The Crab Nebula Messier 1

Only 44 minutes of exposure, the nebula is clearly imaged. However I don’t like it too much, as the Gain settings wasn’t OK I suspect something went wrong during processing.

The background was way too noisy, even for 44 minutes, and as a result has been made too dark to remove some of the color noise. Also sharpening at some point was too much.

Lots of sensor real estate is waisted with this object being soo small. Probably better to give it a try at a longer focal lenght.

It’s really mysterious to see the results of a star exploding a millenium ago.

FWIW

Esprit 120mm F/7 ASI2600mc Gain 0 EQ8 NUC AstroPixelprocessor and Photoshop Elements

M1, January 24th 2022 Esprit 120 F/7 ASI2600MC 44 minutes @ Gain 0

M81 and M82 the night of January 5th

Image of 3hrs and 38m taken in subs of 1 and 2 minutes.

Esprit 120, ASI2600MC Gain 100, F7, EQ8 ; stacked in AstroPixelProcessor and developed in Photoshop.

The sky was very foggy, sqm around 20,15.

When scanning for little galaxies, several very small galaxies were identified using SIMBAD at apparent magnitudes below 20. As an example:

2MASS J09533544+6908169Type: IR<10um
Mag: 20.62

M81 and M82 on January 5th (first processing)

Second processing
Third processing

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