|
Technical Data
|
| Optics |
Schmidt
camera 400/300/615 (Zen optics)
|
| Focal Lenght |
615 mm
|
| Focal Ratio |
f/2,0
|
| Exposure Time |
Total 3.8 h, 23 selected frames of 10 min
each
|
| Sensor |
Kaf-6303
|
| Filters |
H-alpha 6nm
Astronomik, selected for f/2
|
Chip
temperature
|
-5°C
|
| Location |
Tradate
(VA,
in Pianura
Padana, Italy) at 300m height
|
| Date and time
of exposure
start |
3 October 2008
|
| Mount |
Astrosystems
Fork
|
| Tracking |
Webcam
Vesta
Pro B/W on Pentax 75 refractor
|
| Temperature
and humidity |
T=+20 °C, RH=60 %
|
| Sky brightness at zenith (with SQM-L) | 18.5 - 19.0 mag/arcsec^2 |
| Notes |
-
|
