Celestial hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  Horsehead nebula  ·  IC 431  ·  IC 432  ·  IC 434  ·  IC 435  ·  NGC 2023  ·  NGC 2024  ·  The star Alnitak (ζOri)
Horsehead in H alpha, Marc
Horsehead in H alpha
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Horsehead in H alpha

Horsehead in H alpha, Marc
Horsehead in H alpha
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Horsehead in H alpha

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Description

"First light" of my new QHY163m (not technically first light, but this is the first image where the working distance was nearly correct). I was pretty blown away by what I was able to get from just 5 frames...

The artifact around Alnitak is apparently a known issue for these cameras (including ASI1600) and is supposedly caused by the cover plate on the chip. Seems to also depend a lot on the imaging train, filters etc. For 10min subs, I can live with it - probably fixable in photoshop.

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Horsehead in H alpha, Marc