GSO ELLIPTICAL SECONDARY MIRROR 88mm Ring the small thickness of the

the small thickness of the mirror allows a much quicker cooling time compared to the standard monolithic mirrors

Dovetail width: 5” (127 mm)

Upholstered cordura bag of highest quality

Length of the M69 thread

5 through 24 inches)

GSO ELLIPTICAL SECONDARY MIRROR 88mm Ring the small thickness of theThe 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