Last updated: 31 August 2008
Subject: ETX-125 Hartman Mask Pattern Sent: Saturday, August 30, 2008 07:42:04 From: Tom McKechnie (firstname.lastname@example.org) In my current move toward astrophotography, I found a need to create a Hartman Mask. Paul Russell [1ponders], of the Iceinspace forums (Austraila) published an excellent article on how to draw the pattern (Secret of the Hartmann Mask... Revealed!, http://www.iceinspace.com.au/index.php?id=63,187,0,0,1,0). I drew up the pattern with the specifics of the ETX-125 and after obtaining Paul's permission would like to share the drawings. The PDF will need to be scaled through the print scale function to obtain the correct dimension - a dimension is include to allow this. The DXF CAD output file (zipped) should print 1:1. Regards, Tom McKechnie
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