David's Astronomy Pages
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 Images (S296) |
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 Images (S298) |
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Objects Session Notes
C/2007 W1 (Boattini) - Comet EV Lac - (GJ 873) - Nearby Star (16.5 ly) FG Sge - Variable Star Astrometric & Photometric Monitoring - SS Cyg (dwarf nova)
- U And, W And, U Her, SS Her (mira variable)
- RX And, Z And, R CrB, DY Per, TT Ari, RU Peg, TZ Lyr, CY Lyr (variables)
- U Sge, V Sge, WZ Sge, FG Sge, EV Lac (variables)
- Barnards Star, 61 Cyg, EV Lac (GJ 873), HH And, Groombridge 34, Groombridge 1618, Teegardens Star, Van Maanen's Star (Nearby Stars)
- BL Lac attempt (failed link)
- First dark session of new season (5.8 hr) and first session for over one month due to holidays and cloudy skies. - Ambient Temperature 7 degC - CCD operation of -15 degC
(at 61% average cooling).- main objective was to acquire images of key selected stars for ongoing photometric and astrometric analysis. - opportunity take to acquire images of Mag 10 comet C/2007 W1 (Boattini) -
| C/2007 W1 (Boattini) passing through starfield in Aries |
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Annotated CCD Image 3 x 120 sec exposure (average combine), 2x2 binning, C Filter 2008-08-26 01:47 UT (#297250-52) |
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Improved baseline astrometric images of EV Lacerta (GJ 873, HIP 112460) were acquired, containing 82-85 astrometric reference stars
(Note : EV Lac is also a UV Cet flare star)
| EV Lac / GJ 873 (Lacerta) |
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Annotated CCD Image (75% size) 7 x 45 sec exposure (average combine), 1x1 binning, C Filter 2008-08-26 00:52 UT (#297206-12) |
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Baseline images of FG Sge recorded in C, V, R
filters.
It is noted that coordinates of FG Sge (catalog mag +9.4 to +13.6) appears to be
close or coincident with those of the planetary nebula PLN 60- 7.1 (catalog mag
? +16.0)
| FG Sge (Sagitta) (FG Sge appeared as AAVSO's Variable Star of the Month for June 2008 (goto article) |
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Annotated CCD Image 3 x 60 sec exposure (average combine), 2x2 binning, C Filter 2008-08-26 02:54 UT (#297312-14) |
| FG Sge - reference stars |
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Annotated CCD Image 60 sec exposure, 2x2 binning, V Filter 2008-08-26 02:46 UT (#297306) |
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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 297 (2008-08-25) |
| Last Updated : | 2015-05-16 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
