Amazing Sky by Alan Dyer

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Coma Berenices Cluster Mel111 with Spikes (92mm 7D).jpg

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Coma Berenices star cluster aka Melotte 111. This is a stack of 4 x 6 minute exposures at ISO 1600 with the Canon 7D on the TMB 92mm apo refractor with Borg 0.85x reducer/flattener for f/4.5. Taken on a slightly hazy night, April 22, 2011 using AP 600E mount and SG4 autoguider.
Copyright
© Alan Dyer 2011
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5191x3460 / 5.9MB
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Star Clusters
Coma Berenices star cluster aka Melotte 111. This is a stack of 4 x 6 minute exposures at ISO 1600 with the Canon 7D on the TMB 92mm apo refractor with Borg 0.85x reducer/flattener for f/4.5. Taken on a slightly hazy night, April 22, 2011 using AP 600E mount and SG4 autoguider.