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The Sun in CaK line, April 06, 2024, 08:58

The Sun in CaK line, April 06, 2024, 08:58
The Sun in CaK line, April 06, 2024, 08:58

Equipment:
-Levenhuk Ra R66 ED Doublet Black telescope
-Sky-Watcher AZ-GTi mount
-Lacerta Herschel prism
-Antlia CaK 3nm 393.3nm filter
-ND96-09 filter
-QHY5III178m camera
Stacking of 100 frames.
I also managed to reliably get the prominences through the Antlia CaK calcium filter. To pull out the prominences, you need to shoot with a significant overexposure of the disk. It is also better to set the black level (offset) to the highest value. To reduce artifacts, you can also shoot a dark frame.

Initial processing stage:

The Sun in CaK line, April 06, 2024, 09:00
The Sun in CaK line, April 06, 2024, 09:00
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