Combine disc and prom stacking
- Jordan Konisky
- Im an EXPERT!
- Posts: 356
- Joined: Thu Apr 18, 2019 12:08 am
- Location: Verona, Wisconsin
- Has thanked: 386 times
- Been thanked: 270 times
Combine disc and prom stacking
I have seen reference to a Stephen Ramsdem post on this forum in which he describes image processing steps in which he combines stacking of solar disc images with stacking of prom images. I have spent some time searching for this post but have come up empty. Can anyone direct me to it? Any other comments on such a process would be appreciated.
JordanK
JordanK
Jordan -
SkyWatcher ED100 Refractor with Diamond Steeltrack Crawford Focuser
Celestron CG4 Equatorial Mount
Daystar Quark H-Alpha Chromosphere
Lunt CaK B1800 Filter Module
Lunt White Light Solar Wedge
ZWO ASI174MM, ZWOASI1600MM Cameras
SkyWatcher ED100 Refractor with Diamond Steeltrack Crawford Focuser
Celestron CG4 Equatorial Mount
Daystar Quark H-Alpha Chromosphere
Lunt CaK B1800 Filter Module
Lunt White Light Solar Wedge
ZWO ASI174MM, ZWOASI1600MM Cameras
- Bob Yoesle
- Almost There...
- Posts: 996
- Joined: Thu Mar 08, 2012 7:24 pm
- Has thanked: 541 times
- Been thanked: 811 times
Re: Combine disc and prom stacking
I use a double stacked filter system and processing which makes this unnecessary.
But even with a single stacked etalon and single exposure with the proper dynamic range it becomes unnecessary.
Otherwise you can you use your favorite photo-manipulation software to cut and paste, or otherwise blend, a disc exposure onto a prominence exposure. But this usually creates a discontinuity at the limb. Some resort to using a negative disc image to get rid of this discontinuity. To me both results are inferior to using a properly exposed and processed image to get a better and more accurate result - especially for prominences that cross the limb (filaproms).
But even with a single stacked etalon and single exposure with the proper dynamic range it becomes unnecessary.
Otherwise you can you use your favorite photo-manipulation software to cut and paste, or otherwise blend, a disc exposure onto a prominence exposure. But this usually creates a discontinuity at the limb. Some resort to using a negative disc image to get rid of this discontinuity. To me both results are inferior to using a properly exposed and processed image to get a better and more accurate result - especially for prominences that cross the limb (filaproms).
Diagonally parked in a parallel universe.
Curiosity is the father of knowledge; uncertainty is the mother of wisdom.
Dark-Sky Defenders
Goldendale Observatory
Curiosity is the father of knowledge; uncertainty is the mother of wisdom.
Dark-Sky Defenders
Goldendale Observatory
- Montana
- Librarian
- Posts: 34722
- Joined: Mon Oct 17, 2011 5:25 pm
- Location: Cheshire, UK
- Has thanked: 17974 times
- Been thanked: 8907 times
Re: Combine disc and prom stacking
I agree with Bob, I have tried many blending techniques and can spend an hour on it, then I discard it and go for the natural image and use that instead. I prefer to set the parameters at capture which enable a single shot. Again, this is why I prefer double stacking as it helps to bring the dynamic range more equal between surface and prom. I also use shadows&highlights in Photoshop to bring out the prom detail.
Alexandra
Alexandra
- Montana
- Librarian
- Posts: 34722
- Joined: Mon Oct 17, 2011 5:25 pm
- Location: Cheshire, UK
- Has thanked: 17974 times
- Been thanked: 8907 times
Re: Combine disc and prom stacking
Do you mean this one? viewtopic.php?f=7&t=13884
I just looked down the list in the Solar Reference Library.
Alexandra
I just looked down the list in the Solar Reference Library.
Alexandra
- MAURITS
- Way More Fun to Share It!!
- Posts: 8617
- Joined: Tue Nov 27, 2018 4:37 pm
- Location: Belgium
- Has thanked: 2464 times
- Been thanked: 4880 times
- Contact:
Re: Combine disc and prom stacking
Alexandra, do you mean one recording (capture) where you have both, in the processing surface and proms.Montana wrote: ↑Wed Mar 24, 2021 10:29 am I agree with Bob, I have tried many blending techniques and can spend an hour on it, then I discard it and go for the natural image and use that instead. I prefer to set the parameters at capture which enable a single shot. Again, this is why I prefer double stacking as it helps to bring the dynamic range more equal between surface and prom. I also use shadows&highlights in Photoshop to bring out the prom detail.
