|
|
|
Optics | TEC 140 |
Focal Length |
1011 mm |
Focal Ratio | f/7.2 |
Exposure Time | Total 46 h 40 min, composed of Ha 43 h, RGB 70:60:90 min (single exp of 30 min for Ha, 10 min for RGB) |
CCD | SBIG STL-11000M @-35°C and -40°C |
Location | Bogli (PC, Italian Apennines) at 1350 m height - for 6h of Ha and all RGB Tradate (VA, Po Valley) at 305 m height - for 37 h of Ha |
Date |
29-30 December 2013 (from Bogli) 2-3-4-5-6-7-8 December 2013 (from Tradate) |
Mount | Gemini
G-41 (from Bogli) Schmidth fork mount (from Tradate) |
Tracking | Lodestar
on an 80mm f/5 refractor |
Temperature and humidity | T= -2 to -5 °C, RH=100% (from Bogli) T= -1 to +3 °C, RH=100% (from Tradate) |
Sky brightness at zenith (with SQM-L) | 21.1 mag/arcsec^2 (from Bogli) from 18.8 to 19.6 mag/arcsec^2 (from Tradate) |
Notes | First trial of mixing home and mountain exposures with this setup. |
|