Hi Reiner,
I have only one sketch of Abell 21 from the late 90's with my 20" f/5:
1049 1050
"Big and surprisingly bright at 92x without a filter, and adding the OIII brought it to life....
Type: Posts; User: Howard B; Keyword(s):
Hi Reiner,
I have only one sketch of Abell 21 from the late 90's with my 20" f/5:
1049 1050
"Big and surprisingly bright at 92x without a filter, and adding the OIII brought it to life....