Questar
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Questar 45°image erecting prism for Questar 3.5" scopes only
$460.00This premium Questar 45° viewing angle image erecting diagonal fits into the back of any Questar 3.5" scope to provide upright and correctly left-to-right oriented images. -
Questar straight-through roof prism for 3.5" Questar scopes
$453.00This straight-through roof prism image erector is designed to use 1.25" Questar thread-in eyepieces on Questar 3.5" Maksutov-Cassegrain telescopes only. -
Questar swivel coupling to use image erector or Starguide with 3.5" Questars
$115.00This Questar $13071 swivel coupling is needed to use the Questar image erector or Starguide off-axis guider with 3.5" Questar scopes.