The 'Mask' nebula is seen at the upper part of the image ,also called CVMP 1.
It is a planetary nebula located about 6,500 light-years away in the southern constellation of Circinus.
This nebula was cerated when an old red giant star blew off its outer layers in a wind of dust and gas.

The left behind star - is still energetic enough to illuminate this ejected matter, hence the red nebula.

At the lower part of the image we can see another smaller ring shaped planetary nebula called PK 321+1.1

The bright star on the Left side is HIP 74305.

Please see the next images for a closer look at these nebulae.

L-HaR- RGB image
Ha-2 HRS bin 2
L - 4 HRS bin 1
RGB - 30 min each bin 2

16" F8 Hypergraph telescope

Imaged from Tivoli farm Namibia