David's Astronomy Pages
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 Images (S308) |
 Images Sessions |
Home Page |
 Images (S310) |
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Objects Session Notes
CY Lyr - Variable Star (Type UGSS) Astrometric & Photometric Monitoring - SS Cyg (dwarf nova)
- U And, W And, SS Her (mira variables)
- BL Lac (blazar)
- RX And, CY Lyr, RU Peg, DY Per, GK Per (variables)
Time Series
- EV Lac (test), V0777 Her
- Late Evening session (3.4 hrs) - Ambient Temperature 4.5 degC (minimum) - CCD operation of -20 degC
(at 69% average cooling).- main objective of the session was to acquire images of key selected stars for ongoing photometric and astrometric analysis. - a secondary objective, to test revised routine for automated guiding between frames, was not possible due to early termination of the session.
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CY Lyr (Lyra) |
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Annotated CCD Image 3 x 180s sec exposure (average combine), 2x2 binning, V Filter 2008-09-30 20:24 h UT (#309071-73) |
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CY Lyr - earlier image (2007-10-22) |
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Annotated CCD Image 3 x 60s sec exposure (average combine), 2x2 binning, V Filter 2007-10-22 23:47 h UT (#224278-80) |
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Later Image of CY Lyr taken with C
Filter |
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Annotated CCD Image 3 x 180s sec exposure (average combine), 2x2 binning, C Filter 2006-10-18 21:23 h UT (#316149-51) |
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Earlier Image of CY Lyr from 2006 |
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Annotated CCD Image 3 x 120s sec exposure (average combine), 2x2 binning, V Filter 2006-09-08 22:58 h UT (#141205-07) |
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CY Lyr - Reference Stars |
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Annotated CCD Image 3 x 60s sec exposure (average combine), 2x2 binning, V Filter 2007-10-22 23:47 h UT (#224278-80) [ AAVSO Star Chart for CY Lyr ] |
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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 309 (2008-09-30) |
| Last Updated : | 2015-05-16 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
