* click on image for larger view *
- Description: The Dark Shark is a patch of dark nebula also known as LDN1235, located in the constellation of Cepheus.
It is a patch of dust and cold gas, a dark nebula, with a few patches of blue reflection nebula. These are VdB150 (upper) and
VdB149 (lower). There is also a small spiral galaxy behind the nebula, catalogue numbers PGC67671 and UGC11861, about 64
million light-years distant. The Shark is located about 650 light-years away. This photo was shot under the dark skies at the Southern Alberta
Star Party near the Cypress Hills in S.E. Alberta.
- Camera: ZWO ASI2600MM Pro at -15C, gain 100
- Filter: Antlia LRGB filters
- Scope: Askar SQA55, 264mm f4.8
- Mount: ZWO AM5N
- Exposure: 8 x 10 minutes RGB, 12 x 10 minutes for Luminance, 6 hours total.
- Guiding: ASI210MM via ZWO OAG
- System Control: ASI Air+
- Location: near Elkwater, Alberta
- Date: September 24 2025
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