Ha Sky
Taken by Sighard Schräbler on September 1, 2021 @
Karben, Hessen, Germany
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Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
Aperture: Unavailable
ISO: Unavailable
Date Taken: 2021:09:01 23:44:17
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Details:
The Ha Sky is full of marvels unseen by the human eye. With light pollution increasing, narrow band imaging is a way to continue with the hobby.
Details: Here I tried the brand new 8mm f-3.5 Samyang CS II Fisheye lens combined with the QSI583ws cold camera and the fine Astrodon 5nm Ha-Filter. Just fife images at 10 minutes. Post processing in Pixinsight with cosmetic correction in batch_pre, solving for coordinates, DBE + HT, then continued in Affinity Photo with starless processing. Just separate frequencies, denoise the low frequency background and apply some clarity. Annotation in Pixinsight again. For calibration I had tons of darks and bias frames but just a fake-flat with value 0.5 all over the frame.
Photographer's website:
https://www.sternwarte-hofheim.de/galerie/schraebler/
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