Technical Data
|
Optics |
TEC 140
|
Focal Length
|
1011 mm
|
Focal
Ratio |
f/7.2
|
Exposure
Time |
Total 8 h 40 min, LRGB 340:60:40:80 min
(single exp of 10 min) |
CCD |
SBIG STL-11000M @-35°C |
Location |
Pian dell' Armà (PV, Italian Apennines) at 1350 m height
|
Date
|
28-29 March 2014 (two nights, but the second 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= -2 °C, RH=100%
|
Sky brightness at
zenith (with SQM-L) |
21.2-21.6 mag/arcsec^2
|
Notes |
North at top.
|