Meade 911N Narrowband SCT thread filter. These are out of production and hard to find on the used market. This filter is designed to enhance visual contrast in light polluted skies. See description here (second filter down page): http://www.company7.com/library/meade/C ... 08-109.pdf
$100 including shipping CONUS and paypal. Or, $90 if picked up locally (Baton Rouge).
Buy and sell astronomy or space items.
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