Messier 45

Optic: Canon 400 mm f:5.6 L. Camera: Modified Baader Canon 350D (Ha pass filter - see here) at ISO800. Processing: Iris software. Exposure: 50 minutes (10 x 5 minutes). Location: Pic du Midi (altitude 2860 meters, french Pyrénées). Date: August 27.14, 2006.

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Negative high contrast view of the field (mean of R, G en B channel)

Localization of Be stars in Messier 45
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