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Old 16-01-2011, 11:21 PM
Hans Tucker (Hans)
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Hans Tucker is offline
 
Join Date: Jul 2008
Location: Melbourne
Posts: 2,475
Baader Planetarium UV-IR-Cut Filter

NIB - 1.25" Baader Planetarium UV-IR-Cut Filter
  • Extremely Sharp Cutoff at 690nm (leaves all the visible red, including the important 656nm H-alpha emission line).
  • Sharp cutoff below 400nm. Eliminates violet halos around bright stars (more effectively than simpler so-called Minus Violet photographic filters).
$80 + Postage

Last edited by Hans Tucker; 27-01-2011 at 08:20 AM.