Milkyway:
M31 Andromeda galaxy Aug/Sept 2015
William Optics 90mm Megrez APO @ F4.98 (f:448 mm), 3.41"/pixel 1.94 by 1.94 deg. with Tele Vue TRF-2008 0.8 reducer/flattener, SBIG ST-4000XCM -15C 3h10min (19x600sec).
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Light travel time: 2.54 mill years.
Processing: CCDSoft, Astroart 5.0, Pixinsight.
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