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ZWB UV-pass filter for astrophotography?

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#1 NenoVento

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Posted 17 January 2020 - 04:41 AM

Hi all,

 

Have any of you tried a ZWB UV-Pass filter for astrophotography?:

 

https://es.aliexpres...2969203564.html

 

ZWB1-UVpass-49mm.jpg

 

This is its theoretical transmitance graph:

 

UV-pass.jpg

 

As you can see, the ZWB1 filter seems to blocks quite nicely the visible spectrum (although 380nm lies rather close to dark blue zone on the one sithe and there is an IR window that reaches a 30% overlapping the 700 nm zone). I am particularly interested on the subject of trying to capture Venus' clouds, but honestly right now cannot afford to get an IDAS, Baader or astrodon UV-pass filter.

 

Regards,

 

Carlos



#2 happylimpet

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Posted 17 January 2020 - 04:47 AM

You'll need to use an IR blocking (but UV transmitting) filter too, which will be tough to find.



#3 astrodom

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Posted 17 January 2020 - 09:06 AM

I'm have not heard anything about this filter, but you can buy a zwo 2" UV/IR cut filter for AP for less than 50 bucks.  I think this or a similar filter would be less risky for your AP needs.  Good luck.




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