Re: ATM Beginner: dictionary pse

["Kreig McBride" <astroguy@nas.com>]

BFL = Back focal length

-----Original Message-----
From: Stathis Kafalis <dobsonstathis@planet-interkom.de>
To: ATM <atm@shore.net>
Date: Sunday, May 04, 2003 5:30 AM
Subject: Re: ATM Beginner: dictionary pse


>
>hogging: removing glass to get the concave courve (rough grinding stage)
>ROC: Radius of Curvature. For mirrrors = 2* focal length
>TOT: Grinding or polishing with Tool On TOP (opposite is MOT= Mirror On
TOP)
>COC: Working Center over Center
>TDE: Turnded Down Edge
>KE: Knife edge (Foucault)
>BFL: ? don't know either
>
>p.s.
>You guys at La Palma must have nice observing conditions
>
>
>Stathis Kafalis
>http://www.geocities.com/dobsonstathis
>
>