Warren - Stargazing since the 60's! Scopes: ETX-LS6, ED80T, AT6RC, Lunt LS60T, C9.25 Mounts: Atlas EQ-G, Vixen Portamount II Cameras: Atik 314L+,DMK31AU03,SSAG, ASI120MC Filters: Astrodon LRGB, Orion HA, SII, OIII Acc: Orion 5 place Filter wheels x 2, Flatman Primary Imaging site: Bortle Scale Class 6 Red Zone http://astrobin.com/users/rigel123/
Robert The more I learn, The more there is to learn! Orange Zone Dark Site 3 Mounts 4 Imaging Cameras 3 Guide Cameras OTA's = yes
Quote:That one will work but this is the one most of us use:http://www.telescope.com/Astrophotography/Autoguiding-Solutions/Orion-Magnifi...
t = to / ( 1 - v2 / c2 ) 1/2
Meade 2080 8" SCT OTA w/OPT SCT Crayford-style focuser
Brandon Vernonscope 80 mm refractor piggyback mounted
Canon 350D (astro-modified)