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Old 14-05-2009, 04:15 PM
sadia
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sadia is offline
 
Join Date: Mar 2009
Location: melbourne
Posts: 287
Needs some advice on H-alpha filter

Hello,

I am thinking of buying a H-Alpha filter after seeing some amazing post by diffrent forum member. Knowing little about H-Alpha filter I am not sure about few things:

1. First of all I use QHY8 with the default IR filter nosepiece. I use it with either WO .8x FR or Baader MPCC. So my first question once i get a filter where do i place it? Do i need to replace the default IR or do I thread it some other place like in between Qhy8 and Focal reducer/MPCC?

2. I am quite sure I need a 2" filter but not sure of what kind of filter mounting should i order it with. For example Baader ones mentions about 2" cell where Astronomik ones mentions about 2"Cell or T threaded ones.

3. Will QHY8 have any impact on Baader vs Astronomik decision?

4. What should i consider when deciding between 13nm vs 6nm?

all together a bit lost, please help .

Regards
Sad
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