NGC 281, IC 11 or Sh2-184 is a bright emission nebula and part of an H II region in the northern constellation of Cassiopeia and is part of the Milky Way's Perseus Spiral Arm. This 20×30 arcmin sized nebulosity is also associated with open cluster IC 1590, several Bok globules and the multiple star, B 1. It collectively forms Sh2-184, spanning over a larger area of 40 arcmin. A recent distance from radio parallaxes of water masers at 22 GHz made during 2014 is estimated it lies 2.82±0.20 kpc. (9200 ly.) from us. Colloquially, NGC 281 is also known as the Pacman Nebula for its resemblance to the video game character.(Source: Wikipedia)
Acquisition
Date2021 September7 - October4Bortle scale5 to 6Exposure20h30H-alpha66 x 300sOIII 61 x 300sSII89 x 300s
Equipment
FacilityPeepoodo Remote Observatory Location Graz, AustriaTelescopeLacerta Newton 200/800Imaging camZWO ASI 1600MM CoolCorrector GPU Optics coma corrector 1:1 Mount SkyWatcher AZ-EQ6 ProFilters Optolong H-Alpha 7nm Optolong OIII 6,5nm Optolong SII 6,5nmGuiding camZWO ASI 120MM MiniGuiding SkyWatcher Finder 8x50AccessoriesLacerta Flatfield box Lacerta MFOC ProcessingGimp, SirilAutomationStellarmate, Ekos & Kstars