GSO ELLIPTICAL SECONDARY MIRROR 88mm Ring The SkyWatcher 6" Dobsonian is

The SkyWatcher 6" Dobsonian is a Newtonian reflector telescope with an f/8 focal ratio

The large full well depth of 97ke- is three times as much as the ASI174MM

It can be installed on: ASI120MM

Dovetail width: 5” (127 mm)

Here’s some examples

GSO ELLIPTICAL SECONDARY MIRROR 88mm Ring The SkyWatcher 6" Dobsonian isThe GSO 88mm elliptical secondary mirror is ideal for amateur telescope makers and is perfectly suited to the Geoptik Nadirus 16" Dobsonian. GSO secondary mirrors are offered in sizes from 62. 5 88mm to suit a variety of primary mirrors. Well known for their excellent quality, GSO mirrors are some of the best available in their price range. The secondary mirror does not come with a holder, but can be glued in place. The mirrors are made from BK 7