Focusing Masks

Showing 1 to 20 of 60 total
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  1. Farpoint - Carey Focus Mask - Meade SN-10 Schmidt-Newtonian Telescope

    $22.25
    SKU: FAR-FP437

    Ships in 3-5 Days

    Carey Focus Mask for Meade SN-10. Ten Inch Schmidt Newtonian Telescope.

  2. Farpoint - Focus Mask, For ASA 10" Telescope

    $22.80
    SKU: FAR-FP397

    Ships in 3-5 Days

    Bahtinov focus mask for ASA 10" telescope.

  3. Kendrick - Kwik Focus fits tube ODs 289mm to 299mm

    $99.95
    SKU: KEN-2052

    In stock

    Kendrick manufactures two different types of Kwik Focus Mask. The rigid masks will not bend whereas the plastic film masks are rollable and extremely lightweight.

  4. Farpoint - Bahtinow Focus Mask for Meade 12" Schmidt-Cassegrain telescope

    $26.70
    SKU: FAR-FP414

    In stock

    Farpoint Bahtinov focusing masks have precision cut edges for easy focus adjustment. This mask was designed to fit the Meade 12" SC Telescopes.
  5. Farpoint - Bahtinov Focus Mask for Telescopes with Dew Shield or Front End Diameter 8.5" to 10.5"

    $20.45
    SKU: FAR-FP404

    Ships in 3-5 Days

    Due to the precision edges and easy to read platform, the Farpoint Bahtinov masks are highly superior.

  6. Farpoint - Bahtinov Focus Mask for Celestron 9.25" SCT

    $18.65
    SKU: FAR-FP415

    In stock

    This Bahtinov focusing mask by Farpoint was designed to fit the Celestron 9.25" SC telescopes. With precision cut edges and a durable frame, Farpoint focus masks provide excellent performance.
  7. Farpoint - Bahtinov Focus Mask for Telescopes with Dew Shield or Front End Diameter from 3.5" to 6.5"

    $15.10
    SKU: FAR-FP401

    Ships in 3-5 Days

    Due to the precision edges and easy to read platform, the Farpoint Bahtinov masks are highly superior.

  8. Farpoint - Bahtinov Focus Mask for Telescopes with Dew Shield O.D. from 5.5" to 8.5" Diameter

    $16.90
    SKU: FAR-FP402

    Ships in 3-5 Days

    Due to the precision edges and easy to read platform, the Farpoint Bahtinov masks are highly superior.

  9. Farpoint - Bahtinov Focus Mask for Telescopes with Dew Shield or Front End Diameter 6.5" to 9.5"

    $17.80
    SKU: FAR-FP403

    Ships in 3-5 Days

    Due to the precision edges and easy to read platform, the Farpoint Bahtinov masks are highly superior.

  10. Farpoint - Bahtinow Focus Mask for Meade 10" SC Telescope

    $22.25
    SKU: FAR-FP413

    In stock

    Farpoint Bahtinov Focus Mask for Meade 10" SCT." Schmidt-Cassegrain telescope.

  11. Farpoint - Bahtinov Focus Mask for Celestron 11 " SCT

    $22.25
    SKU: FAR-FP412

    In stock

    Due to the precision edges and easy to read platform, the Farpoint Bahtinov masks are highly superior.

  12. Farpoint - Bahtinov Focus Mask for Meade 8" Schmidt-Cassegrain telescope

    $17.80
    SKU: FAR-FP411

    In stock

    Due to the precision edges and easy to read platform, the Farpoint Bahtinov masks are highly superior.

  13. Farpoint - Bahtinov Focus Mask for Celestron 8 " SCT

    $17.80
    SKU: FAR-FP410

    In stock

    Due to the precision edges and easy to read platform, the Farpoint Bahtinov masks are highly superior.

  14. Farpoint - Bahtinov Focus Mask Fits 2.5" to 4.5" Diameter Telescopes

    $13.30
    SKU: FAR-FP400

    Ships in 3-5 Days

  15. Farpoint - Bahtinov Focus Mask for Celestron 11 " SCT with Hyperstar

    $22.25
    SKU: FAR-FP412H

    Ships in 3-5 Days

    Farpoint Bahtinov focus mask for Celestron C11 Schmidt-Cassegrain telescope, with HyperStar.

  16. Farpoint - Bahtinov Focus Mask Meade 12" SCT LX850

    $26.70
    SKU: FAR-FP417

    Ships in 3-5 Days

    Farpoint Bahtinov Focus Mask for Meade 12" SCT LX850

  17. Farpoint - Carey Focus Mask - Meade 12" Schmidt-Cassegrain Telescope

    $26.70
    SKU: FAR-FP435

    Ships in 3-5 Days

    Carey focus mask for Meade 12" Schmidt-Cassegrain telescope.

  18. Farpoint - Carey Focus Mask - Meade 10" Schmidt-Cassegrain Telescope

    $24.95
    SKU: FAR-FP434

    Ships in 3-5 Days

    Farpoint Carey focus mask for Meade 10" Schmidt-Cassegrain telescope.

  19. Farpoint - Carey Focus Mask - Meade 8" Schmidt-Cassegrain Telescope

    $17.80
    SKU: FAR-FP432

    In stock

    Farpoint Carey focus mask for Meade 8" Schmidt-Cassegrain telescope. Carey masks provide high precision focusing with a distinct X pattern.

  20. Farpoint - Carey Focus Mask - Celestron C11 Schmidt-Cassegrain Telescope with Hyperstar

    $22.25
    SKU: FAR-FP433H

    Ships in 3-5 Days

    Farpoint Carey Focus masks offer a high precision focusing mask with a distinct X pattern. This Carey focus masks was designed to fit the Celestron 11" SCT with Hyperstar.
Showing 1 to 20 of 60 total
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Focusing masks are an inexpensive and easy to way to achieve perfect focus and are a must have accessory for astrophotographers. These simple yet effective masks attach to the primary end of your telescope and, with a specially designed grid, create a patternthat will help you adjust your focus. There are four types of focus mask patterns available on the market. Bahtinov masks are the most commonly found and widely used masks. The

Bahtinov masks are the most commonly found and widely used masks. With slits pointing in three different directions, the resulting crown pattern (three small dashes above and below the focus star) can tell you how much your focus is off and by what direction. 

Hartmann masks are cut either with circular or triangular holes.  This focus mask type is the only one that does not use diffraction and are best suited for gross focus adjustments as smaller discrepancies can be difficult to detect.  

Carey focus masks use slits in two angles, 12 degrees on the left and 10 degrees on the right.  The resulting pattern is a distinct X type pattern with two long dashes above and below the focus star. Very small adjustments are easily made with Carey masks. 

Perpendicular masks are the least common but create a unique cross pattern, with four sets of two dashes set at equal distances around the focus star.  Adjustments by eye with a perpendicular mask can be difficult but with analytical software, additional calculation and automated adjustment can create perfect focus.