David's Astronomy Pages
|
 Images (S314) |
 Images Sessions |
Home Page |
 Images (S316) |
|
Objects Session Notes
M57 - Planetary Nebula ("Ring Nebula") Astrometric & Photometric Monitoring - SS Cyg (dwarf nova)
- SS Her, U Her (mira variables)
- R CrB, RU Peg, GK Per (variables)
- U Sge attempt (failed due to cloud)
- Short evening session (1.6 hrs), cut short by developing cloud - Ambient Temperature 6.5 degC (minimum) j - CCD operation of -20 degC
(at 76% average cooling).- main objective of the session was to acquire images of key selected stars for ongoing photometric and astrometric analysis. - opportunity taken to take a set of images of M57
-
| M57 (Lyra) |
|
|
CCD Image (60% size) 3 x 60s exposure (average combine), 1x1 binning, C Filter 2008-10-13 19:14 hUT (#315009-11) [ Full size image ] |
| M57 - detail |
|
|
CCD Image (150% size, cropped) Image details as above |
Back to Top
Images collected for Astrometric Monitoring
of Nearby Stars Project
Images collected for Photometric Monitoring
of Variable Stars
Back to Top
| This Web Page: | CCD Images - Session 315 (2008-10-13) |
| Last Updated : | 2015-05-16 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
