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Optics | TEC 140 |
Focal Length |
1011 mm |
Focal Ratio | f/7.2 |
Exposure Time | Total 7 h, composed of Ha-LRGB 180:70:20:20:20 min (single exp of 30 min for Ha, 10 min for LRGB) |
CCD | SBIG STL-11000M @-30°C |
Location | Colle del Nivolet (AO, Italian Alps) at 2630 m height |
Date |
10-11 July 2015 |
Mount | Gemini
G-41 |
Tracking | Lodestar
on an 80mm f/5 refractor |
Temperature and humidity | T= +8 °C, RH=70 % |
Sky brightness at zenith (with SQM-L) | 21.3-21.5 mag/arcsec^2 |
Notes | First night was great while imaging LRGB, but the second one was partially ruined by veils during the H-alpha imaging session. |
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