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Wikipedia:
NGC 281 est une région HII située à environ 10 000 années-lumière de la Terre dans la constellation de Cassiopée. Elle est parfois officieusement appelée nébuleuse Pacman à cause de sa ressemblance fortuite au héros éponyme du jeu d'arcade Pac-Man. Cette nébuleuse en émission a été découverte par l'astronome américain Edward Barnard en 1881.
NGC 281, IC 11 or Sh2-184 is a bright emission nebula and part of an HII region in the northern constellation of Cassiopeia and is part of the Milky Way's Perseus Spiral Arm. Colloquially, NGC 281 is also known as the Pacman Nebula for its resemblance to the video game character. Edward Emerson Barnard discovered the nebula in August 1883.
Acquisition:
Rising Cam IMX571 color + Zenithstar73
iOptron CEM26 + iPolar
ZWO ASI224MC + WO Uniguide 120mm
NINA & PHD2
Séances:
- Nebuleuse: 4 et 16 septembre 2023 : Filtre IDAS NBZ / 300 sec x 60
- Étoiles: 20 septembre 2023 : Filtre UV-IR Cut / 60 sec x 70
Traitement/processing :
Siril, StarNet++ & Gimp
@Astrobox 2.0 / St-Jean-sur-Richelieu, Québec
AstroM1
270 subs at 15 seconds each in HA, pretty good but 15 seconds is too short, pattern noise still comes through.
HA 270@ 15seconds Gain 200 offset 5
20 darks at 62
Scope: Orion 8" f4 Astrograph with Baader Coma Corrector
Mount: iOptron iEQ45 pro
Camera: ZWO ASI183M non cooled
ZWO 8 position 1.25 filter wheel filter wheel
Schuler HA 9nm
Moonlite focuser CR2
Moonlight Hi Res stepper motor
MyFocuer Pro v2 (Robert Brown) controller
Home Observatory
Software: N.I.N.A., Sharpcap, CdC, Pixinsight, Photoshop, Team Viewer
still experimenting with light painting..
thanks to jorge for the help..
Taken with a Nikon D90 and a Nikon 50mm f1.4D..
Flickr Friday theme: PacMan
Thanks to everyone who took the time to view, comment, and fave my photo. It’s really appreciated. 😊
The Pacman Nebula has got its name because of its appearance that resembles the main character in the famous video game Pacman. Discovered by Edward Emerson Barnard in 1883, in the NGC catalogue, it is identified as NGC 281. The nebula is visible in the direction of Cassiopeia, about 9500 light-years from the Earth.
40 years ago PacMan captured our imaginations. Today's games are infinitely more intricate and next level absorbing. Having gaming so available at any time has it's problems - I think something has been lost when you don't need to scrounge coins and walk to the shops to play.
The Pacman Nebula, NGC 281, lies 9500 light years away in the constellation of Cassiopeia. The nebula contains several Bok Globules within which cold dense cosmic dust and gas collapses into new stars.
Acquisition:25x 300s Ha, 25x 300s (OIII), 25x 300s (SII). Calibrated with Darks, Flats and Dark Flats. Total integration 6.3 hours.
Location:12-11-2022. St Helens, UK, Bortle 7, 83% moon.
Equipment:Skywatcher Esprit100ED, Flattener, HEQ5pro. ZWO ASI1600MMpro, EFWmini. Baader NB filters.
Guiding:Skywatcher 9x50 Finder, SVbony UV-IR cut, ZWO ASI120MM.
Software:NINA, PHD2, EQMOD.
Processing:Siril, Affinity Photo 2 with StarXTerminator, Topaz DeNoiseAI and HLVG plug-ins.
The large dark nebula (NGC 281A that makes up this "gaping mouth" is a molecular cloud made up predominantly of molecular hydrogen, but also dust and other gases. New generations of solar systems are being forged within its cold interior. Once these young stars' fusion engines switch on they will irradiate their surroundings - heating up, ionizing and eroding away the remaining dark material from which they formed.
Originally the whole Pac-Man nebula would have been one large dark molecular cloud - the stars that formed early on at its centre having progressively hollowed out the centre of the nebula. The gas in and around this central region is ionized by the copious UV radiation emitted by the central open star cluster (IC 1490), causing it to glow and providing the light by which this narrowband image was taken.
Location Image: London UK
Date: Various dates throughout Sept and October 2015
Telescope: Skywatcher Espirt 100ED
CCD: QHY9S MONO CCD
Filters: Chroma 3nm Ha, Chroma 3nm SII and Chroma 3nm OIII ( Taken during High moon transit )
Ha 1200s x 18
SII 1200s x 10
OIII 1200s x 10
Mount Ioprton CEM60