will put an end to the GSO discussions.   I did some searching.  Teleskop Service sells a baffle addition for the stock baffle sold on GSO RCs which were shown to have light leaks around the secondary baffle and produce similar artifacts to what I experienced and what Robert is experiencing.  It is called a light shade baffle and they make them for several size scopes.  Apparently the issue was detected back in 2017 by a gentleman named Knute H. Shaffner and in collaboration with Teleskop Service TS started making the baffles.  I am ordering one for my 12" GSO and I suppose I could experiment an extension to the baffle, but that would take some time and time is money and is better spent under clear skies.

Thanks Rolando for the diagnosis and the rest of the gang for chiming in.  I hope this cures the very annoying artifact I have lived with for a while.  I admit, I do like my poor man's RC.  Hopefully I will like it even more for now and until I can upgrade.



--
Brian 



Brian Valente


Re: Reflection in image

Robert Chozick <rchozick@...>
 

Thanks Roland. Someone had already suggested to me that it could be a need for extension of the secondary by about half an inch. I have used the scope many times and this is the first time this is happened. I think there was a bright star nearby. The iris is close to one of the main stars in Cepheus.   

Robert 


On Sep 27, 2021, at 1:14 PM, Brian Valente <bvalente@...> wrote:


you might try extending the baffle a few inches (or experiment) and see if you can eliminate it?

I had a similar issue on my cdk20. After I isolated the cause using paper baffle extensions, my solution was to 3d print a baffle extension and attach it 

Problem gone. 

Brian


On Mon, Sep 27, 2021 at 10:55 AM Emilio J. Robau, P.E. <ejr@...> wrote:
Robert,

I have been fighting the same thing on my 12"GSO RC for years.   I have a truss system.   If you find a remedy, please let me know.  Recently I placed protostar flock on the tube portion of the scope to make it even darker, but I doubt it will help.  It seems to happen when my scope is pointed between 10 degrees and 30 or so degrees, and is less frequent when I am pointed more towards the zenith.  I think it also happens when there is a bright star nearby.



--
Brian 



Brian Valente


Re: Reflection in image

Emilio J. Robau, P.E.
 

Maybe this will put an end to the GSO discussions.   I did some searching.  Teleskop Service sells a baffle addition for the stock baffle sold on GSO RCs which were shown to have light leaks around the secondary baffle and produce similar artifacts to what I experienced and what Robert is experiencing.  It is called a light shade baffle and they make them for several size scopes.  Apparently the issue was detected back in 2017 by a gentleman named Knute H. Shaffner and in collaboration with Teleskop Service TS started making the baffles.  I am ordering one for my 12" GSO and I suppose I could experiment an extension to the baffle, but that would take some time and time is money and is better spent under clear skies.

Thanks Rolando for the diagnosis and the rest of the gang for chiming in.  I hope this cures the very annoying artifact I have lived with for a while.  I admit, I do like my poor man's RC.  Hopefully I will like it even more for now and until I can upgrade.


Re: Is this tilt in the image train?

Dean Jacobsen
 

What camera was used?
--
Dean Jacobsen
Astrobin Image Gallery - https://www.astrobin.com/users/deanjacobsen/


Re: SH2-171 on Mach2 and new Moravian c3 61000 Pro (Sony IMX 455)

Eric Weiner
 

Very nice Andrea. I’d be very interested hearing more about your new camera as you get more time with it. I have been seriously considering it for my next purchase. Did you go with the Moravian CFW? Any additional info or experience you have with their camera and accessories will be greatly appreciated.

Eric


Is this tilt in the image train?

Tom Blahovici
 
Edited

Hi
Now that I have my new AP1100, I am seeing the starts in their true shapes.  Gone are the guiding issues and so on with the new APPM models.
So, this is the first image taken as a test unguided at 5 minutes.  I took the same image with the autoguider running and it made no corrections.

Does this looks like tilt?  In your experience is it? CCDInspector shows a tilt in the direction from lower left to upper right.
It appears to come from before the focuser since the image changes with a 180 degree shift in the camera rotation.

I have tilt adapters both before the focuser (Moonlight nightcrawler) and after.
The telescope is that notorious FSQ106, the telescope plagued with this type of issue.



Thanks, Tom


Re: Reflection in image

Andrea Lucchetti
 

yes, it can always happen. 
fully agree with the approach.


SH2-171 on Mach2 and new Moravian c3 61000 Pro (Sony IMX 455)

Andrea Lucchetti
 
Edited

Hi,
as we had some discussions around the new Sony Cmos and Moravian cameras, I am attaching my first image using the combo Mach2 and Moravian C3.

