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Alan writes "This was my first attempt at a high dynamic range (64 bit) version of M42. I wanted an image that showed the trapezium & the gases.

Skywatcher ED80/600mm, Canon 750D, HEQ5 & a light pollution filter. Moon was getting very low / gone. Approximately 90x 15 second frames were used and 40x 1 minute frames. All at 800ISO. No calibration frames or dithering.

Stacked in DSS & imported to Pixinsight for HDR.

[Alan Pickering]