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  #1  
Old 29-07-2015, 12:08 AM
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MGTechDVP (Mariusz)
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Saturn through Skyris 618C

Hi All,

Just sharing my results from tonight. Once again I was lucky enough to have very clear skies. I was observing Saturn through my 8SE and I kept on pushing the magnification to beyond the 450X mark and beyond with perfect views.

With the 5mm eyepiece and the TV 11mm type 6 + 2.5X powermate the view was amazing... crisp and detailed. I thought I'd be stupid and put the 5mm and a 2X barlow to see what will happen, and even though the image was quite soft, Saturn was MASSIVE... of course that was 810X... but to my surprise I was still able to make out a brightish cloud band and the cassini division.

With such a steady atmosphere I had to try to image it and I think these Saturn images are the cleanest I captured so far, so I thought I'd share.

Work flow was I imaged the F20 pic through a Celestron 2X Barlow and the Skyris 618C CCD, and the F50 image was captured using the DMK 21au618 and a 5X powermate. The mono F50 image was used as luminance on the color data scaled up which was captured with the Skyris. I'm very surprised at the quality of planets I'm getting with the Skyris for a OSC camera.
Image processing was done done in PS, Stacking in Autostakkert and a very small amount of wavelets applied in registax 6.

I suspect I'm pushing my 8" SCT to the limit, or close to it, but if anyone has any advise or tips on how to squeeze out and more detail, please share. One feature I was chasing for over a year now was the Encke gap, I feel like I'm right on the verge of capturing it but perhaps my mirror is just slightly too small for it.

Thanks for looking...
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  #2  
Old 21-11-2017, 09:58 PM
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04Stefan07 (Stefan)
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Oh wow that is fantastic!

I got such a crappy image from my 618C through my 8" SCT (maybe because Saturn was low in the sky and with bad light polution).

May I ask what capturing software you used and how many frames per second you get?

I get very low FPS the higher the exposure goes so I contacted the dudes who make the camera who helped me flash the camera with new firmware but didn't change anything. They were saying that this camera only works with a particular Windows USB driver.

Thanks!
Stefan.
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  #3  
Old 22-11-2017, 11:19 AM
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lazjen (Chris)
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Very well done, and thanks for the write up on what you did to get the result!
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  #4  
Old 22-11-2017, 02:05 PM
bigjoe (Joe)
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Lovely images Mariusz.Esp first one.

Were all becoming a bit blase about these wonderful images nowdays.

Look at how the cameras are improving every year or so.
Cheers bigjoe
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  #5  
Old 23-11-2017, 11:49 AM
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Troy
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Good photo's
Saturn's is always a challenge for a telescope under 10"

Cheers
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  #6  
Old 04-12-2017, 05:24 PM
issdaol (Phil)
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Quote:
Originally Posted by Troy View Post
Good photo's
Saturn's is always a challenge for a telescope under 10"

Cheers
Great photos

What do you mean that Saturn is a challenge for scopes under 10" ??

This year we had a couple of nights of excellent medium to high power visuals of Saturn in TSA120, TEC200 and TOA150 which showed significant detail, colour and banding.

On later nights with the same scopes the views were horrid.

So I would suggest its more seeing related than anything to do with a 10" + scope.
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  #7  
Old 04-12-2017, 06:11 PM
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LewisM
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Quote:
Originally Posted by Troy View Post
Good photo's
Saturn's is always a challenge for a telescope under 10"

Cheers
Nope. Have no issue seeing fantastic detail in a 120mm refractor - seen Encke’s Minima quite a few times, distinct polar banding etc.

In fact, Saturn isn’t an issue in my TSA-102 when the seeing is good.

WORST Saturn I have ever seen was through a 14” Celesteon SCT when the refractors were showing a good image of it.
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  #8  
Old 04-12-2017, 07:05 PM
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Nikolas (Nik)
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Quote:
Originally Posted by Troy View Post
Good photo's
Saturn's is always a challenge for a telescope under 10"

Cheers
ReLLY???????
I've had decent results with a 5 inch refractor
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  #9  
Old 05-12-2017, 09:05 AM
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Paul Haese
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I think you chaps who do visual are missing Troy's point here. He is more than likely talking about imaging which is a whole different kettle of fish to visual work. The focal lengths involved in imaging range from 8 metres to 12 metres. An 8" scope will struggle with those focal lengths to produce a bright, well exposed and detailed imaging free of artefacts.

Try looking through a refractor at those focal length and there will be a similar related views. At low powers in my C14 on good nights it can be a visual delight and would challenge any refractor. Thermal equilibrium is vital for large scopes and of course seeing is king with any viewing of the planets.
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  #10  
Old 05-12-2017, 07:48 PM
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Troy
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>>>>"What do you mean that Saturn is a challenge for scopes under 10" ??"

Paul has already answered it

Every time when I imaged Saturn with my old C9.25 scope I wished I had a bigger scope for a brighter image and higher frame rates. If you have a monochrome camera you will really notice this in the blue channel

Last edited by Troy; 05-12-2017 at 08:01 PM.
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  #11  
Old 05-12-2017, 10:36 PM
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RobF (Rob)
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Beautiful image. Wonderful to see an 8" scope delivering such an outstanding pic.
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  #12  
Old 06-12-2017, 02:58 PM
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Nikolas (Nik)
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Imaged with both the 5 inch triple and the c9.25 and got very good results
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