03/12/2019
NGC 7635, Bubble Nebula, 31.08.2019. - Petrova gora (Croatia), 01.12.2019. Zagreb (Croatia)
NGC 7635, also known as the Bubble Nebula, Sharpless 162, or Caldwell 11, is an H II region[1] 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, SAO 20575. 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
Telescope: Skywatcher ED80 Pro
Frames: 11x1200" RGB with Qhy8 and 95x180" with ASI1600mm pro and 7nm Baader Ha filter
Camera: QHY8 and ASI1600mm
Mount: Skywatcher NEQ6 pro
Guiding: Skywatcher 50mm finderguider with QHY5L-IIc
Location: Petrova gora (Croatia), Zagreb