Search found 54 matches

by RodAstro
Sun Nov 12, 2017 12:53 pm
Forum: This is SolarChat !!
Topic: multiple images
Replies: 25
Views: 2434

Re: multiple images

yep ghosting is a problem but I have found CPL filters can remove nearly all but these secondary images then the contrast improves, band pass I am not sure about yet, I am getting good prominences but surface detail is not good yet I can see some. Im not sure how good my seeing is and there is littl...
by RodAstro
Sun Nov 12, 2017 12:04 pm
Forum: This is SolarChat !!
Topic: multiple images
Replies: 25
Views: 2434

Re: multiple images

Yep thanks for the reply Mark that is the conclusion I am coming to. I have two sets of these and both are the same, although the reflections in one is slightly closer than the other. It is a pity the elements could not be separated and mounted separately then the reflections could be removed. What ...
by RodAstro
Sun Nov 12, 2017 10:02 am
Forum: This is SolarChat !!
Topic: multiple images
Replies: 25
Views: 2434

Re: multiple images

Ok simple diagram as it is a simple setup
by RodAstro
Sun Nov 12, 2017 12:17 am
Forum: This is SolarChat !!
Topic: multiple images
Replies: 25
Views: 2434

multiple images

Ha image 700mm inside.jpg Hi new to the forum I have been reading for a while and trying to glean info on the Omega H-alpha filters I have been trying to build a system using these filters and am having problems with the front filter etalon. It seems to have multiple images in one direction all the...