Technical Data
|
Optics |
TEC 140
|
Focal Length
|
1011 mm
|
Focal
Ratio |
f/7.2
|
Exposure
Time |
Total 10 h 40 min, composed of Ha 8 h 30 min, RGB 40:40:50 min
(single exp of 30 min for Ha, 10 min for RGB) |
CCD |
SBIG STL-11000M @-30°C
|
Location |
Colle dell'Agnello (CN, Italian Alps) at 2700 m height
|
Date
|
28-29 August 2014 (two nights)
|
Mount |
Gemini
G-41
|
Tracking |
Lodestar
on an 80mm f/5 refractor
|
Temperature
and
humidity |
T= +7 °C, RH=80%
|
Sky brightness at
zenith (with SQM-L) |
21.4 mag/arcsec^2
|
Notes |
Some veils and wind.
|