Technical Data
|
Optics |
TEC 140
|
Focal Length
|
1011 mm
|
Focal
Ratio |
f/7.2
|
Exposure
Time |
Total 13 h 40 min, LRGB 450:130:120:120 min
(single exp of 10 min) |
CCD |
SBIG STL-11000M @-35°C and -30°C
|
Location |
Colle dell'Agnello (CN, Italian Alps) at 2700 m height
|
Date
|
23-24-25-27 August 2014 (four nights, but the third one only of a few hours due to incoming clouds)
|
Mount |
Gemini
G-41
|
Tracking |
Lodestar
on an 80mm f/5 refractor
|
Temperature
and
humidity |
T= from 0 to +9 °C, RH= from 51 to 92%
|
Sky brightness at
zenith (with SQM-L) |
21.3-21.6 mag/arcsec^2
|
Notes |
North at top.
|