|
Polar
rotation on the telescopes
|
The tranquillity of the sky that slowly
rotate in contrast with the agitation of the amatour astronomers that observe
with their telescopes. The telescope on the right is of my friend Giampiero
Realmuto (with a lot of red lights), the one on the ledt is mine. At the
extreme left there are the lights from a car that passed during the four
hours exposure.
|
Technical Data
|
| Optics |
Photographical objective |
| Focal Lenght |
16 mm |
| Focal Ratio |
f/22 |
| Exposure Time |
4 hours exposure |
| Film |
Kodak PJ-400 |
| Developement sensibility |
400 ISO |
| Location |
Pian dell'Armà
(PV, in the Italian Appennines) at 1400m |
| Date and time of exposure
start |
5 november 2000, 0.20
UT |
| Mount |
Fixed tripod |
| Tracking |
- |
| Notes |
- |
