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The Bode Galaxy M81 from Thézac (department 17) on 17/07/2018 Auto-guiding : Optical divisor on C8 at F=1260mm, LodeStar StarLight Xpress Optical tube : C8 at F=1260mm Mount : Skywatcher NEQ6 Goto Imager : Atik 314L+ à 17°C (cooler forgotten !) Moon : no moon Conditions : 18°C, a few dew Pictures : L:43x30s bin1 R:8x30s bin2 V:8x30s bin2 B:8x30s bin2 Offset : 11x0.001s en bin1 et 15x0.001s en bin2 Dark : 11x120s en bin1, 11x120s en bin2 flat L:11x0.025s R:11x0.4s V:11x0.02s B:11x0.012s Image processing : IRIS then GIMP Commentary : Good shot compared to previous ones, 30s is ok, and optical divisor is good.
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80ED refractor F=600mm Canon 450D 2 exposures of 5mn at 1600 ISO, guiding with C8 (2010)
M81 with C8
