CTB1 (G116.9+0.2) Galactic
Supernova Remnant in Cassiopeia
Technical Details:
Object: CTB1 (G116.9+0.2)
Galactic Supernova Remnant in Cassiopeia
Observing Site: Azor Observatory, Las Rozas, Madrid, Spain. 18.84 mag arcsec-2
Dates: September 13 and 19 (Ha), September 30 and October 1 (OIII), October 2nd and 3rd
(SII) 2008
Camera: SBIG STL-11000M @ -15ºC
Telescope: ASA N10 Astrograph @ f/3.6, Astrophysics AP1200 mount
Filters: Astrodon 6nm H alpha, OIII and SII
Exposure: 30 hours 30 minutes. Ha 660 min (22x30 min subs), OIII 690 min (23x30 min subs),
SII 480 min(16x30 min subs)
Processing Software: Maxim DL(data reduction and stacking), Photoshop (processing and
color)
Comments: HST Palette. OIII and SII (bin 2x2). CCD Commander used for unattended data
acquisition. Shown at 50% size