Technical Data
|
Optics |
TEC 140
|
Focal Length
|
1011 mm
|
Focal
Ratio |
f/7.2
|
Exposure
Time |
Total 7 h 10 min, composed of Ha 3.5 h, LRGB 120:30:30:40 min
(single exp of 30 min for Ha, 10 min for LRGB) |
CCD |
SBIG STL-11000M @-30°C
|
Location |
Saint Barthelemy, Porliod (AO, Italian Alps) at 1900 m height
|
Date
|
10 October 2015
|
Mount |
Gemini
G-41
|
Tracking |
Lodestar
on an 80mm f/5 refractor
|
Temperature
and
humidity |
T= (+7 to 0) °C, RH=(70 to 90) %
|
Sky brightness at
zenith (with SQM-L) |
21.3 mag/arcsec^2
|
Notes |
Very transparent night.
|