Budget 150mm ERF .... quark

Frankenscope? Let's see it!***be advised that NOTHING in this forum has been safety tested and you are reading and using these posts at your own peril. blah, blah, blah... dont mess around with your eyesight when it comes to solar astronomy. Use appropriate filtration at all times...
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Solar B
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Budget 150mm ERF .... quark

Post by Solar B » Sat Sep 05, 2015 9:41 pm

I am looking at obtaining an affordable ERF for the 150 ....

Currently using the baader 35nm which is effective ... but I can see turbulence from
within the ota as expected ... I guess I'm just after something to take the edge
of the heat to use in conjunction with the 35nm

Would something like this be any good ? ... any other ideas would be greatly appreciated.

http://www.amazon.co.jp/PENTAX-SMC-PFフィ ... _rhf_p_t_2

The link hasn't worked but is for a 150mm uv camera filter.

Brian
" Gentlemen only ever use Refractors "

Solar-Cologne
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Re: Budget 150mm ERF .... quark

Post by Solar-Cologne » Thu Nov 12, 2015 12:49 pm

Hello,

which Baader ERF you mean ?
C-ERF or D-ERF ?
Theres a big different between.

sunny Greetings :D
Achim

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Re: Budget 150mm ERF .... quark

Post by marktownley » Thu Nov 12, 2015 7:25 pm

I'm going to try the appropriate Kodak Safelight Filter as an ERF on my C8, it will act to keep some IR out of the tube, and then a hot mirror to send the UV back out from the EP end. Not sure how optically flat it will be, probably not very, but it's a project for next years season.
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Re: Budget 150mm ERF .... quark

Post by Solar-Cologne » Fri Nov 13, 2015 5:34 pm

Hi Neo ?,

I know this Mod with inside ERF.
Yours is an older Baader C-ERF, and its the correct ERF for a PST-Mod, dark violett-red when you look through.
Why you use an additional B&W IR/UV-Cut ?

sunny Greetings :D
Achim

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Re: Budget 150mm ERF .... quark

Post by Solar-Cologne » Fri Nov 13, 2015 7:40 pm

oh, thanks, now i understand it.... :D

A very good Idea, i will speak with Oliver Smie and Wolfgang Lille about this Combination.
Do You have filtering Curves about this ?

sunny Greetings :D
Achim

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