NGC7635 - The Bubble nebula

NGC 7635, also called the Bubble Nebula, Sharpless 162, or Caldwell 11, is a H II region emission nebula in the constellation Cassiopeia. It lies close to the direction of the open cluster Messier 52. The "bubble" is created by the stellar wind from a massive hot, 8.7 magnitude young central star. The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow. It was discovered in 1787 by William Herschel. It is located approx 7800 light years away.

Details
M: Avalon Linear Fast Reverse
T: ODK10
C: QSI683 ws-g with 3nm narrowband filters.

16x1800s Ha
17x1800s OIII
18x1800s SII

25.5 hours total integration time.

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The Bubble nebula in mono

This was taken with a different telescope than the image above.

Details
M: Avalon Linear Fast Reverse
T: Celestron C9.25
C: QSI690-WSG with 3nm Ha filter

55x1800s Ha totalling 27.5 hours of data.