Is it massive? Or is it voluminous? Either way, your screen shot does nothing to convey either. =-\
I found one the other day that I was 115 ls away from but it had the apparent size of most stars are when you're 4ish ls away. Looking at its stats it had a radius of 25 solar radii, and a mass of .25 solar masses. I keep meaning to head out to VY Canis Majoris, but I've not gotten around to it.
This was taken at about 400 ls away. It was mostly the color that threw me off