Alexandra
- Montana
- Librarian
- Posts: 34722
- Joined: Mon Oct 17, 2011 5:25 pm
- Location: Cheshire, UK
- Has thanked: 17974 times
- Been thanked: 8907 times
Re: Combine disc and prom stacking
Yes, recording just one capture then processing the image for surface and prom. It is not always possible though if the prom is exceedingly weak but bright ones are certainly possible
https://www.flickr.com/photos/alexandra ... 535769289/
I process the surface as you would do normally, then click 'shadows and highlights' in Photoshop and the prom jumps out.
Alexandra
https://www.flickr.com/photos/alexandra ... 535769289/
I process the surface as you would do normally, then click 'shadows and highlights' in Photoshop and the prom jumps out.
Alexandra
- rsfoto
- Way More Fun to Share It!!
- Posts: 6312
- Joined: Mon Jun 18, 2012 8:30 pm
- Location: San Luis Potosi, México
- Has thanked: 9733 times
- Been thanked: 5775 times
Re: Combine disc and prom stacking
It would be easily possible if the authors of the software would implement what I have in the Lucam Recorder software e.g.Montana wrote: ↑Thu Mar 25, 2021 8:13 am Yes, recording just one capture then processing the image for surface and prom. It is not always possible though if the prom is exceedingly weak but bright ones are certainly possible
https://www.flickr.com/photos/alexandra ... 535769289/
I process the surface as you would do normally, then click 'shadows and highlights' in Photoshop and the prom jumps out.
Alexandra
Apply in real time a false colour mask ... by simulating a monochrome image to be a colour image = RGB and then adjust the colour palette in different ways ...
So far none of the known software packages is able to do it ... only Lucam Recorder but unfortunately the author of Lucam Recorder stopped the development ...
regards Rainer
Observatorio Real de 14
San Luis Potosi Mexico
North 22° West 101°
Observatorio Real de 14
San Luis Potosi Mexico
North 22° West 101°
- DeepSolar64
- Way More Fun to Share It!!
- Posts: 19071
- Joined: Thu Sep 05, 2019 12:19 am
- Location: Lowndesville S.C.
- Has thanked: 17855 times
- Been thanked: 17003 times
Re: Combine disc and prom stacking
I so wish the program author would have not stopped supporting it.
Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "
- Jordan Konisky
- Im an EXPERT!
- Posts: 356
- Joined: Thu Apr 18, 2019 12:08 am
- Location: Verona, Wisconsin
- Has thanked: 386 times
- Been thanked: 270 times
Re: Combine disc and prom stacking
Alexandra et al
I have been using GIMP (free) for my photo processing, but am ready to throw in the towel and succumb to Photoshop. Has been silly of me to complain about the subscription pricing considering all that I have spent on my solar hardware. Thanks to all of you for posting on this thread. As always, you have all been so constructive and helpful.
Jordan
I have been using GIMP (free) for my photo processing, but am ready to throw in the towel and succumb to Photoshop. Has been silly of me to complain about the subscription pricing considering all that I have spent on my solar hardware. Thanks to all of you for posting on this thread. As always, you have all been so constructive and helpful.
Jordan
Jordan -
SkyWatcher ED100 Refractor with Diamond Steeltrack Crawford Focuser
Celestron CG4 Equatorial Mount
Daystar Quark H-Alpha Chromosphere
Lunt CaK B1800 Filter Module
Lunt White Light Solar Wedge
ZWO ASI174MM, ZWOASI1600MM Cameras
SkyWatcher ED100 Refractor with Diamond Steeltrack Crawford Focuser
Celestron CG4 Equatorial Mount
Daystar Quark H-Alpha Chromosphere
Lunt CaK B1800 Filter Module
Lunt White Light Solar Wedge
ZWO ASI174MM, ZWOASI1600MM Cameras
- Bob Yoesle
- Almost There...
