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Jupiter w/GRS 2019-06-13

dslr Maksutov planet astrophotography
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#1 BQ Octantis

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Posted 13 June 2019 - 08:40 AM

I had a couple of breaks in the clouds tonight. Here's the first set:

 

wavelets_002-005_derotated_3.3ppAd.jpg

Jupiter w/GRS 2019-06-13 11:56 UTC, 50˚ elevation
Skywatcher 180 (2700mm f/15 Mak-Cass)
12.5mm Kokusai Kohki Fujiyama HD orthoscopic
Canon T3i (stock) LiveView Capture (via AstroDSLR v1.3)
Orion SkyView Pro EQ GoTo Mount (sidereal track)
Aligned, stacked, and sharpened in Lynkeos v2.10
Processed in Photoshop CS5 w/Astronomy Tools v1.6
Scale = 3.3 pixels per Airy disk (λ = 536nm)
Seeing = 3/5, jetstream = 47 m/s
Outback Northern Territory, Australia

 

More tomorrow…

 

BQ


Edited by BQ Octantis, 13 June 2019 - 04:12 PM.

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#2 TareqPhoto

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Posted 13 June 2019 - 07:35 PM

I have same scope, and i can have same like this quality if i keep the size same like this, if i try to crank it to like 600x600 or 800x800 cropped then it is not same quality, or more noisy and not sharp.



#3 BQ Octantis

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Posted 14 June 2019 - 06:18 PM

I have same scope, and i can have same like this quality if i keep the size same like this, if i try to crank it to like 600x600 or 800x800 cropped then it is not same quality, or more noisy and not sharp.

Hi Tareq,

 

Last year I spent a lot of time pondering image scaling , and I came up with pixels per Airy disk (ppAd) as a quantifiable metric.

 

https://www.cloudyni...airy-disk-ppad/

 

My images turn out sharp at Nyuist (2.0 ppAd), but the image is tiny. If I follow the 1 pixel per mm of aperture limit, the result is 2.9 ppAd; but this still seems unnecessarily small:

 

jupiter_ppAds.jpg

 

Aesthetically, the acutance of all my planetary shots (Jupiter, Saturn, and Mars, anyway) falls off between 3.0 and 4.0. Where specifically it drops off depends on seeing and what processing I had to use to overcome it; the one above was at 3.3.

 

Cheers,

BQ



#4 TareqPhoto

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Posted 14 June 2019 - 06:26 PM

Hi Tareq,

 

Last year I spent a lot of time pondering image scaling , and I came up with pixels per Airy disk (ppAd) as a quantifiable metric.

 

https://www.cloudyni...airy-disk-ppad/

 

My images turn out sharp at Nyuist (2.0 ppAd), but the image is tiny. If I follow the 1 pixel per mm of aperture limit, the result is 2.9 ppAd; but this still seems unnecessarily small:

 

attachicon.gif jupiter_ppAds.jpg

 

Aesthetically, the acutance of all my planetary shots (Jupiter, Saturn, and Mars, anyway) falls off between 3.0 and 4.0. Where specifically it drops off depends on seeing and what processing I had to use to overcome it; the one above was at 3.3.

 

Cheers,

BQ

Cool, thank you very much!



#5 BQ Octantis

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Posted 14 June 2019 - 07:07 PM

Here are the results from the second break in the clouds.

 

wavelets_008-010_3.5ppAd.jpg

Jupiter w/GRS 2019-06-13 12:39 UTC, 60˚ elevation
Skywatcher 180 (2700mm f/15 Mak-Cass)
12.5mm Kokusai Kohki Fujiyama HD orthoscopic
Canon T3i (stock) LiveView Capture (via AstroDSLR v1.3)
Orion SkyView Pro EQ GoTo Mount (sidereal track)
Aligned, stacked, and sharpened in Lynkeos v2.10
Processed in Photoshop CS5 w/Astronomy Tools v1.6
Scale = 3.5 pixels per Airy disk (λ = 536nm)
Seeing = 3/5, jetstream = 47 m/s
Outback Northern Territory, Australia

 

BQ


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#6 TareqPhoto

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Posted 14 June 2019 - 07:44 PM

Here are the results from the second break in the clouds.

