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Kokatha man
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Another (better!) Jupiter from ASI120MM cam-150%!
      #5550173 - 12/02/12 11:28 AM Attachment (253 downloads)

Hi again - I've had cloudy weather the last 2 nights so I sat down and did a check through the rgb sets and found at least 2 so far that are better (imho) than the one I posted in my other current thread...

I intend re-processing all the "good 'uns" when I get back home because this (uncalibrated) laptop is quite deficient re processing but I was impressed by a fairly quick processing of this avi, it being 14 minutes after the aforementioned thread's image...and about 40 minutes before Jupiter's culmination.

I say "quick" because I just took the .fits files straight out of Registax and did an rgb combine without any prior deconvolution on each channel beforehand (my usual, preferred practice) and then applied decon to the RGB after combining...

One reason for making this a seperate thread was to give anyone interested some rough guidelines for camera settings on the ASI120MM mono camera: capture and processing are as follows:

Used 512X400 resolution in FireCapture @ 80fps capturing each channel for 60 seconds: 4729 frames captured in each of R,G & B.

Gamma = "50"
Gain R=53, G=53, B=65
Histograms each 81/82%
Exposure = 12.5mS

28 MAPs in AS!2 (26 around disk and one each for GRS and Junior) with 1.5X drizzle, noise robusity 4 and 3000 frames selected out of a smidgen under 4800 frames total in each channel (approximately 52% - 55% of the best frame's quality.)

12 iterations or 0.8 cw Maximum Entropy in AstraImage after rgb combine.....taken as .tif into CS3 and gamma dropped to 0.86, blue levels adjustment to 0.92 on middle slider and a curves adjustment of 195/195 followed by a single application of "Dust & Scratches" which I faded to 28% and then image reduction to 80% for the 120% image, and another on top of this to 85% for the capture scale image.....canvass resized and text added.....finally saved each as .psd's and .png24's.

Down the track a proper full reprocessing and a WinJupos compilation of this and the 2 rgb sets before it!

Edited by Kokatha man (12/02/12 11:09 PM)


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Kokatha man
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Re: Another (better!) Jupiter from ASI120MM camera! new [Re: Kokatha man]
      #5550175 - 12/02/12 11:30 AM Attachment (93 downloads)

.....and the capture scale image.

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Kokatha man
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Re: Another (better!) Jupiter from ASI120MM camera! new [Re: Kokatha man]
      #5550183 - 12/02/12 11:33 AM

.....what I particularly like about this image is that there is an amount of fine detail in the GRS "wake" that was much less defined in the previous rgb capture I posted.

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martus
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Re: Another (better!) Jupiter from ASI120MM camera! new [Re: Kokatha man]
      #5550226 - 12/02/12 12:00 PM

God, it's beautiful, great Darryl!

Regards,
martus


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BKBrown
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Re: Another (better!) Jupiter from ASI120MM camera! new [Re: Kokatha man]
      #5550252 - 12/02/12 12:20 PM

Great results Darryl Looks like that camera can deliver the goods without too much jumping through hoops...how do you think it stacks up for image quality and ease of use against the current run of x618 cams?

Clear Skies,
Brian


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Rankinstudio
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Re: Another (better!) Jupiter from ASI120MM camera! new [Re: BKBrown]
      #5550297 - 12/02/12 12:51 PM

Any idea what the price range on this camera is? Thanks

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lcd1080
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Re: Another (better!) Jupiter from ASI120MM camera! new [Re: Rankinstudio]
      #5550323 - 12/02/12 01:12 PM

Oh my gosh Darryl you didn't need to be in the Northern hemisphere after all, all you needed was that camera and a little time to sort through your data. The results are spectacular for 48.6 degrees elevation.

Pete


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Mick Hyde
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Re: Another (better!) Jupiter from ASI120MM camera! new [Re: lcd1080]
      #5550800 - 12/02/12 06:28 PM

Lovely resolution.

