|
|
|
|
|
|
|
| Optics | TEC 140 |
| Focal Lenght | 1011 mm |
| Focal Ratio | f/7.2 |
| Exposure Time | 2h40m
(single
exp of 10 min) |
| CCD | Canon
EOS 5D
with baader filter |
| Sensitivity | 800 ISO |
| Location | Colle
dell'Agnello (CN,
Italian Alps) at 2700 m height |
| Date |
2 August
2011 |
| Mount | Gemini
G-41 |
| Tracking | Lodestar
on
an 80mm
f/5 refractor |
| Temperature and humidity | T=
+12°C,
RH=50% |
| Sky brightness at zenith (with SQM-L) | 21.5 mag/arcsec^2 |
| Notes | A very nice field full of other H-alpha emission nebulae |
|
|
 |