EDIT:
Today's APOD
Honoured & thrilled to have my 3rd APOD!
Could't have done it without all the help and motivation from all you good folks here on IIS.
This is likely to be the first ever high res colour image featuring the whole of this huge SNR in Ara.
It was originally thought to be a ring nebula surrounding the Wolf-Rayet star WR 90, expanding into a pre-existing cavity created by the supernova remnant 343.0-06.0.
However, current research suggests that is much closer to us than WR90, so is an Ancient SNR in it's own right.
I've searched and searched the web for examples but have only found 2-3 widefield camera images, including
one by Greg Bradley here on IIS.
This is a six panel mosaic in HaRGB data gathered over 6 months from my backyard in suburban Melbourne, Australia.
I first noticed this SNR on an Ha Galaxy survey, but for some reason it's been largely overlooked by amateur astrophotographers.
Credit is also due to John Gleason, who
captured the region in Ha 4 years ago, but I wanted to create a colour image, so 208 subs later - here it is
Took forever to register, and process, and shooting RGB under LP is not for the feinthearted!
Anyway, thanks for looking, I hope you enjoy the
image 