NGC 7538, the Bubble nebula, is an HII Emission nebula in the constellation of Cassiopeia around 7,100 to 11,000 light years from Earth. The bubble is created by intense radiation and stellar winds from nearby stars. This was collected over several nights this past month from my light polluted skies of central Florida
Ha 20min subs totaling 4 hours.
OIII 20 min subs totaling 3 hours.
SII 20 min subs totaling 3 hours.
Imaging camera: QSI 683 wsg-8
Imaging Telescope: Astro- Tech 8 "Ritchey-Chretien with a focal length of 1625mm (f / 8)
Losmandy G11 with Gemini II equatorial mount
Taken October 10, 11, 26 and 27, 2013