Sh2-129 Squid Nebula (HOO with RGB stars) from multiple nights in 2022.

29hrs of data gathered. Some of it very difficult to process as the ZWO 7 Nm OIII filter allowed the brightest stars to bloat horribly. The blue nebulosity behind those bright stars has been lost in the processing.

I am making a case, to myself, for the purchase of an Astrodon 3Nm OIII filter because I have other targets whose data could be greatly improved with tighter control of the bright stars.

By Barry Trudgian