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? on Filters

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#1 Dave M

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Posted 21 March 2013 - 12:50 PM

I was wondering if anyone can tell me anything about these Itorex filters. These were in a eyepiece case i got in a recent telescope and accessories package deal.
The seller had a original invoice where he had purchased these from Meade in December 1981.
The filters dont have any threads, are 1 5/8" diameter.
Were these some kind of drop in filter ?
Appreciate any info that can be provided.. :)

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#2 Dave M

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Posted 21 March 2013 - 12:52 PM

pic #2

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#3 Nightfly

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Posted 21 March 2013 - 05:29 PM

I believe that the back end of all SCT's have a recessed area to hold series 6 filters. I have never used them, but this allows one to attach the filter to the tail end of the SCT and then attach desired photo-visual accessories.

My circa 1983 Meade SCT has it and Meade sold these filters as well.

#4 Dave M

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Posted 21 March 2013 - 09:30 PM

Thanks! Nightfly, that makes sense then since the guy was into imaging with a 8" SCT.






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