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M81 LRGB 10x180s

M81 - Reprocessed with the RGB filters assigned to the correct channels!! I had the Blue and Red mixed up before...

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From the album:

QHY23 - first light images!

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  • 3 image comments

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Hi Jerry, I assume it was done with a refractor but could you please tell me the aperture?

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It was a Skywatcher Maksutov-Newtonian 190mm f/5.

The LRGB filters were exposed for 10 x 3 mins each.

The QHY23 was cooled to -20 degrees.

The RGB were binned 2x2 and then upscaled to match the L which was 1x1.

Aligned and stacked in ImagesPlus, with colour combination and processing in PS CS.

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