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Thanks for this David.
At the moment we use a neutral density filter as a quick fix, but I wanted
the increased bulb life too.
I'm probably going to hack one apart soon but I just hoped for the
reassurance that someone else had gone in there first.
Thanks again,
--
Harry White, Concept Development Director
Techniquest, Stuart Street, Cardiff, UK. CF10 5BW
Tel: +44 (0) 29 20 475 475, Direct: +44 (0) 29 20 475 464
Fax: +44 (0) 29 20 482 517
Web: http://www.techniquest.org
Techniquest is a Company Limited by Guarantee,
registered in England and Wales, no. 1955696
It is a registered as a charity, no. 517722
> From: David Taylor <[log in to unmask]>
> Reply-To: Informal Science Education Network
> <[log in to unmask]>
> Date: Tue, 2 Nov 2004 08:58:36 -0700
> To: [log in to unmask]
> Subject: Re: Using Data Projectors in Starlab
>
> ISEN-ASTC-L is a service of the Association of Science-Technology Centers
> Incorporated, a worldwide network of science museums and related institutions.
> *****************************************************************************
>
> Harry,
>
> What about putting 2 sheets of polarizer material over the lens
> and gradually turning them until you get the amount of light
> transmission you want?
>
> Dave Taylor
>
>
>> From: Harry White <[log in to unmask]>
>> Date: Tue, 2 Nov 2004 16:41:09 +0000
>> To: <[log in to unmask]>
>> Subject: Using Data Projectors in Starlab
>> *********************************************************************
>>
>> Does anyone out there use data projectors in their Starlabs ?
>>
>> If so, have you investigated de-rating the bulb at all ?
>>
>> The projectors are far too bright to go happily with the starfield projector
>> and reducing the current should greatly increase the bulb life.
>>
>> I havenšt tried it yet and I suspect some clever electronics will shut the
>> projector down as soon as the current falls.
>>
>> Has anybody out there tried it ?
>>
>> Thanks
>> --
>> Harry White, Concept Development Director
>> Techniquest, Stuart Street, Cardiff, UK. CF10 5BW
>
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