[Aavso-photometry] Johnson Filters

[Walter MacDonald]

I see that Optec is selling off its 1" Johnson filters for US $50 each.  
That's a good deal if you're looking for one of those filters! (Page is 
here: http://www.optecinc.com/optec_036.htm )

-- 
Walter MacDonald II [MDW]
Winchester Observatory
Winchester, Ontario, Canada.
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Email: walter at starlightccd.com

Winchester Electronics: http://www.starlightccd.com
My Personal Web Site  : http://www.starlightccd.com/walter
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