Focusing Screen

by Astrozap
$24.00
Lightweight aluminum focusing screen with adjustable grommets. Sizes fit telescopes with outside diameters of:
  • 2-1/2"-5-1/2" (63mm-139mm)
  • 5-1/2"-8-1/2"(139mm-216mm)
  • 8-1/2"-11-1/2"(216mm-292mm)
  • 11-1/2"-14-1/2"(292mm-368mm)
  • 14-1/2"-17-1/2"(368mm-444mm)
Thin design allows for optimal performance.

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