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Kokatha man
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Re: Another (better!) Jupiter from ASI120MM camera! new [Re: Mick Hyde]
      #5550895 - 12/02/12 07:36 PM

Thank you Martus, Brian, David Pete and Mick!

Brian - Sam got me interested when he emailed me a few months back with some pretty telling comparisons between the ASI120MM & DMK618.....and since then it was a marathon effort between Sam, Torsten myself and Emil to get the capture software working smoothly - very mainly due to the efforts of Torsten for FireCapture builds, & Sam for driver improvements!

I gave some pointers elsewhere to what I'd be asking about any new camera purchase - suffice to say I don't think my PGR Flea3 is going to see too much action for now and when Saturn is sufficiently high (very soon!)

David - the ASI120MM sells for a smidgin under $300...!!

I didn't include the R6 settings I used for this process above.....here is the complete rundown of that processing - but of course all images folks take have to be treated individually!!!

I used 512X400 resolution in FireCapture @ 80fps capturing each channel for 60 seconds: 4729 frames captured in each of R,G & B.

Gamma = "50"
Gain R=53, G=53, B=65
Histograms each 81/82%
Exposure = 12.5mS

28 MAPs in AS!2.....26 across the disk of Jove (9, sized 200 & 17 sized 140) and one each for GRS (70) and Junior (40) with 1.5X drizzle, Quality Estimator "Gradient" and noise robusity 4, "Normalize Stack" value 55%.....3000 frames selected out of 4729 frames total in each channel ( this represents including frames down to 52% - 55% of the best frame's quality.)

The resulting .png file dropped into Registax6 and a Histogram stretch range 0-235 with default "smoothness" value.

Wavelets linked and set @ "100" for #1 with a Denoise vale of 0.05 & Sharpen = 0.11.....#2 slider also "100" with Denoise = 0.35 & Sharpen left at the default value "0.10"

12 iterations or 0.8 cw Maximum Entropy in AstraImage after rgb combine.....taken as .tif into CS3 and gamma dropped to 0.86, blue levels adjustment to 0.92 on middle slider and a curves adjustment of 195/195 followed by a single application of "Dust & Scratches" which I faded to 28% and then image reduction to 80% for the 120% image, and another on top of this to 85% for the capture scale image.....canvass resized and text added.....finally saved each as .psd's and .png24's.


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DesertRat
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Re: Another (better!) Jupiter from ASI120MM camera! new [Re: Kokatha man]
      #5550933 - 12/02/12 07:55 PM

Wow! Looks like a N hemi image Darryl! Thats it - you'll be spoiled now until Saturn!

Glenn


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Kokatha man
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Re: Another (better!) Jupiter from ASI120MM camera! new [Re: DesertRat]
      #5551242 - 12/02/12 11:08 PM Attachment (37 downloads)

Quote:

Wow! Looks like a N hemi image Darryl! Thats it - you'll be spoiled now until Saturn!
Glenn




Heh-hee Glenn, Saturn's already up 1.5 hours before the Sun..!

Here's a more orthodox processing for me - decon on each channel before rgb combine in AstraImage.....still on the laptop.....I'll probably wait to do a WinJupos job.


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Kokatha man
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Re: Another (better!) Jupiter from ASI120MM camera! new [Re: Kokatha man]
      #5551256 - 12/02/12 11:15 PM Attachment (44 downloads)

.....or a more "sedate" 120% of capture scale rendition: more befitting of me since I entered my 64th year yesterday!!!

Edited by Kokatha man (12/02/12 11:16 PM)


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joelimite
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Re: Another (better!) Jupiter from ASI120MM camera! new [Re: Kokatha man]
      #5551324 - 12/03/12 12:13 AM

Stunning capture, Kokatha Man! Nicely processed, too!

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wenjha
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Re: Another (better!) Jupiter from ASI120MM camera! new [Re: joelimite]
      #5551469 - 12/03/12 03:29 AM

Very nice!
150% resize supprised us!


