[OM] Re: Auto Tubes

[Wayne Harridge]

> John A. Lind <jlind@xxxxxxxxxxxx> wrote:
> 
How much one needs a "matched set" depends on how finicky one is about 
having perfectly matched optics in them.  Me?  I'm very finicky about 
optical performance (downright AR), but for some reason have never worried 
about perfectly matched extension tube optics (and likely never will).

Yeah, I normally blow through them so that I know I've got fresh air in them 
each time I 
mount them.

Wayne Harridge

http://lrh.structuregraphs.com

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