David's Astronomy Pages
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 Images (S221) |
 Images Sessions |
Home Page |
 Images (S223) |
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Objects Session Notes
NGC 7721 - Spiral Galaxy with Supernova 2007le S Cyg - Mira variable NGC 7448 - Spiral Galaxy (ARP 13, Herschel II-25) Astrometric & Photometric Monitoring
- SS Cyg (Dwarf Nova)
- BL Lac (Blazar)
- U And, W And, U Her (Mira variables)
- Z And (variable)
- Barnard's Star, Groombridge 34, HH And (Nearby Stars)
- Evening session (2.9hr) CCD operation of -15 degC (at 63% average cooling). - main objective of the session was to acquire an images of selected stars for ongoing astrometric and photometric studies - opportunity was also taken to acquire images of two ARP galaxy in Pegasus for a new gallery collection, and a recent supernova (2007le) in NGC 7721 in Aquarius
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NGC 7721 (Aquarius) with SN 2007le |
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| Annotated CCD Image 5 x 120s exposure (average combine), 2x2 binning, C Filter, Linear brightness scaling 2007-10-19 20:54 hUT (#222130-34) |
| NGC 7721 with SN 2007le - detail |
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| CCD Image (200% size) Square root brightness scaling Image details as above |
| NGC 7721 - detail |
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| False colour CCD Image Square root brightness scaling, False colour (inverse spectrum) Image details as above |
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S Cyg (Cygnus) |
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S Cyg is a mira variable with catalog period of
322.93 days |
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Annotated CCD Image |
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S Cyg - Reference Stars Used |
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Annotated CCD Image |
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NGC 7448 / ARP 13 / Herschel II-251 (Pegasus) |
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| CCD Image (100% size, linear scale) 4 x 3 min exposure (average combine), 2x2 binning, C Filter 2007-10-19 21:35 hUT (#222166-69) 8" LX200 Classic + ST-7E |
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NGC 7448 - Detail |
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| Negative CCD Image (100% size) Image details as above |
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| False Colour CCD Image (100% size,
Square root scale) Image details as above |
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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 222 (2007-10-19) |
| Last Updated : | 2019-08-10 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
