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Ca-H full disc of Sept. 13th
Posted: Thu Sep 13, 2018 10:21 am
by krakatoa1883
Just a full disc today, there is little to see on the chromosphere and nothing on the photosphere apart some facular zones. I noticed some prominences in calcium light but sky is hazy today and images would be too noisy. I also add an image of AR12721 taken on Sept. 10th before the group lost all of its spots.
After some tests I decided not to use anymore of IMPPG for processing calcium images, I have the impression that it likely generates small scale artifacts, for the below image I used of IRIS instead.
Re: Ca-H full disc of Sept. 13th
Posted: Thu Sep 13, 2018 11:15 am
by Montana
I agree, I don't use IMPGG for CaK either. I have never really settled on what I like but AstraImage is what I usually turn to. I find IMPGG seems to create tiny dots which I am not sure is correct. I try to study the video as close as I can, then try and replicate what you see in processing, the eye never lies and is usually the best judge.
These are excellent photos
Alexandra
Re: Ca-H full disc of Sept. 13th
Posted: Thu Sep 13, 2018 11:20 am
by ffellah
Lovely images, Raf
Franco
Re: Ca-H full disc of Sept. 13th
Posted: Thu Sep 13, 2018 9:11 pm
by p_zetner
Nice images, Raf.
I agree about ImPPG. I'm always worried it leaves small scale artifacts with CaK. I use ImagesPlus .. very slow but, I think, more reliable deconvolution.
Cheers.
Peter
Re: Ca-H full disc of Sept. 13th
Posted: Fri Sep 14, 2018 5:34 pm
by krakatoa1883
Thanks everyone.
I never used ImagesPlus, I'll try, thanks Peter for your suggestion.
Re: Ca-H full disc of Sept. 13th
Posted: Sat Sep 15, 2018 5:47 pm
by eroel
Raf:
Beautiful images.
Regards,
Eric.
Re: Ca-H full disc of Sept. 13th
Posted: Sun Sep 16, 2018 7:55 pm
by marktownley
Good shots Raf!