David's Astronomy Pages
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 Images (S303) |
 Images Sessions |
Home Page |
 Images (S305) |
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Objects Session Notes
NGC 6550 - Spiral Galaxy WZ Sge - variable star Astrometric & Photometric Monitoring - SS Cyg (dwarf nova)
- U And (mira variables)
- BL Lac (blazar)
- RX And, CY Lyr, R CrB, RU Peg, DY Per, WZ Sge (variables)
- AM Her (polar variable)
- Evening session (2.6 hrs). Coldest session so far this season (5.5 degC).. Skies deteriorated during latter part of session with high thin cloud, accompanied by 2.5 deg warming. - Ambient Temperature 5.5 degC Min.
(11 --> 5.5 --> 8 degC)- CCD operation of -15 degC
(at 57% average cooling).- main objective of the session was to acquire images of key selected stars for ongoing photometric and astrometric analysis. -
| NGC 6550 (Pegasus) might also be known as NGC 6548 (appears to be two spiral galaxy objects at the same location in TheSky, both Mag +11.7) |
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CCD Image 5 x 120 sec exposure (average combine), 2x2 binning, C Filter 2008-09-22 21:59 UT (#304080-84) |
| NGC 6550 - detail NGC 6550 spiral galaxy (catalog mag +11.7) NGC 6549 spiral galaxy (catalog mag +14.6) |
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Annotated CCD Image Image details as above |
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| WZ Sge (Sagitta) WZ Sge has been described as the King of Cataclysmics. Although outbursts are rare they are understood to be spectacular when they do occur, with rapid nova-like brightening and interestingly superhumps, eclipses and a long decay profile [ VSNet WZ Sge Page ] GCVS Catalog details :UGSU+E+ZZ (+7.0 to +15.53) Outbursts in 1978, 2001 |
| WZ Sge - Reference Stars |
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Annotated CCD Image 120 sec exposure, 2x2 binning, V Filter 2008-09-22 21:20h UT (#304061) |
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WZ Sge - detail WZ Sge measured mag +15.2 |
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Annotated CCD Image (200% size, cropped) 3 x 120 sec exposure (average combine), 2x2 binning, V Filter 2008-09-22 21:18h UT (#304059-61) [for comparison see outburst image of WZ Sge by G. Masi ] |
| Earlier Images
(2008-06-21) Star field surrounding WZ Sge (Sagitta) |
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CCD Image 3 x 30 sec exposure (average combine), 2x2 binning, C Filter 2008-06-21 01:13h UT (#291126-30) |
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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 304 (2008-09-22) |
| Last Updated : | 2015-05-16 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