- Posts: 996
- Joined: Thu Mar 08, 2012 7:24 pm
- Has thanked: 541 times
- Been thanked: 811 times
Re: Combine disc and prom stacking
Diagonally parked in a parallel universe.
Curiosity is the father of knowledge; uncertainty is the mother of wisdom.
Dark-Sky Defenders
Goldendale Observatory
Curiosity is the father of knowledge; uncertainty is the mother of wisdom.
Dark-Sky Defenders
Goldendale Observatory
- AJamesB
- Im an EXPERT!
- Posts: 373
- Joined: Thu Jan 30, 2020 9:21 pm
- Location: Maui, Hawaii
- Has thanked: 1154 times
- Been thanked: 630 times
Re: Combine disc and prom stacking
Its not a cheap program, but Pixinsight is great for doing one shot captures. I expose the disc as far right as possible without clipping in my video capture software, ensure I'm using the highest bit depth my camera has, then take the single capture of video. It gets sharpened, then in pixinsight you can do a range selection (to create a mask that covers the disc) with a bit of softness (softness avoids a harsh edge and tapers the mask), use that mask to mask off the main disc, and then use 'masked stretch' to bring out even quite faint prominences in the dark areas around the main disc.
If I rush it, you can just tell a slight difference in the transition area, such as with this image: https://i.redd.it/r6h42mslxie51.jpg
But if I try a few variations of the range mask and softness level, its not hard to get a near seemless transition in just a couple minutes, such as in this image: https://i.imgur.com/ZWoE4Xx.jpg
It works well for full disc images as well: https://i.imgur.com/F1xyeJF.jpg
Doing single image stretching for both also has the benefit of having both disc and proms visible when doing animations: https://i.redd.it/dbqh0mqrrzw51.gif
And that's just on a single stacked etalon. I imagine it would work even better if, like others, one was doublestacked and had less dynamic range between the faintest of the faint and the brightest of the brightest.
If I rush it, you can just tell a slight difference in the transition area, such as with this image: https://i.redd.it/r6h42mslxie51.jpg
But if I try a few variations of the range mask and softness level, its not hard to get a near seemless transition in just a couple minutes, such as in this image: https://i.imgur.com/ZWoE4Xx.jpg
It works well for full disc images as well: https://i.imgur.com/F1xyeJF.jpg
Doing single image stretching for both also has the benefit of having both disc and proms visible when doing animations: https://i.redd.it/dbqh0mqrrzw51.gif
And that's just on a single stacked etalon. I imagine it would work even better if, like others, one was doublestacked and had less dynamic range between the faintest of the faint and the brightest of the brightest.
Lunt ls100tha single stacked + hinode solar guider on ioptron cem26 mount
asi178mm
asi294mm
2x, 3x, and 4x telecentrics
0.6x and 0.4x telecompressors
asi178mm
asi294mm
2x, 3x, and 4x telecentrics
0.6x and 0.4x telecompressors
-
- Way More Fun to Share It!!
- Posts: 6871
- Joined: Mon May 18, 2020 4:45 pm
- Location: Essex, S.E.England
- Been thanked: 4900 times
Re: Combine disc and prom stacking
PaintShopPro, PaintShopPro, PaintShopPro.
I have said it so many times and why buy a Rolls Royce for a shopping-trip, when an old-banger will do the same thing, and saving you the dosh for better things.
I have tried PS in past-years, but for the minute price of a one-time purchase/licence for PaintShopPro - compared to PS extracting your dosh whenever and regularly. That is my way of saving for both the scopes and all that goes with them, as well as the other expensive-things I have bought or done of many years...
Correctly as Bob has just said and to look at that Review / https://uk.pcmag.com/photo-editing/4540 ... ntshop-pro could well save you zillions of bucks over a long time - without loosing any real features too...
That is not advertising, rather is a fact...
But then, what do I know...
Terry
I have said it so many times and why buy a Rolls Royce for a shopping-trip, when an old-banger will do the same thing, and saving you the dosh for better things.
I have tried PS in past-years, but for the minute price of a one-time purchase/licence for PaintShopPro - compared to PS extracting your dosh whenever and regularly. That is my way of saving for both the scopes and all that goes with them, as well as the other expensive-things I have bought or done of many years...
