Do any of the folks here recall Celestron making an Ultima barlow that was threaded for filters? I SEEM to recall seeing one several years back. If such a critter there be, I'd find it very useful with my binoviewer setup, for filtering two eyepieces with one filter. Thanks for any memories you may be able to offer!
ULTIMA WITH THREADING?
Started by Larry Seguin, 01/04/2010 11:02PM
Posted 01/04/2010 11:02PM
Opening Post
Funding Member
