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Focus Aids

Items 1 - 25 of 79

Farpoint Astro Bahtinov Mask for Celestron 8" SCT - FP410

SKU: FAR-FP410
  • Focus Masks & Caps Known to Fit: Celestron 8" SCT
$20.00

Farpoint Astro Bahtinov Mask for Meade 12" SCT - FP414

SKU: FAR-FP414
  • Focus Masks & Caps Known to Fit: Meade 12" SCT
$30.00

Farpoint Astro Bahtinov Mask for Celestron 9.25" SCT - FP415

SKU: FAR-FP415
  • Focus Masks & Caps Known to Fit: Celestron 9.25" SCT
$21.00

William Optics Bahtinov Mask Cover for WO Z61 Telescopes - Gold - CPBM-61GD

SKU: WYO-CPBM-61-GD
  • Focus Masks & Caps Known to Fit: William Optics Z61 Telescopes
$78.00

William Optics Bahtinov Mask Cover for WO Z61 Telescopes - Red - CPBM-61RD

SKU: WYO-CPBM-61-RD
  • Focus Masks & Caps Known to Fit: William Optics Z61 Telescopes
$78.00

William Optics Bahtinov Mask Cover for WO GT71/Z73/Star71II Telescopes - Blue - CPBM-71BU

SKU: WYO-CPBM-71-BU
  • Focus Masks & Caps Known to Fit: William Optics GT71/Z73/Star71II Telescopes
$88.00

William Optics Bahtinov Mask Cover for WO GT71/Z73/Star71II Telescopes - Red - CPBM-71RD

SKU: WYO-CPBM-71-RD
  • Focus Masks & Caps Known to Fit: William Optics GT71/Z73/Star71II Telescopes
$88.00

William Optics Bahtinov Mask Cover for WO GT71/Z73/Star71II Telescopes - Gold - CPBM-71GD

SKU: WYO-CPBM-71-GD
  • Focus Masks & Caps Known to Fit: William Optics GT71/Z73/Star71II Telescopes
$88.00

William Optics Bahtinov Mask Cover for WO GT81 Telescopes - Blue - CPBM-81BU

SKU: WYO-CPBM-81-BU
  • Focus Masks & Caps Known to Fit: William Optics GT81 Telescopes
$98.00

William Optics Bahtinov Mask Cover for WO GT81 Telescopes - Red - CPBM-81RD

SKU: WYO-CPBM-81-RD
  • Focus Masks & Caps Known to Fit: William Optics GT81 Telescopes
$98.00

William Optics Bahtinov Mask Cover for WO GT81 Telescopes - Gold - CPBM-81GD

SKU: WYO-CPBM-81-GD
  • Focus Masks & Caps Known to Fit: William Optics GT81 Telescopes
$98.00

William Optics Bahtinov Mask Cover for WO 102 & 103 Series Telescopes - Blue - CPBM-102BU

SKU: WYO-CPBM-102-BU
  • Focus Masks & Caps Known to Fit: William Optics 102 & 103 Series Telescopes
$118.00

William Optics Bahtinov Mask Cover for WO 102 & 103 Series Telescopes - Red - CPBM-102RD

SKU: WYO-CPBM-102-RD
  • Focus Masks & Caps Known to Fit: William Optics 102 & 103 Series Telescopes
$118.00

William Optics Bahtinov Mask Cover for WO 102 & 103 Series Telescopes - Gold - CPBM-102GD

SKU: WYO-CPBM-102-GD
  • Focus Masks & Caps Known to Fit: William Optics 102 & 103 Series Telescopes
$118.00

William Optics Bahtinov Mask Cover for WO FLT132 Telescopes - Blue - CPBM-132BU

SKU: WYO-CPBM-132-BU
  • Focus Masks & Caps Known to Fit: William Optics FLT132 Telescopes
$178.00

William Optics Bahtinov Mask Cover for WO FLT132 Telescopes - Red - CPBM-132RD

SKU: WYO-CPBM-132-RD
  • Focus Masks & Caps Known to Fit: William Optics FLT132 Telescopes
$178.00

William Optics Bahtinov Mask Cover for WO FLT132 Telescopes - Gold - CPBM-132GD

SKU: WYO-CPBM-132-GD
  • Focus Masks & Caps Known to Fit: William Optics FLT132 Telescopes
$178.00
Starlight Instruments Curved Base with Leveling Screws for 2" Feather Touch Focuser
$125.00
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$449.95

Farpoint Astro Bahtinov Focus Mask for Meade 8" SCT - FP411

SKU: FAR-FP411
  • Focus Masks & Caps Known to Fit: Meade 8" SCT
$20.00
$225.00
Starlight Instruments 2" Focuser Adapter for Celestron 11" and 14" SCT
$90.00
Stellarvue 3" FT Focuser to 2" Adapter

Stellarvue 2" Adapter for 3" FT Focuser for SVQ100 - DCQFT3

SKU: STV-DCQFT3
  • The Stellarvue 2" Adapter is made to work with 3” Feathertouch Focusers.

  • Adding this to the focuser allows users to use 2" accessories.

  • The included brass compression ring hold accessories firmly in place.

  • Stellarvue has designed this adapter to be black in color.
$49.00
Farpoint Bahtinov Focuse Mask for 58 mm DSLR Camera Filter Threads

Farpoint Bahtinov Focus Mask for 58 mm DSLR Camera Filter Threads - FP439

SKU: FAR-FP439
  • Focus Masks & Caps Known to Fit: DSLR Cameras w/ 58 mm Filter Threads
$13.00
Stellarvue 3" SV Focuser to 2" Adapter

Stellarvue 2" Adapter for SVQ100 with 3" SV Focuser - DCQSV3

SKU: STV-DCQSV3
  • This Stellarvue 2" Adapter threads on to 3” Stellarvue Focusers.

  • Using this allows users to start using 2" eyepieces and other accessories with 2" barrels.

  • A brass compression ring clamp holds the accessories in place.

  • Stellarvue has designed the adapter to be black in color.
$49.00

There is no question how important it is to focus your astronomy system properly. Not only will precise focusing reveal optimal views, but it will ensure the highest image quality possible. Many focusing aids are adapters to connect a focuser to your optical tube assembly. This is particularly helpful if you plan on upgrading your focuser. Focuser adapters maintain your focuser’s stability and reduce strain on your optical tube assembly.


A Bahtinov mask is a must-have for every astrophotographer. This mask attaches to the front of the scope’s objective lens to show the astronomer how to precisely focus their telescope. The Batinov mask consists of three separate grids that produce three angled diffraction spikes when the telescope is pointed at a bright star. As the focus changes, the spikes appear to move so the observer can determine they must increase or decrease focus.


Another interesting focusing tool to consider is a micron indicator kit. These kits give you a readout of your exact focus settings. This great if you’re working with CCD photography, which often requires indexing the exact focus position of your imaging system. A micron indicator kit will often connect to a computer so you can easily use the kit on your computer.

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