ZWO OAG-L with 12*12 Prism & 1.25" Holder - OAG-L type-binocular-accessories 10X–200X MAGNIFICATION WITH PROFESSIONAL-QUALITY OPTICS:

10X–200X MAGNIFICATION WITH PROFESSIONAL-QUALITY OPTICS: 5-element IR-cut glass lens and 3

37hr45m for broadband/narrowband blend

00″ 317mm\12

About the TeleVue TV76 APO Refractor Telescope - Evergreen

and innovative features that fully support large telescopes

ZWO OAG-L with 12*12 Prism & 1.25" Holder - OAG-L type-binocular-accessories 10X–200X MAGNIFICATION WITH PROFESSIONAL-QUALITY OPTICS:An OAG, or off axis guider, offers a better way to guide when used with longer focal length telescopes when compared to traditional guide scopes, which can add unwanted weight, balance and possible flexure issues. An OAG also lets you guide at the same focal length as your telescope. This is especially important to focal lengths beyond 1000mm. The ZWO OAG L Off Axis Guider has a large prism size of 12*12mm, far bigger than standard ZWO OAG's prism