Baader 1.25 Inch Narrowband filters

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Baader 1.25 Inch Narrowband filters

07-31-2007, 09:39 AM

Junior Member

Join Date: Nov 2006

Location: Norway

Posts: 8

Baader 1.25 Inch Narrowband filters

Hi, does anyone know if these narrowband filters from Baader are parfocal? Can?t find any information on that.

http://www.astrovid.com/prod_details.php?pid=3367

Is it just the thickness that does filters parfocal?

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