Adjustible Bahtinov Focus Masks

22 products

    Adjustible Bahtinov Masks have grommets and pegs that adjust to fit on the end of your dew shield or OTA. To fit on your OTA (without a dew shield) there must be nothing (like a SCT secondary holder) projecting out from the end of your OTA. But distance from the optical train is not a critical factor in Bahtinov Mask performance, so you will never have any issues with putting an adjustible mask on the end of your dew shield. It is often more convienient to use on the end of your dew shield, especially if you are have to manage camera cords, etc. in astrophotography.

    Measure the diameter of the outside of your dew shield (or OTA) and select your Adjustible Bahtinov Mask size accordingly. For more information: https://youtu.be/65TLAzl75lw
    22 products
    Sale
    Bahtinov Mask - 10.5''  Telescopes (6795775344793)
    Grommet-Screw.jpg (6795775344793)
    Farpoint Bahtinov Mask - 3.5 Inch to 6.5 Inch OTAs
    Sale price $14.30 Regular price $20.00 Save $5.70
    Sale
    FP404 Square (6795775541401)
    Bahtinov Mask - 7.5 Inch to 10.5 Inch OTAs
    Sale price $19.30 Regular price $27.00 Save $7.70
    Sale
    FP404 Square (6862482112665)
    Bahtinov Mask - 9.5 Inch to 12.5 Inch OTAs
    Sale price $22.88 Regular price $32.00 Save $9.12
    Sale
    FP404 Square (6860739412121)
    Bahtinov Mask - 12 Inch to 15 Inch OTAs
    Sale price $27.17 Regular price $38.00 Save $10.83
    Sale
    FP404 Square (6862482112665)
    Bahtinov Mask - 11 Inch to 14 Inch OTAs
    Sale price $25.02 Regular price $35.00 Save $9.98
    Sale
    Bahtinov Mask - 10.5''  Telescopes (6795898978457)
    Grommet-Screw.jpg (6795898978457)
    Farpoint Bahtinov Focus Mask - Small 2.5"-4.5"
    Sale price $12.87 Regular price $18.00 Save $5.13
    Sale
    FP404 Square (6860739412121)
    Bahtinov Mask - 15 Inch to 18 Inch OTAs
    Sale price $34.32 Regular price $48.00 Save $13.68
    Sold Out
    FP404 Square (6860739412121)
    Bahtinov Mask - 14 Inch to 17 Inch OTAs
    Sale price $31.46 Regular price $44.00 Save $12.54
    Sale
    FP404 Square (6860739412121)
    Bahtinov Mask - 8.5 Inch to 11.5 Inch OTAs
    Sale price $21.45 Regular price $30.00 Save $8.55
    Sale
    FP404 Square (6860739412121)
    Bahtinov Mask - 13 Inch to 16 Inch OTAs
    Sale price $29.32 Regular price $41.00 Save $11.68