Pickering’s Triangle in Ha-OIII

Part of the larger Veil Nebula complex, these glowing filaments of ionised hydrogen are the result of shock waves from a massive supernova explosion estimated to have occurred around 5,000 years ago.  The original Ha image was taken over three nights in October 2015 and then supplemented with additional Ha and OIII data collected over six nights in September 2016.  Both sets of images were acquired from my observatory in Somerset.

Right ascension: 20h 48m 21s | Declination: +31° 29' 24" | Distance: 2,600 Light Years
Field of view: 42 x 28 arcmin

Camera: SBIG ST-10XME
Telescope: APM 152-1200ED F/7.9
Guiding: Starlight Xpress Active Optics SXV-LF-AO
Mount: 10Micron GM1000 HPS
Filters: Astrodon Ha (3nm), OIII (3nm)
Exposures: Ha 22 x 20 min, OIII 18 x 20 min
Total exposure: 13.3 hours
Scale: 1.15 arcsec/pixel
Image acquired: October 2015 and September 2016

Image capture with MaxIm DL, FocusMax, ACP; Image processed with MaxIm DL; PixInsight 1.8 Deconvolution; Photoshop CC 2014