 

attachicon.gif wavelets_008-010_3.5ppAd.jpg

Jupiter w/GRS 2019-06-13 12:39 UTC, 60˚ elevation
Skywatcher 180 (2700mm f/15 Mak-Cass)
12.5mm Kokusai Kohki Fujiyama HD orthoscopic
Canon T3i (stock) LiveView Capture (via AstroDSLR v1.3)
Orion SkyView Pro EQ GoTo Mount (sidereal track)
Aligned, stacked, and sharpened in Lynkeos v2.10
Processed in Photoshop CS5 w/Astronomy Tools v1.6
Scale = 3.5 pixels per Airy disk (λ = 536nm)
Seeing = 3/5, jetstream = 47 m/s
Outback Northern Territory, Australia

 

BQ

That is nice, thank you very much for sharing!



#7 BQ Octantis

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Posted 16 June 2019 - 04:36 AM

Today I learned…

 

RGB_008-010_3.0ppAd.jpg

Jupiter w/GRS, Reprocessed
Aligned & stacked in Lynkeos v3.1
RGB Processed in Lynkeos & Photoshop CS5 w/

Astronomy Tools v1.6 & Annie's Astro Actions v7.0
Scale = 3.0 pixels per Airy disk (λ = 536nm)

 

…if I process the RGB channels separately, I get a better result.

 

Cheers,

BQ


Edited by BQ Octantis, 16 June 2019 - 04:36 AM.

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#8 Foc

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Posted 16 June 2019 - 05:26 AM

Yes, third version takes the cake!

You do so much work on optimizing your processing. You should to publish a guide sometime that summarizes your processing... 

The ASTRO-Imager's DSLR Canon   ?  laugh.gif



#9 TareqPhoto

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Posted 16 June 2019 - 06:46 AM

Today I learned…

 

attachicon.gif RGB_008-010_3.0ppAd.jpg

Jupiter w/GRS, Reprocessed
Aligned & stacked in Lynkeos v3.1
RGB Processed in Lynkeos & Photoshop CS5 w/

Astronomy Tools v1.6 & Annie's Astro Actions v7.0
Scale = 3.0 pixels per Airy disk (λ = 536nm)

 

…if I process the RGB channels separately, I get a better result.

 

Cheers,

BQ

Well done!



#10 BQ Octantis

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Posted 16 June 2019 - 08:10 AM

Well done!

Thanks, Tareq.

 

 

Yes, third version takes the cake!

You do so much work on optimizing your processing. You should to publish a guide sometime that summarizes your processing... 

The ASTRO-Imager's DSLR Canon   ?  laugh.gif

Ha! Your "third image" comment was echoing in my mind as I posted this…I even considered posting "This one's for you, Foc!" I spend a lot of time optimizing because I only get 8.6 fps from my T3i through AstroDSLR. The guide would be "Astro-imaging on a Shoestring Budget"…or something along those lines…

 

BQ



#11 Tulloch

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Posted 16 June 2019 - 10:54 PM

 

Ha! Your "third image" comment was echoing in my mind as I posted this…I even considered posting "This one's for you, Foc!" I spend a lot of time optimizing because I only get 8.6 fps from my T3i through AstroDSLR. The guide would be "Astro-imaging on a Shoestring Budget"…or something along those lines…

 

BQ

8.6 fps!! And to think I thought I was hard done by going at 20 fps with my 700D (under Windows of course).

 

It seems that every part of your setup is conspiring against you, your laptop/camera throughput is low, the standard processing software doesn't run on Mac computers, even your orthoscopic capture technique is non-standard, yet you are still able to pull these images through the system. 

 

I understand the appeal of taking a unique approach to making these images, after all, why produce the same images with the same equipment running the same software as everyone else?

 

Keep up the good work!

 

Andrew



#12 BQ Octantis

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Posted 17 June 2019 - 03:19 AM

8.6 fps!! And to think I thought I was hard done by going at 20 fps with my 700D (under Windows of course).

 

It seems that every part of your setup is conspiring against you, your laptop/camera throughput is low, the standard processing software doesn't run on Mac computers, even your orthoscopic capture technique is non-standard, yet you are still able to pull these images through the system. 

 

I understand the appeal of taking a unique approach to making these images, after all, why produce the same images with the same equipment running the same software as everyone else?

 

Keep up the good work!

Cheers, mate! I have to admit, I've learned more about protocols, formats, and algorithms from using non-standard software and hardware than I ever would have just following well-trodden paths. But the most significant things conspiring against me are my aperture size (180mm) and living under the jet stream's primary path across Australia (at 100-140 kts). Well, that plus and I'm cheap and lazy…

 

BQ


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#13 troyt

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Posted 17 June 2019 - 04:34 AM

good images




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