David's Astronomy Pages
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 Images (S239) |
 Images Sessions |
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 Images (S241) |
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Objects Session Notes
29 Amphitrite - Minor Planet NGC 1535 - Planetary Nebula (Cleopatra's Eye) NGC 579 - Spiral Galaxy NGC 2261 (Hubble's Variable Nebulae) NGC 497 - Spiral Galaxy 17P/Holmes - Comet M42 - Bright Nebula (Great Nebula) Astrometric & Photometric Monitoring
- SS Cyg, U Gem (dwarf nova)
- BL Lac (Blazar)
- U And (mira variable)
- RX And, RZ LMi, U Mon (variables)
- RU Peg, Z And (variables)
- NGC 2782, NGC 4151 (Seyfert Galaxies)
- DX Cnc, 61 Cyg, Gliese 725, Gliese 1245, Groombridge 34, CN Leo (Wolf 359) (Nearby Stars)
- Evening session (7.1hr), operated under automated control for majority of session.
Problem maintaining focus through session, unclear if this was caused by temperature change, seeing deterioration or mirror movement.CCD operation of -20 degC (at 56% average cooling). - main objective of the session was to acquire an image mosaic of comet 17P/Holmes (now grown to larger than the apparent diameter of the moon) -secondary objectives were to acquire images of certain selected stars of ongoing photometric and astrometric analysis -opportunity was also taken to acquire gallery images of Caldwell 51 (IC 1613), and certain other comets and deep sky objects. - An 81 point TPoint Mapping Run was conducted at the end of the session
Notes
| 29 Amphitrite (moving through starfield in Aries) |
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Annotated
CCD Image (50% scale) 3 x 45 sec exposure (average combine), 1x1 binning, C Filter 2007-12-07 22:23h UT (#240041-43) |
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NGC 1535 (Eridanus) |
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CCD Image (50% size) |
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NGC 1535 - detail |
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CCD Image (250% size) |
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NGC 579 (Triangulum) |
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CCD Image |
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NGC 579 - detail with Supernova 2007pk |
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CCD Image |
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NGC 2261 (Monoceros) GCVS R Mon - INa Variable |
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CCD image, 5 x 60 sec exposure (average combine) 2007-12-08 00:02h UT (#240134-38) |
| NGC 2261 - detail |
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CCD image (250% size) Image details as above |
| Earlier Image of NGC 2261, 2003-01-24 |
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CCD image, 5 x 60 sec exposure 2003-01-24 00:01 to 00:06h UT (#41267-71) |
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NGC 497 (Cetus) |
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CCD Image |
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Comet 17P/Holmes - Central Detail |
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| CCD Image (50% size), Linear Scale 7 x 60s exposure (av. combine), 1x1 binning, C Filter, 2007-12-08 02:05h UT (#240221-27) |
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M42 (Orion) |
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CCD Image Mosaic (50% size) |
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M42 - detail |
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CCD Image Mosaic (50% size) |
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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 240 (2007-12-07) |
| Last Updated : | 2015-05-16 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
