David's Astronomy Pages
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 Images (S302) |
 Images Sessions |
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 Images (S304) |
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Objects Session Notes
NGC 7128 - Open Cluster (H VII-40) V777 Her (GD 358) - Pulsating White Dwarf AM Her - Variable Star (Polar) NGC 7044 - Open Cluster (H VI-24) NGC 6823 - Open Cluster (H VII-18) UGC 442 - Spiral Galaxy & Supernovae 2008eo NGC 7805 & NGC 7806 - Spiral Galaxies (ARP 112) NGC 6910 - Open Cluster (H VIII-56) Astrometric & Photometric Monitoring - SS Cyg (dwarf nova)
- H Her, SS Her (mira variables)
- BL Lac (blazar)
- RX And, CY Aqr, CY Lyr, R CrB, RU Peg, DY Per, FG Sge, U Sge, V ge, WZ Sge, ER UMa (variables)
- AM Her, QQ Vul (polar variables)
- 61 Cyg, Teegardens Star (nearby stars)
- HR Aur, FU Ori attempts (failed due to cloud)
- Groombridge 1618, Groombridge 1830, Gliese 412, Lalande 21185 attempts (failed due to dawn or dawn+ cloud)
- Night time session (8.7 hrs). First clear all night session in new season. Session run in automated mode for first 2 hours and last 5 hours. Middle of session monitored remotely. - Ambient Temperature 10.2 degC Min.
(15 --> 10.2 --> 13 --> 11.5 degC)- CCD operation of -15 degC
(at 74% average cooling).- main objective of the session was to acquire images of key selected stars for ongoing photometric and astrometric analysis. - opportunity taken to acquire gallery shots of selected Herschell 400 objects and selected ARP objects.
Goto Notes from 2008-09-20
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| NGC 7128 / Herschel VII-40 (Cygnus) |
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CCD Image 3 x 90 sec exposure (average combine), 2x2 binning, C Filter 2008-09-20 21:47 UT (#303071-73) |
| NGC 7128 - detail showing nebulosity |
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CCD Image as above Log Scale |
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| 777 Her / GD 358
(Hercules) Photometric test run Longer test run over 95 minutes. The test indicates probable variation of V777 Her with a frequency of 6-10 minutes. Note : Error bars associated with measurements of both V0777 Her and the control star generally widen towards the end of the test, reflecting the deteriorating sky conditions with resulting reduction in S/N. |
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| C Filter: 45s, 2x2 binning (#303076-178) |
| V0777 Her - Signal to
Noise Photometric test run Falling S/N values in the graph below reflect the decreasing altitude/increasing air mass through the 95 minute test interval, with cloud / poor seeing at end of period.. |
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| V777 Her - earlier image with reference stars (2008-07-13) |
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| Annotated CCD Image 60s, 2x2 binning, C Filter 2008-07-13 00:48 hUT (#294120) |
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New baseline images of AM Her recorded in C
filter.
180s exposure.
AM Her - S/N 25, mag +15.0 (Cv)
C Star - S/N 432, K Star - S/N 52,mag +14.0 (Cv)
| AM Her (Hercules) |
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Annotated CCD Image 2 x 180 sec exposure (average combine), 2x2 binning, C Filter 2008-09-20 23:37 UT (#303185-86) |
| AM Her - reference stars |
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Annotated CCD Image 2 x 180 sec exposure (average combine), 2x2 binning, C Filter 2008-09-20 23:37 UT (#303185-86) |
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| NGC 7044 / Herschel VI-24 (Cygnus) |
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CCD Image 3 x 90 sec exposure (average combine), 2x2 binning, C Filter 2008-09-21 00:08 UT (#303196-200 |
| NGC 7044 - detail |
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CCD Image as above (alternative black-white range) |
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| NGC 6823 / Herschel VII-18 (Vulpecula) Traces of nebulosity just visible |
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CCD Image 3 x 90 sec exposure (average combine), 2x2 binning, C Filter 2008-09-21 00:28 UT (#303214-16) |
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UGC 442 with SN 2008eo (Andromeda) Image below
(2008-09-21.03) was taken 49 days after discovery. |
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CCD Image 3 x 90 sec exposure (average combine), 2x2 binning, C Filter 2008-09-21 00:43 UT (#303229-33) |
| UGC 442 with SN 2008eo - detail UGC 442 / PGC 2504 (catalog mag +16) PGC 212582 (catalog mag +17.1), PGC 2019821 (catalog mag +17.6) |
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Annotated CCD Image (250% size scale) (image details as above) |
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NGC 7805 & NGC 7806 / ARP
112 (Pegasus) |
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| CCD Image 5 x 180s exposure (average combine), 2x2 binning, C Filter, 2008-09-21 02:01 hUT (#303302-06) |
CCD Image (negative) Image details as left |
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| ARP 112 - detail | ARP 112 - negative | |
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| Annotated CCD Image (250% size) (Image details as above) |
CCD Image (250% size) (Image details as above left) |
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| NGC 6910 / Herschel VIII-56 (Cygnus) |
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CCD Image 3 x 120 sec exposure (average combine), 2x2 binning, C Filter 2008-09-21 02:52 UT (#303341-43) |
| NGC 6910 - detail showing nebulosity |
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CCD Image as above Log Scale |
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CCD Image as above Log Scale, False Colour (inverse spectrum) |
| Previous Image of NGC 6910
(2005-06-07) (no nebulosity is visible) |
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CCD Image 3 x 60s (average combine), clear filter 2005-06-07 00:45 h UT (#88105-07) |
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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 303 (2008-09-20) |
| Last Updated : | 2020-11-29 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
