Huge problem with multi filter mosaic with 1.082

So doing a mosaic of narrowband images likely doesn't work like this I think (yet and I didn't try it myself like you're doing so not 100% sure). You should make the panels first of each filter, then making a mosaic of that filter. Do that for every filter and then load those in and save the normalized frames once normalizing is done. Then you can combine them in the RGB Combine tool. Other way is to do this per panel and then loading those in as RGB results and making the mosaic that way.

edit: You mention you did it exactly like this before, so also using narrowband filters etc?

Thanks

I think you didn't understand me

1) Each panel of this 2x2 mosaic is the integrated sum of 100 images or so. Aligned each other, filter by filter. Here, this is 800 images already preprocessed (APP or another software) to get each integrated result plane by plane, filter by filter

2) I put each integrated file (after setting some level difference) in APP, So, here, 8 images (4 Ha + 4 O3)

3) APP select each plane and sort on filter

4) APP analyze all star of all panel and choose a reference (I can modify if not ok)

5) APP align and assemble the full mosaic per filter (here, 1 mosaic of Ha, 1 of O3)

This way got a bug !!! since 1.082 ( I did that before, several time, no real issue)

So I tried to use only 1 filter set and the result is like it should (but in this case, after you assemble the 2 mosaics (Ha, OIII, separately) you need to align again because reference and/or distortion are not the same 

In the past, all was working !

Anyway, I don't understand why the O3 mosaic will get another level if processed among the Ha or alone. APP keeps them independent. Only Ha is used for alignment. No level.

I don't want to assemble RGB or SHO automatically. I want each mosaic monochrome

Cheers

Philippe 

Ah got it, so loading all in in the end and then getting 2x mosaic results per filter. Ok, do you want to send the panels to me? I can verify that then here and report it to Mabula;

Go to https://upload.astropixelprocessor.com and use upload2 as username and upload2 as password.

Create a directory named “ccd2048-mosaicfailure” and upload in there. Thank you!

ps. regarding the different levels, I think if you're normalizing against both at the same time, it'll change the background level to match each other. So doing it separately would still be better in that regard.

thank you very much !

Done !!!

Thanks! Apologies for the delay, life got in the way again. Will download shortly.

Ok, so I looked at it step by step. It worked, but what I did do is to load the Ha frames to session 1 and OIII to session 2. Then at the integrate step I choose to "integrate per session".

hi !

Great. 
Yes, I think the newest parameter (comparing to the past) is "session" (this is what I forgot)

Many thanks !!!

cheers

philippe

Woot! Awesome, glad to help. 🙂