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由 benben88 » 週三 22 10月, 2014 23:48
It is the region in between epsilon and Delta Cassiopeia where several open clusters namely M103, NGC 659,663 and 654 are located. They are also nice targets for binoculars.
Details :
5 inch APO, William optics flattener @F6 . 5Dmark II ISO 1600, P2 filter. 2min x 5 @ Yuen long on 20 Oct 2014.
Guiding 9x50 finder with DSI II , Vixen new atlux mount.
No flat , dark calibrated .
DSS and PS touch up.
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