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Kokatha man
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Re: Another (better!) Jupiter from ASI120MM camera! new [Re: wenjha]
      #5551533 - 12/03/12 05:25 AM Attachment (54 downloads)

Thanks Joel & Sam - there's still more to be squeezed out of these images as I'm finding out right now in a repro with a slightly different approach (one of the beauties of great data! ) and that's not even thinking about a WinJupos compilation!

Here are the individual channels from this particular RGB image.....as you know Sam, your cameras are especially sensitive in the green spectrum but I don't think the blue channel capabilities are to be sneezed at - and although iR742nM is definitely not at the top of the QE responses I have captured some very nice iR742nM images regardless..!


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martus
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Re: Another (better!) Jupiter from ASI120MM camera! new [Re: Kokatha man]
      #5551542 - 12/03/12 05:54 AM

These fine details are incredible, fantastic images RGB channels ! I like it very much! excellent work Darryl!!

Regards,
martus


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tjensen
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Re: Another (better!) Jupiter from ASI120MM camera! new [Re: martus]
      #5551608 - 12/03/12 07:38 AM

Amazing images. What frame rates are you using? How do you find the sensitivity of the CMOS camera compared to the Flea3?

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Kokatha man
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Re: Another (better!) Jupiter from ASI120MM camera! new [Re: tjensen]
      #5551753 - 12/03/12 10:00 AM

Thank you Martus and Tim.....Tim, 9 posts above I've articulated the "full monty" of processing for this rgb, although the supersized 150% image and the 120% one below it were done the more conventional way with deconvolution applied to each channel before rgb combining in AstraImage.

Whilst preparing the individual channels for the BAA and this thread I happened upon another possibility to draw out more from the image without any compromises...and I want to finish that to see if it lives up to expectations...

I wish I could purchase a cloud filter.....just thrown in the towel waiting for a break, even though intermittently we could see that Jove was revealing some mighty fine details tonight!!!

As to the cameras, I haven't done anything remotely objective re comparing them.....but my gut feeling had me opting for the ASI120MM for all imaging opportunities this week - and I think it paid off..!

Saturn in a few weeks time should give me much more opportunity to properly compare the two cameras.....


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sfugardi
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Re: Another (better!) Jupiter from ASI120MM camera! new [Re: Kokatha man]
      #5551993 - 12/03/12 12:45 PM

Mo, hat's off to you on this beauty! Besides the super high quality, you collected the data at interesting settings, with a rather bright histogram 81-82% but a low gamma 50. I am not sure is 50 means 50% of 1.00 or something else, but the combination of the 2 are impressive. Thanks for posting the images and the method. I saved it and will try it on my new data I get tonight. Excellent work

Regards,
Steve


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Kokatha man
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Re: Another (better!) Jupiter from ASI120MM camera! new [Re: sfugardi]
      #5552648 - 12/03/12 07:23 PM

Quote:

Mo, hat's off to you on this beauty! Besides the super high quality, you collected the data at interesting settings, with a rather bright histogram 81-82% but a low gamma 50. I am not sure is 50 means 50% of 1.00 or something else, but the combination of the 2 are impressive. Thanks for posting the images and the method. I saved it and will try it on my new data I get tonight. Excellent work

Regards,
Steve




Thanks Steve - despite the mostly cloud-affected weather down here I don't feel too bad after collecting these captures...probably a minor miracle for Oz this apparition tbh...

I've shot at around 80% histo's for quite awhile nowadays, anything much more and burnout becomes an issue but going lower can also result in saturation/vibrancy issues for me where you get drab colouration with washed-out appearances.....which I definitely want to avoid because it's well-nigh imposible to correct properly in post-processing - just tipping 80% on the histo seems to achieve a nice balance on these issues...

"Gamma = 50" is a specific ASI120MM/FireCapture value that equates to the conventional "Gamma = 1" or "linearity" which is a standard setting for gamma during capture.....some folks advocate higher gamma settings during capture and others think that is a definite "no-no" - I allways presumed "Default" gamma using the Flea3 was "linearity" but I may be wrong there...

Good luck for tonight's imaging session!


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