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| Optics | TEC 140 |
| Focal Length |
1011 mm |
| Focal Ratio | f/7.2 |
| Exposure Time | Total 9 h, composed of Ha-RGB 390:40:40:70 min (single exp of 30 min for Ha, 10 min for RGB) |
| CCD | SBIG STL-11000M @-40°C |
| Location | Pian dell'Armà (PV, Italian Apennines) at 1350 m height Capanne di Cosola (AL, Italian Apennines) at 1500 m height |
| Date |
27-28 December 2014 24 January 2015 |
| Mount | Gemini
G-41 |
| Tracking | Lodestar
on an 80mm f/5 refractor |
| Temperature and humidity | T= -9 °C, RH=(70-90) % T= -3 °C, RH=80 % |
| Sky brightness at zenith (with SQM-L) | 21.2 mag/arcsec^2 21.15 mag/arcsec^2 |
| Notes | Three
nights, the first two mainly focused on H-alpha imaging and with a
little RGB, the latter one month later with only RGB. Unfortunately the
latter was ruined by veils and so the RGB total exposure was limited. |
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