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Image collection based on the sky tour "Bearing summertime deep sky gifts" featured in the Jul 2012 edition of Astronomy Now. Comprising star clusters, double stars and planetary nebula in the constellation Ophiuchus.
1. Barnard 72 - Dark Nebula (not yet imaged) 2. NGC 6369 - Planetary Nebula (Little Ghost Nebula) 3. M107 - Globular Cluster 4. RS Ophiuchi - Variable Star (not yet imaged) 5. M10 - Globular Cluster 6. M12 - Globular Cluster 7. 70 Ophiuchi - Double Star 8. IC 4664 - Open Cluster (not yet imaged)
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NGC 6369 / Herschel IV-11 (Ophiuchus) |
CCD Image (70% size reduction) 8 x 20s sec exposure (average combine), 2x2 binning, C Filter 2009-05-26 23:37 h UT (#369086-88) 12" LX200R (at f/5.7) + ST-10XME Image at just 6 deg above SSE horizon |
NGC 6369 - detail |
CCD Image (150% size enlargement, cropped) Image details as above |
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M107 (Ophiuchus) |
CCD Image 5 x 60s exposure (average combine), 2x2 binning, C filter, 2007-04-05 03:39 h UT (#189333-37) 8" LX200 classic + ST-7e |
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M10 (Ophiuchus) |
CCD Image 4 x 20 sec exposure (average), clear filter 2005-08-14 21:40 h UT (#92063-67) 8" LX200 classic + ST-7e |
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M12 (Ophiuchus) |
CCD Image 5 x 20 sec exposure (average), clear filter 2005-08-14 21:51 h UT (#92072-76) 8" LX200 classic + ST-7e |
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70 Ophiuchi (Ophiuchus) This star is a binary system lying 17 light years from Earth The system has an orbital period of 88 years, with the pair swinging between 1.6 and 7.0 arc secs [ Astronomy Now magazine, June 2006 ] |
Ophiuchi 70 (Ophiuchus) - Close up,
colour view The following image shows the two components as two distinct objects separated by around 5 arc secs and having noticeably different colours. Primary star : Yellowish (catalog mag +4.2), Secondary star : Reddish (catalog mag +5.9) Measured Separation 5.2 +/- 0.5 arc sec, PA : 138 deg +/- 5 deg FWHM 4.5 arc secs |
Approximate colour CCD Image (300% size) Red : 3 x 10s exposure (average combine), R Filter Green : 3 x 10s exposure (average combine), V Filter Blue : 3 x 20s exposure (average combine), B Filter 1 x1 binning 2006-05-24 23:18 hUT (#127100-108) |
Ophiuchi 70 (Ophiuchus) and
neighbouring stars Ophiuchi 70 and some of the neighbouirng stars comprise the multiple star Struve 2272 The following image shows the Ophiuchi 70 as a bright single object, due to the white-black range used to show the faint neighbouring stars. |
CCD Image (50% size) 3 x 5s exposure (average combine), 1x1 binning, C Filter 2006-05-24 23:18 hUT (#127097-99) |
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This Web Page: | Sky Tour: Jul (1) - Ophiuchus |
Last Updated : | 2015-05-18 |
Site Owner : | David Richards |
Home Page : | David's Astronomy Web Site |