Object name: NGC7640
NGC 7640 is a nearby near edge on galaxy (nearby for galaxies I normally image) in Andromeda. I was unable to find an agreed upon distance for this one. Some place it as close as 19 million light-years while the furthest estimates put it a bit over 32 million light-years. Due to my limited resolution of stars in the galaxy, I'd have to prefer the further estimates. The reason it made my to-do list was the odd extended southern arms with a hole in them. I saw the hole in the blue POSS II plate. Though it was more pronounced in my image than I expected, looking almost like a dust donut in my flat that wasn't in the image. It is a real feature, cause unknown. It may just be an illusion due to our viewing angle of the very extended arms. NED classes it as SB(s)c while the NGC project says S(B)b. Both indicate it as a rich source of HII. I should have read that last year when I took the image. I'll have to put it back on the list, at least for HII purposes later this summer. It was discovered by William Herschel on October 6, 1784. It is in the second H400 program.