; psc_off.sfa - Thomas G. Ferguson, Abrams Planetarium, Feb. 2002
; psc_off.sfa - John French, Abrams Planetarium, Mar. 2002
; psc_off.sfa - Flamsteed drawings - Chris Anderson, Falkner Planetarium,  2001
; This file erases the artwork for PSC.

0:00 buttons 7,10 play ./psc_on
     buttons 7,10 label 'PSC   picO'
     declare global PSC
     adjust PSC brightness 0 /until +2
0:02 erase galactic PSC
     end