SNR G119.5 +10.2 or CTA1
This is SNR G119.5 +10.2 or also known as CTA1. It is a faint supernova remnant near Cepheus that is estimated to have gone supernova about 10-14k years ago. A faint pulsar in the core is pushing gases outward from its core. It was first estimated to have a pulsar back in 1960 when discovered but nothing was found, not until 2008 was it confirmed to have a faint signal.
NGC40 is the small planetary in this field which is often captured, but the region is full of activity from this Supernova as well, which is not as commonly captured. 40hrs of imaging was captured across HSO filters using a fast F/2.2 RASA astrograph and ASI6200mm camera. Captured from my backyard observatory in Pendleton, Oregon.
Location
Location: Pendleton, Oregon
Observatory: ASG Dual Dome Observatory
Bortle: 4
Equipment
Telescope: Celestron RASA 11 (620mm focal @ f/2.2)
Filters: Astronomik MaxFR 50x50mm Square SHO & Deep Sky RGB
Main Camera: ZWO ASI 6200mm-pro Monochrome
Tilt & BackFocus Adjuster: ASG Electronically Assisted Tilt (EAT)
Mount: iOptron CEM 120EC
Guide Scope: William Optics 50mm Uniguide
Guide Camera: ZWO ASI 290mm-mini
Processing Software: Captured with NINA, Stacked with Astro Pixel Processor, Processed in PixInsight
Acquisition
Date: September, 2025
Ha: 180 x 300 seconds
Oiii: 200 x 300 seconds
Sii: 53 x 300 seconds
Total Integration time ~36 hrs
Calibration Bias: 20
Calibration Dark: 20
Calibration Flats: 20 for each filter