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Old 20-09-2011, 09:46 PM
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tilbrook@rbe.ne (Justin Tilbrook)
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tilbrook@rbe.ne is offline
 
Join Date: Jun 2007
Location: Penwortham
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Observation and image of comet Garrard Sep20

Hi,
Made a visual observation and imaged Comet Garrard tonight.

Location Penwortham South Australia.

Date 20/09/2011 Time 10.33 UT

Telescope 200mm equatorial reflector F6

Magnification 75x

Estimated mag = 8.3 defocus method, using GSC mags guide 7.

DC(degree of condensation) = 6

Diam 3.5 x 6.0 arc minutes.

Visible in 80mm finder.

Higher DC than previous observation, but magnitude seems slightly less, could be due to GSC star mags used.
CCD image. North to bottom.
SAC7 CCD modified with home made focal reducer on 200mm F6 reflector
Image size 22.81 x 17.28 arc minutes.
9 x 10 second images stacked unprocessed.
Time 10.10 UT.
 
Cheers,

Justin.
Attached Thumbnails
Click for full-size image (GarrardAug22.jpg)
9.9 KB3 views
Click for full-size image (Garrardaug27.jpg)
11.3 KB6 views
Click for full-size image (Garrard Sep14.jpg)
8.7 KB4 views
Click for full-size image (garrardsep201.jpg)
17.8 KB2 views
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