|
NGC
6633 and IC 4756 (200mm)
|
Lieing over the stars of Milky Way there
is a nice couple of open clusters, wonderful if observed with binoculars
from really dark skys.
|
Technical Data
|
| Optics |
Photographical objective |
| Focal Lenght |
200 mm |
| Focal Ratio |
f/5,6 |
| Exposure Time |
30 min exposure |
| Film |
Kodak E200 |
| Developement sensibility |
320 ISO |
| Location |
Colle del Nivolet (AO,
Italian Alps) at 2600m |
| Date and time of exposure
start |
21 july 2001, 0.06 UT |
| Mount |
Meade 8" |
| Tracking |
ST4 |
| Temperature and humidity |
T=-3°C, RH=90% |
| Notes |
- |
