This supernova remnant is around 11 lightyears across and 6500 lightyears distant. At the centre of the nebula is a pulsar, a neutron star rotating at 30 times per second. The pre-supernova progenitor star may have had a mass around 10 times that of our sun.
This is the result of just over 13h of narrowband data capture, through Ha, OII and SII filters, over five evenings in November and December 2022. Hydrogen was mapped to red, sulphur to Green and Oxygen to Blue. A ZWO ASI2600MM Pro camera was used through an 8-inch Teleskop-Service Ritchey-Chretien reflector, from Horsham.
Date: 10/12/2022
Location: Horsham, West Sussex
Photographer: Graham Wilcock