Astrophotography panaromas aka Mosaics using free software - Siril + Sirilic + ICE
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- Опубліковано 21 сер 2024
- When the object you want to image is just too big, one way of imaging it still, is to make use of mosaics. This is actually pretty easy, using free software.
Links to the software:
Siril can be found on siril.org
Sirilic can be downloaded from here:
gitlab.com/fre...
Read the instructions before downloading, so you get the correct one and know how to use it.
Microsoft ICE is no longer actively developed nor supported by Microsoft. In order to download it, we now depend on websites that archived it.
image-composit...
#asiairpro #asiairplus #zwo #optolong #ioptron #cem40 #celestron #edgehd #williamoptics #gt81 #siril #astrophotography #astronomy
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Edited in #Shotcut www.shotcut.org/ - Наука та технологія
Thanks for finding my video! I will add follow-up videos detailing alternatives to mosaic stitching. Suggestions are welcome!
I am the author of sirilic. For your information, I've just added platesolving (automatic image flip) with software version 1.15.7.
Thank you! I saw your message on gitlab indeed. I will test it out as soon as I am able (now on a laptop-less holiday)
bonjour n'arrive pas a télécharger votre lien je clic dessus il ne se passe rien
@@deffkilla8260 Hi there. I don't know which link it is you cannot click. The one of Sirilic should get you to the gitlab website which in turn has some links to the downloadable files. Read the instructions carefully. gitlab.com/free-astro/sirilic/-/wikis/home
I have been thinking about doing a mosaic with my Seestar. This is inspiring me to give it a go. Thanks!
I guess mosaics with the SeeStar can become somewhat challenging in regard to the framing. You don't have full freedom in how your orientation of the Field Of View is, so you might end up needing to shoot lots of overlap. Curious what you'll produce! Clear Skies!
@@KopLamp Yeah, I figure it might end up being a challenge. But I won't know until I try it. Hopefully in a few days once we get some clear skies.
Thanks!
Nice one Martin! This is something I need to learn to do someday.
Go for it! As I mentioned in the video, I am looking into how to further use the scripting engine to my advantage in Mosaics. Also I am really hoping that the Siril feature around this topic is going to turn out to be awesome!
Really nice walkthrough, Martin. Thank you. I’ve been planning my first mosaic and need to consider creating the composite, however, I am processing on Mac. As I’ve been reading, Lightroom may be an option for me. Cheers!
I’ve also done mosaicking in Photoshop successfully, but that is not considered free software 😅
Another potential good tool to consider is Hugin.
@@KopLamp oh, Hugin is one I’ve not run across before in my researching. Thanks, I will look for it!
Hi Martin, I hope you are well. I was just revisiting your video since I am approaching finishing up initial capture of my first 4 mosaic panels. I was curious, are you handling your calibration frames for multiple nights on panels the same way as you do for multi-night on normal single-frame panel? Also, I’ve seen in your workflow that you are using your master calibration frames in sirilic. Is there a benefit of this over stacking calibration frames within the same processing run?
Thank you!
@@AstroAF Thanks for your question! Calibration I do the same way as multiple sessions on the same target indeed. Of course the flats need to be matching the lights.
Regarding the use of masters... I only do that for my darks and flats. That is because I have a library of darks for different exposure times. Flats also sometimes have masters already stored as I generally am lazy and don't shoot flats every session.
The only benefit is time as I don't have to stack all those darks flats over and over again. That also saves up on HDD storage space ;-)
Hi Martin,
Funny how in the first seconds I already recognized a fellow dutchie XD. For everyone else I'll ask my question in English.
I'm currenty shooting a 3 panel mosaic of NGC 1333 with my ASI 294MM pro. I'm planning on having at least 25 subs for each RGB channel. After which I want to stick them all together to create a single big mosaic.
My question is, what would be the best work flow? Last year I did a 2 panel DSLR mosaic of m31 in a PixInsight trial, which worked flawlessly. But I have no idea what would be the best way to do it with mono data in SiriL.
Ofcourse I would start with stacking the data from every filter together, but what would the next step be? Do I stretch and edit every mono filter, make a RGB version of that panel than use ICE. Or would I stretch it, use ICE to create the mosaic and then make the RGB version? I think that doing ICE in between stretching and RGB would cause problems with alignment later.
Another problem with these work flows would be that it is really difficult to have the same stretch across (3 panels * 3 filters) 9 different files. You mentioned something about creating a SiriL script which does the stretching. I have never used scripting in SiriL so would something like that be difficult to do? Or would it be better to stack the files, use ICE than stretch and RGB composite? NGC1333 has a lot of faint dust (I really like the image from Justin Tolboe), so I think that it would require a bit more processing than doing a simple auto strech. Thanks in advance
NGC1333 is a beautiful target! The question you ask is a tough one indeed. You might have noticed I only shot Ha data in my Cygnus mosaic. That is partly why.
Siril will get a mosaic function at some point but doesn’t have it yet. AstroPixelProcessor does, but it is a payed software. You noticed I am Dutch so I can imagine you prefer free solutions too 😅
I would probably make stacks of each filter. Then combine it into an RGB stack and then give it only a slight stretch. I think an AsinH stretch would be the best to be consistently reproducible over all panels of the mosaic.
You need to have just enough stars visible for ICE to able to do its work.
Once a stitch is complete I would load it back into Siril and do final stretching on it.
Perfekt!
Thanks!
After it is stiched, can i return to siril to work on the single stiched image?
Yes you can.