Saturday, 25 August 2018

H-alpha Sun with a DMK 37AUX273 and AstroDMx Capture for Linux

A DMK 37AUX273 camera was mounted at the prime focus of a Solarmax ll, 60, BF15 H-alpha scope, mounted on an iOptron Cube Pro, AZ GOTO mount.


AstroDMx Capture for Linux was used to capture two overlapping 1000 frame 8 bit SER files, which were Stacked in Autostakkert! 3.1, stitched in Microsoft ICE and wavelet processed in Registax 5.1, all running in Wine. The final image was post processed and colourised in the Gimp 2.10.


The Sun in H-alpha light


Active regions 2719 and 2720 are clearly visible as is a large filament.

Full size



The camera had sufficient dynamic range to be able to capture both disk and prominence details. The stitched image was duplicated and one image processed for the disk and the other processed for the prominences. The two images were then combined in the Gimp 2.1 to give the image presented here.

It is clear that this is a good camera for H-alpha solar imaging and was able to deliver over 60 fps whilst imaging at maximum resolution.