Includes 8-inch f/6 optical tube assembly with 1 1/4-inch focuser, 25-millimeter Kellner eyepiece
, 6 x 30 finderscope, and Astrolight Altazimuth mount.
Each scope includes a 20-mm 1 1/4-inch Kellner eyepiece
95 with a 12-mm Kellner eyepiece
and dual cross-hair reticle.
The 6-inch f/8 parabolic mirror comes with a Rigil QuickFinder, 18-mm Kellner eyepiece
, rack-and- pinion focuser, and an instructional videotape, all for $379.
Rainbow Optics makes no claims for the Kellner eyepiece
- which is a standard imported unit offered to observers who may not have a 1 1/4-inch ocular in their kits.
I've found, for example, that a 9-mm Kellner eyepiece
produces sharp, high-power views rarely attainable in my larger reflectors.
The telescope is shipped with two Kellner eyepieces
, with focal lengths of 25 and 10 mm, yielding 26x and 65x respectively.
The COSMOS 90GT WiFi Telescope comes with a StarPointer red-dot finder, 25- and 10-mm Kellner eyepieces
, and a rubberized accessory tray with an angled smartphone platform.
That said, it's worth noting that the scope's long focal ratio is very forgiving of eyepiece design, and I also had very good views with much older Plossl and orthoscopic eyepieces, and even lowly Kellner eyepieces
delivered pleasing views.
Two Kellner eyepieces
are included: a 20-mm that yields 14x, and a 10-mm yielding 28x.