David's Astronomy Pages CCD Images - Session 49 (2003-08-05) Images (S48)   Images (Main)   Home Page   Images (S50)

Notes (S00049)

Sky transparency was poor, with conditions unsuitable for deep sky imaging. The session of concentrated on imaging Pluto and a number of Messier clusters. 99 CCD images were taken over a period of 1.6 hours. 

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Pluto

Pluto (moving through Ophiuchus)

Animated sequence of CCD images taking over 3 days. Motion recorded as 0.83 arc min per day. 2003-08-02  to 2003-08-05  8.5 x 6.7 arc mins

Pluto  (marked with cross-hair)

CCD images, 7 x 20s (median combine) 2003-08-05  21:30 to 21:33h UT  (#49009-15) 11.4 x 7.6 arc mins

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M11 (Wild Duck Cluster) - Open Cluster

M11  (Scutum)

CCD image,  6 x 10 sec exposures (median combine) 2003-08-05  21:46 h UT (#49032-49037) 11.4 x 7.6 arc mins

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M26 - Open Cluster

M26  (Scutum)

CCD image,  5 x 20 sec exposures  (top - median combine bottom - summed combine) 2003-08-05  21:57 to 21:59 h UT (#49049-49053) 11.4 x 7.6 arc mins

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M10 Globular Cluster

M10  (Ophiuchus)

CCD image,  3 x 10 sec exposures (summed) 2003-08-05  22:12 h UT (#49065-67) 11.4 x 7.6 arc mins

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M12 Globular Cluster

M12  (Ophiuchus)

CCD image,  4 x 10 sec exposures (summed) 2003-08-05  22:19 h UT (#49069-72) 11.4 x 7.6 arc mins

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M14 - Globular Cluster

M14  (Ophiuchus)

CCD image,  2 x 20 sec exposures (summed) 2003-08-05  22:04 to 22:05 h UT (#49061-62) 11.4 x 7.6 arc mins

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Exposure Time / Magnitude reach

Effect of increasing exposure time on magnitude reach

Consecutive CCD images (star field in Milky Way in Cygnus) 2003-08-05  (#49087-8), 5.2 x 7.6 arc mins The 10 sec exposure reaches to +12.3 whilst the 40 sec exposure reaches to 13.5

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