Contains:  Solar system body or event
Sun in Halpha - December 22, 2020 (w/ AR 2794), JDJ

Sun in Halpha - December 22, 2020 (w/ AR 2794)

Acquisition type: Lucky imaging
Sun in Halpha - December 22, 2020 (w/ AR 2794), JDJ

Sun in Halpha - December 22, 2020 (w/ AR 2794)

Acquisition type: Lucky imaging

Equipment

Loading...

Acquisition details

Loading...

Description

The Sun in H-alpha on December 22, 2020 with the new sunspot AR 2794 just coming around the limb and into view.

Imaged with a Lunt LS50Tha, 2.5x Televue Powermate, ZWO ASI290MM. Imaging train was configured to give ~F/18. Image capture using Firecapture (see below for exposure settings). Stacking in AutoStakkert3 (best 25% of 1000 frames). Processed in Registax (wavelet sharpening). Surface and prominence images combined using GIMP.

Surface image:

FPS (avg.)=78

Shutter=0.800ms

Gain=250 (41%)

Histogramm=83%

Comments