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Saturn ADC at 39 deg alt - 6" SCT

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#1 sallariccia

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Posted 07 October 2024 - 02:58 PM

Hi CN Family,

 

I hope you are all well.

 

My latest attempt at Saturn with my 6 in SCT

 

Tech:

 

Location, Date and Time::

Somerville, MA, 5-Oct-24, 10:51PM DST (near Boston)

2024-10-06-0250_1-U-G-Saturn_lapl5_ap51_conv.jpg

 

Tech:

 

Optics: Celestron NexStar 6SE, with Edmund basic var. Barlow set at approx. 1.5x. approx. system f/15. No ADC
Camera: QHY5III485C

Software:

 

Capture: FireCapture 20,000 frames captured, 15,000 frames stacked, 10ms exp. 50% gain, 10:51 PM DST , 5-Oct-24, 39.3 deg alt

 

Processing: AutoStakkert!, Registax, Picasa

 

Your comments and Suggestions are appreciated.

 

My Best,

 

Sal smile.gif


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#2 Tulloch

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Posted 07 October 2024 - 03:35 PM

Nice work, but it is still overprocessed imho. Can you please post your stacked image straight out of AutoStakkert (without any other processing applied) into your CN Gallery and provide a link? Then we can try processing it which might help your processing skills.

 

You might also want to try stacking less frames, say 50% of your frames, 75% is a bit high. FYI, I tend to stack 7500 frames when I'm imaging Saturn unless the seeing is excellent.

 

Thanks, Andrew



#3 Borodog

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Posted 07 October 2024 - 03:49 PM

Nice work, but it is still overprocessed imho. Can you please post your stacked image straight out of AutoStakkert (without any other processing applied) into your CN Gallery and provide a link? Then we can try processing it which might help your processing skills.

 

You might also want to try stacking less frames, say 50% of your frames, 75% is a bit high. FYI, I tend to stack 7500 frames when I'm imaging Saturn unless the seeing is excellent.

 

Thanks, Andrew

I think this will be both seeing and aperture dependent. When the seeing is good, I often stack 75-80%, and that's with an 11" scope. Smaller apertures are less subject to the seeing, and can stack more frames than a larger aperture, all else being equal (e.g. sampling ratio).


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#4 Tulloch

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Posted 07 October 2024 - 03:54 PM

I think this will be both seeing and aperture dependent. When the seeing is good, I often stack 75-80%, and that's with an 11" scope. Smaller apertures are less subject to the seeing, and can stack more frames than a larger aperture, all else being equal (e.g. sampling ratio).

Maybe, but I think it's still worth trying. Stacking bad frames is never a good idea.


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#5 Borodog

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Posted 07 October 2024 - 09:52 PM

It all depends on the graph and the absolute Quality scores.
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#6 sallariccia

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Posted 08 October 2024 - 02:41 PM

Nice work, but it is still overprocessed imho. Can you please post your stacked image straight out of AutoStakkert (without any other processing applied) into your CN Gallery and provide a link? Then we can try processing it which might help your processing skills.

 

You might also want to try stacking less frames, say 50% of your frames, 75% is a bit high. FYI, I tend to stack 7500 frames when I'm imaging Saturn unless the seeing is excellent.

 

Thanks, Andrew

Here's my AutoStakkert! tif files fom the 50% bucket - tif only2024-10-06-0250_1-U-G-Saturn_lapl5_ap51_conv.jpg


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#7 Tulloch

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Posted 08 October 2024 - 03:31 PM

Here's my AutoStakkert! tif files fom the 50% bucket - tif onlyattachicon.gif 2024-10-06-0250_1-U-G-Saturn_lapl5_ap51_conv.jpg

Thanks Sal, but this image is a jpg file, and it's been sharpened in AutoStakkert (note the "conv" suffix on the filename). It's not possible to sharpen the 8 bit jpg successfully.

 

Please post the 16 bpp tiff file (note that CN only accepts tiff files with the suffix .tiff, not *.tif) into your "Gallery", it will be too large to post in the thread. Your Gallery can be accessed using the button on the top right of the webpage

 

 CN My Gallery.jpg

 

You can then add a link to the Gallery image in your thread.

 

Thanks again,

 

Andrew


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#8 azure1961p

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Posted 09 October 2024 - 11:52 AM

Nice image and thru a hot SCT!

 

Pete


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#9 azure1961p

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Posted 09 October 2024 - 11:57 AM

<p>I did some fidgeting with it in an app but your processing got the most contrast - as you know.&nbsp; You lose too much when you try to brighten it. At any rate a detailed take&nbsp;</p>
<p>&nbsp;</p>
<p>Pete</p>

#10 FloP

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Posted 09 October 2024 - 01:31 PM

How do you expose in firecapture ? Try to increase the gain so your histogram reach 65-70% for the brightest color channel.

Here's my AutoStakkert! tif files fom the 50% bucket - tif onlyattachicon.gif 2024-10-06-0250_1-U-G-Saturn_lapl5_ap51_conv.jpg




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