Re: Preview device

["Willem-Jan Markerink" <w.j.markerink@xxxxx>]

On 23 Feb 00 at 20:13, chaz quality72 wrote:

>      Has anyone made an IR preview device?  If so what IR lens did you use?  
> I put a Tiffen #87 on a night scope but, on clear days it is not enough 
> (scope shut down and I thought I "fried" it).  Is there something I can 
> attach to control aperture or am I just going to have to use a darker filter 
> on clear days?  Any suggestions?

This 'too bright/shut down' feature is why I recommend the cheapest 
unit possible, with M42 lens....those can be stopped down (previous 
models came with an ordinary photo lens, current models only allow 
full-aperture, but finding an old M42 photo lens on a second hand 
photo market should be easy....a 50mm works fine). 

--                 
Bye,

Willem-Jan Markerink


      The desire to understand 
is sometimes far less intelligent than
     the inability to understand


<w.j.markerink@xxxxx>
[note: 'a-one' & 'en-el'!]
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