Correctly as Bob has just said and to look at that Review / https://uk.pcmag.com/photo-editing/4540 ... ntshop-pro could well save you zillions of bucks over a long time - without loosing any real features too...
That is not advertising, rather is a fact...
But then, what do I know...
Terry
- MalVeauX
- Way More Fun to Share It!!
- Posts: 1862
- Joined: Tue May 09, 2017 7:58 pm
- Location: Florida
- Has thanked: 1188 times
- Been thanked: 1384 times
Re: Combine disc and prom stacking
Hi Jordan,Jordan Konisky wrote: ↑Tue Mar 23, 2021 7:18 pm I have seen reference to a Stephen Ramsdem post on this forum in which he describes image processing steps in which he combines stacking of solar disc images with stacking of prom images. I have spent some time searching for this post but have come up empty. Can anyone direct me to it? Any other comments on such a process would be appreciated.
JordanK
Here's video tutorials, each under 20 minutes, of how to do everything from acquisition to processing with a single exposure:
Acquisition (focus, flats, histogram, etc):
https://youtu.be/M7rSOXWQDZM
Processing (single exposure):
https://youtu.be/RJvJEoVS0oU
Very best,
- DeepSolar64
- Way More Fun to Share It!!
- Posts: 19071
- Joined: Thu Sep 05, 2019 12:19 am
- Location: Lowndesville S.C.
- Has thanked: 17855 times
- Been thanked: 17003 times
Re: Combine disc and prom stacking
EGRAY_OBSERVATORY wrote: ↑Fri Mar 26, 2021 2:03 am PaintShopPro, PaintShopPro, PaintShopPro.
I have said it so many times and why buy a Rolls Royce for a shopping-trip, when an old-banger will do the same thing, and saving you the dosh for better things.
I have tried PS in past-years, but for the minute price of a one-time purchase/licence for PaintShopPro - compared to PS extracting your dosh whenever and regularly. That is my way of saving for both the scopes and all that goes with them, as well as the other expensive-things I have bought or done of many years...
Correctly as Bob has just said and to look at that Review / https://uk.pcmag.com/photo-editing/4540 ... ntshop-pro could well save you zillions of bucks over a long time - without loosing any real features too...
That is not advertising, rather is a fact...
But then, what do I know...
Terry
Another good one is GIMP. It's free, open-sourced and also is a worthwhile alternative to Adobe PhotoShop. And it works on the Ubuntu build of Linux without using Wine!
Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "
- Bob Yoesle
- Almost There...
- Posts: 996
- Joined: Thu Mar 08, 2012 7:24 pm
- Has thanked: 541 times
- Been thanked: 811 times
Re: Combine disc and prom stacking
I believe Jordan stated he's using GIMP and wants to use something different:
I have been using GIMP (free) for my photo processing, but am ready to throw in the towel and succumb to Photoshop.
Diagonally parked in a parallel universe.
Curiosity is the father of knowledge; uncertainty is the mother of wisdom.
Dark-Sky Defenders
Goldendale Observatory
Curiosity is the father of knowledge; uncertainty is the mother of wisdom.
Dark-Sky Defenders
Goldendale Observatory
-
- Way More Fun to Share It!!
- Posts: 6871
- Joined: Mon May 18, 2020 4:45 pm
- Location: Essex, S.E.England
- Been thanked: 4900 times
Re: Combine disc and prom stacking
I agree with the GIMP comments, as is a very useful tool too, as are some others too.
All worth trying to decide which are the best for the purpose required.
Terry
All worth trying to decide which are the best for the purpose required.
Terry
- DeepSolar64
- Way More Fun to Share It!!
- Posts: 19071
- Joined: Thu Sep 05, 2019 12:19 am
- Location: Lowndesville S.C.
- Has thanked: 17855 times
- Been thanked: 17003 times
Re: Combine disc and prom stacking
Bob Yoesle wrote: ↑Fri Mar 26, 2021 6:47 am I believe Jordan stated he's using GIMP and wants to use something different:
I have been using GIMP (free) for my photo processing, but am ready to throw in the towel and succumb to Photoshop.
I'm lame! Somehow I missed that. While GIMP is good I would still agree that PhotoShop is better. It's been the reference standard for many years. In my opinion PS is a bit easier to use.
Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "