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Posted on 2014-12-08 by mosqueeto

http://www.smbc-comics.com/?id=3564#comic

http://www.smbc-comics.com/?id=3564#comic

NSA explained

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mosqueeto

Nope, it’s the Lagoon Nebula 2021-07-29
This is not the Rosette Nebula, as I first stated. Instead, it is the Lagoon and Triffid Nebulae — got my wires crossed. This image is a 300 second single exposure. The color is somewhat arbitrary… I also took several 1 second shots trying to frame things; for grins I stacked them and you can […]
The Bubble Nebula (NGC 7635) 2021-07-25
NGC 7635 is actually a rather small object, less than a quarter degree across. My imaging setup has a field of view of 4×2.72 degrees, and the object is a little above the center. The open cluster in the upper right quadrant is M52. Below is a closer crop of the above image, showing the […]
North American Nebula, processed 8 different ways 2021-07-20
This is the same data (27 exposures, 3 minutes each) as in the previous post. Four different ways of combining the exposures, and two different methods of removing background coloration (an overwhelming green from the light pollution filter I was using) from the resulting image. I think the second one (“integration-ABE1-“) is best, but I […]
Colorless North American Nebula 2021-07-18
This is the North American Nebula, with a bit of the Pelican Nebula at the bottom. A stack of 27 3-minute exposures. I’m not sure why there isn’t more color; color still remains a bit of a mystery to me…

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This is the personal blog of Kent Crispin. Unless otherwise noted, all content is authored by me, and is licensed under a Creative Commons Attribution 4.0 International License.

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