- Exposure time: 150 minutes (15x
600s)
- Processing: Nebulosity (pre-processing, stacking & DDP); Adobe
Photoshop CS4 (post-processing)
- Lens/telescope: Takahashi FSQ-106ED (4.2")
quadruplet ED refractor at f/3.6
- Camera: QHY8 one-shot colour
CCD (gain: 0, offset: 115)
- Mount: Astro-Physics Mach1 GTO
- Guidescope: Vixen 70/400 mm +
ST-4
- SQM: 21.15 magnitude per square
arcsecond
- Location: Etoile St. Cyrice, Hautes-Alpes, France
- Date: January 10 - 11, 2010
- Notes:
Although
the ambient temperature was -10 degrees Celsius, the mount and
electronics worked flawlessly. A flat frame of 0.25s was made with a
homemade lightbox.
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