Technical Data
|
Optics |
TEC 140
|
Focal Length
|
1011 mm
|
Focal
Ratio |
f/7.2
|
Exposure
Time |
Total 12 h, composed of OIII-Ha-RGB 390:150:60:60:60 min
(single exp of 30 min for OIII and Ha, and 10 min for RGB) |
CCD |
SBIG STL-11000M @-30°C
|
Location |
Saint Barthelemy football field (AO, Italian Alps) at 1600 m heigth
|
Date
|
7-8 September 2018 (2 nights)
|
Mount |
Gemini
G-41
|
Tracking |
Lodestar
on an 80mm f/5 refractor
|
Temperature
and
humidity |
T= (+10 to +7) °C, RH=(85 to 100) %
|
Sky brightness at
zenith (with SQM-L) |
(21.3 to 21.5) mag/arcsec^2
|
Notes |
The first night was perfectly clear while about 50% of the second night was clouded.
|