David's Astronomy Pages
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 Images (S333) |
 Images Sessions |
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 Images (S335) |
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Objects Session Notes
NGC 4301 - Spiral Galaxy Astrometric & Photometric Monitoring - U Gem (dwarf nova)
- U Her (mira)
- BL Lac (blazar)
- R CrB, DY Per, RR Tau (variables)
- Gliese 412 (nearby stars)
SS Cyg, HIP 36208 (failed due to cloud/poor transparency)
- Two parts to this session
A) evening session attempt (0.5 hrs), rapidly curtailed by poor sky transparency/developing cloud
B) early morning session on 2008-12-17 (2.0 hrs)- Ambient Temperature (A) +3.5 degC, (B) +0.5 degC (minimum), rising to +1.5 degC by end of session. - CCD operation
(A) -30/-29 degC (at 100% average cooling).
(B) -30 degC (at 84% average cooling).- main objective of the session was to acquire images of key selected stars for ongoing photometric and astrometric analysis. - -
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NGC 4301 (Virgo) |
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CCD Image - Linear scaling 3 x 180s sec exposure (average combine), 2x2 binning, C Filter 2008-12-17 06:32 h UT (#334064-66) |
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Images collected for Astrometric Monitoring
of Nearby Stars Project
Images collected for Photometric Monitoring
of Variable Stars
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| This Web Page: | CCD Images - Session 334 (2008-12-16) |
| Last Updated : | 2015-05-16 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
