Taken 11-Jul-10
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Dimensions3472 x 2312
Original file size944 KB
Image typeJPEG
Color spaceUncalibrated
M-17 in H-Alpha (and intruding airplane passing)

M-17 in H-Alpha (and intruding airplane passing)

From July 2008 with the H-Alpha and Orion 80ED scope. 10 exposures at 800 ISO at 7 minutes each. Airplane passed through, but the frame was good so I kept it anyway!