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Flying Bat & Squid Nebulae

Taking a bit of a break from Cygnus for a moment, this image is from a region in neighboring Cepheus. This is another bi-color narrowband image with ionized hydrogen assigned to red, and ionized oxygen assigned to both green and blue (called the HOO palette). The red nebula is called the Flying Bat Nebula, and has been known about for a long time. The blue Squid Nebula however was only discovered in 2011 because it's extremely faint. I used this image as more of a test to see if I could bring it out. To put it in perspective, of the 28 hours and 41 minutes that went into this image, 21 hours and 9 minutes of that was through the Oxygen III filter.

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Uploaded on August 4, 2022