California Nebula in RGB (David McClain)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: California nebula · NGC 1499 · Part of the constellation Perseus (Per) · The star 42Per · The star 50Per · The star 52Per · The star Atik (ζPer) · The star εPer · The star ξPer

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California Nebula in RGB

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California Nebula in RGB

Some old data reprocessed today with what I have learned over the past year in PixInsight...

The FITS header is incorrect, but I recall doing these at F:5.6 on the Cannon 200mm

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When I first began imaging a year ago, I saw quite a few images coming through like this one, and I thought surely this must be a mistake, overhead clouds that I couldn't see with my eyes, or some defect in my flat field processing. But now, with more than a year of experience at this, I'm more likely to believe that a great deal of that cloudiness is actually up there.

... but I also believe I am very near the quantum readout limits of the sensor in these images, and to some extent, I really am just bouncing noise. Take a look at the right edge of the image from some distance back, and you'll see an unlikely geometric alignment of cloudiness...

Original
B
Final
C

B

Description: Being a bit more conservative with the stretching, and cropping away edge artifacts.

Uploaded: ...

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Status	Basic success
Started	...
Astrometry.net job	1354385
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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California Nebula in RGB

California Nebula in RGB

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Image Index:

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California Nebula in RGB

California Nebula in RGB

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Acquisition details

Description

Comments

Revisions

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Sky plot

Histogram

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