Contains:  Solar system body or event
Sun in Halpha with AR2773 - September 23, 2020, JDJ

Sun in Halpha with AR2773 - September 23, 2020

Acquisition type: Lucky imaging
Sun in Halpha with AR2773 - September 23, 2020, JDJ

Sun in Halpha with AR2773 - September 23, 2020

Acquisition type: Lucky imaging

Equipment

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Acquisition details

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Description

The Sun in H-alpha on September 21, 2020. I was able to catch the new active region AR2773 on the last sunny day before a string of upcoming cloudy days...

Imaged with a Lunt LS50Tha, 2x Celestron barlow, ZWO ASI290MM. Imaging train was configured to give ~F/14. 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.)=80

Shutter=0.500ms

Gain=250 (41%)

Histogramm=89%

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