Smallest aperture in my experience is 16" under good seeing. Knowing the location and the blinking effect makes it much easier to catch the PN. Only visible with [OIII] blinking (star), never as an...
Type: Posts; User: Uwe Glahn; Keyword(s):
Smallest aperture in my experience is 16" under good seeing. Knowing the location and the blinking effect makes it much easier to catch the PN. Only visible with [OIII] blinking (star), never as an...