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Using Astronomik 12nm Ha Filter instead of UV/IR block for Quark?

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#1 moshen

moshen

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Posted 25 May 2019 - 04:59 AM

I'm getting a Quark and already have a 2" Astronomik 12nm Ha Filter. I'm wondering if I can use this in front of my Quark & 2" diagonal for my 90mm refractor instead of buying a Baader UV/IR block. It seems functionality it would be the same as it rejects all UV & IR:

 

https://www.astronom...r.html?size=134

 

Anyone know of any gotchas to doing this?


Edited by moshen, 25 May 2019 - 05:00 AM.


#2 MalVeauX

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Posted 25 May 2019 - 06:36 AM

Heya,

 

If it's dielectrically coated and hard coated, it should be ok. Awful expensive filter to use as a D-ERF in this case though, compared to a cheap UV/IR block filter.

 

Very best,




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