scottpfe
The Veil Nebula region.
40 times 180 seconds exposures each of Ha, S2 and O3 narrow band filters, combined in Pixinsight using only Ha and O3. Radian Raptor telescope with ZWO AM5 mount and ZWO 2600MMP cooled camera.
Ha filters show hydrogen gas as red and O3 filters show oxygen gas as blue.
From Wikipedia:
The Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus.
The source supernova was a star 20 times more massive than the Sun which exploded between 10,000 and 20,000 years ago. At the time of the explosion, the supernova would have appeared brighter than Venus in the sky, and visible in the daytime. The remnants have since expanded to cover an area of the sky roughly 3 degrees in diameter (about 6 times the diameter, and 36 times the area, of the full Moon). While previous distance estimates have ranged from 1200 to 5800light-years, a recent determination of 2400 light-years is based on direct astrometric measurements.The distance estimates affect also the estimates of size and age.
The Veil Nebula region.
40 times 180 seconds exposures each of Ha, S2 and O3 narrow band filters, combined in Pixinsight using only Ha and O3. Radian Raptor telescope with ZWO AM5 mount and ZWO 2600MMP cooled camera.
Ha filters show hydrogen gas as red and O3 filters show oxygen gas as blue.
From Wikipedia:
The Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus.
The source supernova was a star 20 times more massive than the Sun which exploded between 10,000 and 20,000 years ago. At the time of the explosion, the supernova would have appeared brighter than Venus in the sky, and visible in the daytime. The remnants have since expanded to cover an area of the sky roughly 3 degrees in diameter (about 6 times the diameter, and 36 times the area, of the full Moon). While previous distance estimates have ranged from 1200 to 5800light-years, a recent determination of 2400 light-years is based on direct astrometric measurements.The distance estimates affect also the estimates of size and age.