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Sourcing 2 inch UV IR cut filter

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6 replies to this topic

#1 Gert

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Posted 04 May 2021 - 01:35 PM

Hello All,

 

The friendly people at Amazon offer a nice variety of astro 2inch UV/IR cut filters (aka lumincance).

Even though they're not an astro shop! How nice.

Product ranges from $25 svbony to $135 baader.

  • Where is the sweet spot between price & quality?
  • Do the cheap ones perform? (or are they just cut bottoms from beer bottles?

I plan to use the 2" filter in the ZWO Canon adapter filter drawer very close to the focal plane (meaning only small local diameter of the filter glass will intersect the ray bundle to each point in the focal plane) So I am not expecting a huge problem with glass flatness (1/2L over a local area is probably good enough).

 

What do the experts recommend?

Thanks & Clear Skies,

Gert

 



#2 pyrasanth

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Posted 04 May 2021 - 01:43 PM

I have a full range of the Baader UVCUT/IR filters from 1.25" through to 50x50 mm square. They have proved good quality filters with no halo's on bright stars- high recommended.



#3 Redhook

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Posted 04 May 2021 - 01:47 PM

I bought the Solomark. Seems to work pretty good. I has seen on here that somebody tested one and it only blocks a little over 80% of uv and not the 99% claimed. I'm pretty sure they just copied the Baader description.

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#4 KTAZ

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Posted 04 May 2021 - 01:54 PM

I have a full range of the Baader UVCUT/IR filters from 1.25" through to 50x50 mm square. They have proved good quality filters with no halo's on bright stars- high recommended.

+1 on the Baader



#5 Remenakb

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Posted 04 May 2021 - 02:45 PM

Baader. Buy once cry once. smile.gif



#6 Ittaku

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Posted 04 May 2021 - 06:29 PM

Astronomik. Choose a suitable bandwidth from their choice of 3 luminance filters depending on your optical and imaging setup. https://www.astronom...tml?___store=en
I have both astronomik and Baader.

#7 Lucky 777

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Posted 04 May 2021 - 06:31 PM

I have the Baader...no regrets.




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