UV/IR cut on KG3 glass - Infrared Blocking Filter

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BelOptik_Oliver

UV/IR cut on KG3 glass - Infrared Blocking Filter

Post by BelOptik_Oliver »

Hi everyone...

Infrared Blocking Filter - UV/IR cut on Schott KG3
http://en.beloptik.de/uvxir_cut_on_kg3_ ... ilter.html

Much further IR blocking range than classic UV/IR filter coating on BK7 or B270 substrates.


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Re: UV/IR cut on KG3 glass - Infrared Blocking Filter

Post by marktownley »

This is perfect! thanks! :)


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Re: UV/IR cut on KG3 glass - Infrared Blocking Filter

Post by swisswalter »

Hi Oliver

thank you very much, perfect. But there are UV/IR cuts which block 393 and 396. I would take just an IR block for the CaK jobs. The D-ERF from Baader blocks < 400 nm too


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Re: UV/IR cut on KG3 glass - Infrared Blocking Filter

Post by BelOptik_Oliver »

Hi Walter

CaK +H could almost going - see attachment...
So far I didn't yet checked this for calcium.



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Re: UV/IR cut on KG3 glass - Infrared Blocking Filter

Post by marktownley »

Intersting curve there Oliver regards the CaK - nice steep slope at 393nm, could have potential to tighten up the passband of a Baader K-line...

I'm away from home at the moment, but when I return I shall be placing an order for one of these filters.


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Re: UV/IR cut on KG3 glass - Infrared Blocking Filter

Post by sullij1 »

Very interestng, I shall be watching Mark's results. Thanks Oliver!
( I knew you would have good suggestions :))


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Re: UV/IR cut on KG3 glass - Infrared Blocking Filter

Post by Merlin66 »

I've ordered one of the UV-IR KG3 filters to test and trial on the various Ha scopes I have....


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Re: UV/IR cut on KG3 glass - Infrared Blocking Filter

Post by marktownley »

Excellent stuff Ken, I will be doing the same in the next couple of days, we will have to compare notes ;)


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Re: UV/IR cut on KG3 glass - Infrared Blocking Filter

Post by marktownley »

Hi Oliver,

I have a question - what thickness is the KG3 in this filter?

Thanks,

Mark :)


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Re: UV/IR cut on KG3 glass - Infrared Blocking Filter

Post by MjrTom »

Very interested in the outcome. I am looking for an ITF so I can re use the blocking filter off my PST (an original style USA one with no separate ITF) instead of using the Lunt B600 off my LS35T.

Mark


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Re: UV/IR cut on KG3 glass - Infrared Blocking Filter

Post by swisswalter »

Hi Oliver

thank you for that nice curve. It looks indeed promissing. Let's see what the firt results from Mark and Ken are


Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

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BelOptik_Oliver

Re: UV/IR cut on KG3 glass - Infrared Blocking Filter

Post by BelOptik_Oliver »

Hi Mark

Thickness of filter is 2mm +/-0.1mm tolerance.

@Ken
Thanks! Filter will be sent today.


colinbm

Re: UV/IR cut on KG3 glass - Infrared Blocking Filter

Post by colinbm »

Oliver I will order one mid next week too please.
Can you let me know the postage to Australia.
Col


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Re: UV/IR cut on KG3 glass - Infrared Blocking Filter

Post by marktownley »

Hi Oliver, thanks for that. Looking on your website can't see how to pay - can I paypal you?

Mark


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Re: UV/IR cut on KG3 glass - Infrared Blocking Filter

Post by BelOptik_Oliver »

@Col
Makeable - shipping to Australia is 5.50 EUR (registered mail)

@Mark
Yes, I accept Paypal in EUR & USD.


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Re: UV/IR cut on KG3 glass - Infrared Blocking Filter

Post by sullij1 »

Hello Oliver,

I just sent you an email regarding the KG3 filter. Please email me instruction for payment.

Thank you,

Joe


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colinbm

Re: UV/IR cut on KG3 glass - Infrared Blocking Filter

Post by colinbm »

Thanks Oliver
I will send am order by email mid next week thanks.
Col


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Re: UV/IR cut on KG3 glass - Infrared Blocking Filter

Post by BelOptik_Oliver »

:) Thanks Joe & Col


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Re: UV/IR cut on KG3 glass - Infrared Blocking Filter

Post by swisswalter »

Hi Oliver

I'm convinced too and will send you an order


Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

from 7 am - 7 pm http://www.nanosys.ch

from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)
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