After a number of issues and under a poor sky , I've finally managed to take the image.
LRGB bin 2x2, 12x300s per channel
200mm f 3.9( 4.5 corrected) self built newton telescope
Mount AP Mach2
C3 61000 pro, gain=0
acquisition in NINA: very poor guiding as it was the very first time for me with PHD2
processing in Pixinsight

Compared to the 16803 ccd, this sony sensor has greater dynamic thanks to minimal read noise.
in 2x2, it has better resolution than the 16803 and same Mpixel count.
in 2x2 has a full well of 200k.
I find it very good for RGB and should amazing in narrow band at gain= 2750.
the camera tilting plate works well, and ccd seems very well aligned (I didn't need to play with tilt)
the cooling is effective but not impressive: I achieved -43 deg @95% power. temperature was indeed very stable even at this high power level.

this is the link to the image.
https://andrealucchetti.smugmug.com/What-is-new/i-vStTQ56/A

Andrea


Re: Reflection in image

Bill Long
 

John Hayes reported something similar with the baffle on his 20" CDK. IIRC they sent him a newly designed one.


From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Andrea Lucchetti <andlucchett@...>
Sent: Monday, September 27, 2021 11:38 AM
To: main@ap-gto.groups.io <main@ap-gto.groups.io>
Subject: Re: [ap-gto] Reflection in image
 
Wow, 
a telescope like the CDK20 can have a baffling issue?
I can understand the problem in lesser telescope but in the PW CDK is very strange, no?
you should propose them your retrofit kit :-)
Andrea


Re: Reflection in image

 

>>>a telescope like the CDK20 can have a baffling issue?

Yeah, but I don't want to get into any bashing here

I think they recently changed their baffle design, and it turns out there were some issues.

we did send them the feedback and generally Planewave has been great about it, and our hosting partner Obstech has been extremely good at diagnostics and interim fixes.

As with a lot of things astronomical, i find it works better when i approach it as a partnership


Brian


On Mon, Sep 27, 2021 at 11:39 AM Andrea Lucchetti <andlucchett@...> wrote:
Wow, 
a telescope like the CDK20 can have a baffling issue?
I can understand the problem in lesser telescope but in the PW CDK is very strange, no?
you should propose them your retrofit kit :-)
Andrea



--
Brian 



Brian Valente


Re: Reflection in image

Andrea Lucchetti
 

Wow, 
a telescope like the CDK20 can have a baffling issue?
I can understand the problem in lesser telescope but in the PW CDK is very strange, no?
you should propose them your retrofit kit :-)
Andrea


Re: What does GTO stand for in A-P mounts (i.e. A-P1100GTO)

Dean Jacobsen
 

On Mon, Sep 27, 2021 at 06:24 AM, fernandorivera3 wrote:
What about:
Great
To
Own??
That’s probably it.
 
--
Dean Jacobsen
Astrobin Image Gallery - https://www.astrobin.com/users/deanjacobsen/


Re: Reflection in image

Emilio J. Robau, P.E.
 

I don't want to goober up the AP list too much, and I do own an AP1600 upon which the scope sits, so reference to the baffle leak article would help my baffling artifact.  


Re: Reflection in image

Stone, Jack G
 

There were some articles written on the 12” when it was first released.

One of which was a baffle leak – I tried to google it but to no avail.  But it was reported both in the US and UK predominantly –

Also was the mirror support design – there were modifications as well, seems as though there were some distortions.

There were other mentions as well – If anyone has any references to these articles – would be appreciated.

 

 

 

From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Brian Valente
Sent: Monday, September 27, 2021 11:14 AM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Reflection in image

 

you might try extending the baffle a few inches (or experiment) and see if you can eliminate it?

 

I had a similar issue on my cdk20. After I isolated the cause using paper baffle extensions, my solution was to 3d print a baffle extension and attach it 

 

Problem gone. 

 

Brian

 

On Mon, Sep 27, 2021 at 10:55 AM Emilio J. Robau, P.E. <ejr@...> wrote:

Robert,

I have been fighting the same thing on my 12"GSO RC for years.   I have a truss system.   If you find a remedy, please let me know.  Recently I placed protostar flock on the tube portion of the scope to make it even darker, but I doubt it will help.  It seems to happen when my scope is pointed between 10 degrees and 30 or so degrees, and is less frequent when I am pointed more towards the zenith.  I think it also happens when there is a bright star nearby.


 

--

Brian 

 

 

 

Brian Valente


Re: Reflection in image

 

you might try extending the baffle a few inches (or experiment) and see if you can eliminate it?

I had a similar issue on my cdk20. After I isolated the cause using paper baffle extensions, my solution was to 3d print a baffle extension and attach it 

Problem gone. 

Brian


On Mon, Sep 27, 2021 at 10:55 AM Emilio J. Robau, P.E. <ejr@...> wrote:
Robert,

I have been fighting the same thing on my 12"GSO RC for years.   I have a truss system.   If you find a remedy, please let me know.  Recently I placed protostar flock on the tube portion of the scope to make it even darker, but I doubt it will help.  It seems to happen when my scope is pointed between 10 degrees and 30 or so degrees, and is less frequent when I am pointed more towards the zenith.  I think it also happens when there is a bright star nearby.



--
Brian 



Brian Valente

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