How to download and process JWST raw data

In this video I will show you how I process JWST raw data. Hope you find it usefull and I wish you clear skies.
Music:
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[@nikhilanand2183]

Nice Explanation, Please Zoom in your screen while recording and you were using photoshop for stacking?

[@stefan_astro]

Thanks for the tip! I will try zooming in next time. About stacking: You don't have to stack any of the JWST data as the files you download are already stacked by NASA.

[@AttemptingAstro]

Nicely done

[@stefan_astro]

Thank you!

[@swayamtirlotkar9377]

thank you so much

[@dyda9117]

Where did you get/how can I make those RGB fit files??

[@stefan_astro]

The data from JWST you download is monochrome. So black and white. You can create colour by combining multiple monochrome image. As I do at: 5:50
Hope this helps.

[@knapz665]

Hi there. Could you explain why you download six filters but only use three in Siril?

[@stefan_astro]

Great question! So basically if you wanted to use the other 3 filters in the image you would have to take some extra steps. For example combining them using pixelmath. I thought I wouldn't go through this cause it makes the video more complicated than it already is.
Hope that explains it. If you have further questions please feel free to ask!

[@mattriley6283]

Hello Stefan, I was wondering if it would be possible for you to create some torrent files for the data the scripts downloaded, it seems the host is down and i am unable to get them i want to download all the raw data in chunks script by script, then reshare it from my home server so other people can get it that way as the MAST site is a bit slow and unwieldy...

[@stefan_astro]

I'm sorry but I don't understand what you mean by torrent files. Also I already deleted the data the script downloaded as it took up too much space on my computer. Great initiative tho! And thank you for commenting.

[@mattriley6283]

@@stefan_astro Don't worry about it, IL see if I can work something out at my end, thanks for the video and for the reply.

[@Groumphh]

Great vid, but I can't replicate the Register process : I don't have any of the options after "Registration Layer", it asks me to select an area in the images to register and when I click on the "Go register" button, the console returns the error : "Starting element number less than 1" just before crashing. Do you have any idea how to fix it ?

[@stefan_astro]

That's very strange. I sadly have no clue what could be causing it. I also don't understand why it asks you to select an area. Hope you find a fix tho!

[@Groumphh]

@@stefan_astro I did two things :
- first I reinstalled SiriL (wanted to have a reason to do it but I was just hopeless)
- second I selected a smaller area when registering (about 1/40th of the total image size)
and it worked !
sadly I did the two things simultaneously, so I can't really tell you what did the trick.
I'm really glad it finally worked, thank you a lot for the video, again !

[@stefan_astro]

@@Groumphh I'm glad you fixed it! Also thank you for letting me know what did the trick.

[@swayamtirlotkar9377]

same here

[@md.naimislamtalukder8516]

Great video but i have a problem. After finishing all process properly final image is shown black. i have no photoshop but have ERDAS IMAGINE. what is the problem?

[@stefan_astro]

I have no previous experience with ERDAS, however a possible cause for your problem could be that you saved the final image in 32 bits instead of 16. Which results in a dark image