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Have a question? We'd love to help. Email: Call Us: (587) 336-6621 Toll Free: 1 (866) 310-8844

Orion PinPoint Telescope Focusing Mask 198-243mm (40011)

SKU 40011
Original price $71.49 - Original price $71.49
Original price
$71.49 - $71.49
Current price $71.49

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When placed over the front of a telescope, handy Orion PinPoint Telescope Focusing Masks make it easy to achieve quick and precise focusing without guesswork. Also known as Bahtinov masks, these focus aids feature a laser-cut slot pattern that produces a distinct, intersecting 3-line pattern once accurate focus is achieved in any type of telescope.


Orion PinPoint Focusing Masks will help astrophotographers save time and avoid frustrating, fuzzy results caused by slightly defocused exposures. With a PinPoint Mask installed on an imaging telescope, just focus on any bright star within or near the celestial object you want to photograph and adjust focus until the intersecting 3-line pattern is displayed indicating precise focus has been achieved. Wow, that was fast! Besides astrophotographic applications, PinPoint Focusing Masks are also useful for visual observations when fast, tack-sharp focusing is desired.

As focus is adjusted, the middle diffraction spike moves left and right of center of the "X" formed by the other two diffraction spikes.
Precise focus is achieved when the middle spike is exactly centered in the "X" pattern.
Image above displays diffraction pattern as seen on digital camera LCD or computer screen.

Three Orion-exclusive adjustable rubber-sleeved pegs equipped with thumbscrews clamp onto the outside of your telescope tube or dew shield to hold the PinPoint Mask firmly in place. Orion PinPoint Focusing Masks are easy to install and remove so you can achieve precise focus and quickly start capturing astrophoto exposures.

Each Orion PinPoint Focusing Mask can fit a range of telescope tube diameters. For example, this 198-243mm ID Orion PinPoint Focusing Mask will fit telescope tubes with an outer diameter ranging from 198 to 243mm (7.79" to 9.57").

Made of laser-cut black plastic. Flat for easy storage and transport.

Quick Overview

  • Also known as Bahtinov masks, Orion PinPoint Focusing Masks will help you achieve precise focus in seconds
  • This PinPoint Mask fits telescope tubes with an outer diameter of 198-243mm (7.79" to 9.57")
  • Orion PinPoint Focusing Masks produce a distinct, intersecting 3-line pattern once accurate focus is achieved
  • Three Orion-exclusive adjustable padded pegs provide a secure grip once installed on a telescope
  • Compatible with any type of telescope, and especially useful for astrophotography setups

What's In the Box

  • PinPoint Focusing Mask
  • Three rubber-sleeved pegs and thumbscrews

Fitment Guide

Focusing Mask Diameter Range Fits:
40004 58-83mm StarBlast 62mm Compact Travel Refractor
40005 78-103mm ED80T CF Triplet Apochromatic Refractor
40006 98-123mm ED80 80mm f/7.5 Apochromatic Refractor, EON 85mm ED-X2 f/6.6 Triplet Apo Refractor, Orion 102mm Maksutov-Cassegrain Telescopes
40007 118-153mm StarSeeker IV 114mm GoTo Reflector, AstroView 120ST Equatorial Refractor, Orion 127mm Maksutov-Cassegrain Telescopes
40008 138-173mm EON 115mm ED Triplet Apochromatic Refractor, StarSeeker IV 130mm GoTo Reflector
40009 158-193mm EON 130mm ED Triplet Apochromatic Refractor, 6" f/4 Newtonian Astrograph Reflector
40010 178-213 mm Orion 150mm Maksutov-Cassegrain Telescopes
40011 198-243mm Orion 180mm Maksutov-Cassegrain Telescopes
40012 228-273mm 8" f/8 Ritchey-Chrétien Astrograph, Premium 190mm f/5.3 Mak-Newt Astrograph, 203mm f/4.9 Reflector Telescope Optical Tube Assembly, Atlas 8 EQ-G GoTo Reflector, 8" f/3.9 Newtonian Astrograph Reflector
40013 268-313mm 10" f/8 Ritchey-Chrétien Astrograph, 10" f/3.9 Newtonian Astrograph Reflector

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