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This imaging session was of approximately 4.1/2 hours duration of which the central portion ran mainly unattended under script control. A number of check visits were made to the observatory to check progress and to add additional targets to the target program. This was achieved without having to pause or restart the script operation. A total of 283 CCD Images were taken as part of the scripted operation covering the following tasks :
Images of 19 variables in constellations And, Peg & Lac
Images of 16 variable stars in constellations Cam, Per & Tau
Images of 10 variable stars in constellations Aur, Gem, Mon & Cnc
Mosaics of M42/M43 Nebula, NGC 2024
Attempted images of comets P/1986 A1 (Shoemaker) and C/2001 HT50
Images of Abell 407, NGC 2261, 2264, 2392, UGC 4047
Attempted images of UGC 5829
In addition to the above images of Horsehead and Crab Nebula (M1), Jupiter and Saturn were acquired under manual control.
Minor problems encountered during scripted operation were :
Some of the star targets in Lacerta whilst still above the lower limit line (which is defined on visibility restrictions relating to observatory walls and nearby house roofs, did bring the dew shield into contact with the roof of the observatory. Due shield is of soft foam and easily gave way. Intervention required to adjust it for following targets.
Re-occurence of problem which causes Telescope to sometimes fail to slew in Dec, causing certain frames in Mosaic to be missed. Problem repeated exactly when script told to rerun missed points.
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Variables in Pegasus, Andromeda, Lacerta, Auriga, Gemini, Cancer, Camelopardalis, Perseus and Taurus were imaged using Automated Scripting (see Scripting and Light Curves)
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| IC 434 (Horsehead Nebula) (Orion) |
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CCD frame, 8 x 2 minutes exposure 2003-01-23 20:32 to 20:50h UT (#41005-13) 10.3 x 7.5 arc mins |
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| M1 (Taurus) |
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CCD image, 3 x 120 sec exposures 2003-01-23 20:56 to 21:02h UT (#41016-18) 11.2 x 7.6 arc mins |
| M1 - false colour image |
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False Colour CCD image (image as above) |
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| NGC 2392 / PLN 197+17.1 (Gemini) |
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CCD image, 6 x 60 sec exposure 2003-01-24 00:13 to 00:19h UT (#41279-83) 11.3 x 7.6 arc mins |
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More detailed view (diameter of planetary nebula is 45 arc secs) |
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Portion of CCD image, 3 x 60 sec exposure 2003-01-24 00:21 to 00:25h UT (#41285-87) 5.2 x 4.3 arc mins |
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NGC 2261 (Monoceros) GCVS R Mon - INa Variable |
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CCD image, 5 x 60 sec exposure 2003-01-24 00:01 to 00:06h UT (#41267-71) 11.3 x 7.6 arc mins |
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CCD Mosaic of M42 (Orion) M43 is smaller nebula in upper right corner |
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Mosaic of
CCD frames, 30s exposures taken on 2003-01-23 22:46 to 23:17h UT (#41191-225) 26 x 30 arc mins Missing frames are due to Telescope Failing to Move in RA or Dec problem |
| M43 |
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Mosaic of CCD frames, 30s exposures taken on 2003-01-23 23:12h UT (#41219) 11.4 x 7.6 arc mins |
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Rough CCD Mosaic of NGC 2024 (Orion) bright star to right is Alnitak, Mag 1.7 |
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Mosaic of CCD frames, 30s exposures taken on 2003-01-23 23:25 to 23:41h UT (#41191-225) 41 x 34 arc mins |
| Alnitak (full scale image - off-axis effect) |
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| NGC 2264 (Monoceros) |
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CCD image, 4 x 60 sec exposure 2003-01-24 00:07 to 00:12h UT (#41273-77) 11.3 x 7.6 arc mins |
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CCD Image of WDS 4498, near Betelgeuse Double star (Mag 8.8, 8.9, separation distance 18.6 arc sec) |
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CCD Image, 20s exposure taken on 2003-01-23 20:28h UT (#41001) 11.4 x 7.6 arc mins |
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CCD Image of WDS 4498 Streamers of light, first though to nebulosity, are probably a form of glare from Betelgeuse which lies around 24 arc min north of this image.. |
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CCD Image, 20s exposure taken on 2003-01-23 20:28h UT (#41002) 11.4 x 7.6 arc mins |
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| Abell 407 , UGC 2489 (Perseus) |
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CCD Image 3x4, 10 x 60s exposure 2003-01-23 22:32 to 22:44h UT (#41180-89) 11.3 x 7.6 arc mins |
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C/2001 HT50 (traversing Monoceros) (c. 3 arc min away from the position reported by TheSky) |
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CCD image, 20s exposure 2003-01-23 23:53h UT (#41260) 11.4 x 7.6 arc mins |
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| Jupiter |
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CCD image, 1s exposure 2003-01-24 00:38h UT (#41298) 11.4 x 7.6 arc mins |
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Detailed view of Jupiter ( Io and Ganymede are only just visible in this 0.1 sec exposure) |
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CCD image, 0.1s exposure, Unsharp-Masked 2003-01-24 00:45h UT (#41314) 3.5 x 2.0 arc mins |
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| Saturn , with 5 moons visible |
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CCD image, 5 x 2s exposure 2003-01-24 00:56h UT (#41334-38) 11.4 x 7.6 arc mins |
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CCD image, 0.1s exposure, Unsharp-Masked 2003-01-24 01:04h UT (#41360) |
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| This Web Page: | CCD Images - Session 41 (2003-01-23) |
| Last Updated : | 2015-05-16 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
