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M8 Lagoon, M20 Triffid and M21 Cluster in Sagittarius A narrower widefield of the area around these objects. The image was captured with the older Canon 55-200mm f4.5/5.6 zoom lens operating at 200mm F5.6. The lens is really not up to the job, 4mm play in the lens assembly when racked out for 200mm has affected the image badly. Capture details: 20 x 300s ISO 800 Canon EF55-200mm F/4.5-5.6 II USM 200m@f/5.6 Link-words: Star Messier Nebula

M8 Lagoon, M20 Triffid and M21 Cluster in Sagittarius

A narrower widefield of the area around these objects.
The image was captured with the older Canon 55-200mm f4.5/5.6 zoom lens operating at 200mm F5.6. The lens is really not up to the job, 4mm play in the lens assembly when racked out for 200mm has affected the image badly.

Capture details: 20 x 300s ISO 800 Canon EF55-200mm F/4.5-5.6 II USM 200m@f/5.6

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File information
Filename:processed_darksubtracted_p1.jpg
Album name:RobertM / Constellations and Star Fields
Rating (4 votes):33333
Link-words:Star / Messier / Nebula
Image date, time and location:June 24th 2008@23:14 Psilli Amos in Samos Greece
Telescope aperture and focal ratio:Canon EF55-200mm F/4.5-5.6 II USM 200m@f/5.6
Camera and filters used:Unmodded Canon EOS 450D ISO 800
Processing applied:Stacked and calibrated in DSS, Levels and curves in PS
Filesize:420 KiB
Date added:Jun 28, 2008
Dimensions:2145 x 1428 pixels
Displayed:641 times
URL:http://gallery.orpington-astronomy.org.uk/displayimage-506-_M8_Lagoon_M20_Triffid_and_M21_Cluster_in_Sagitt.html
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