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Canada's top-tier Telescopes & Accessories

Focusing & Bahtinov Masks

5 products

  1. $40.78 USD
    4 in stock
    Back Order / Waiting List

    Astrozap: Lightweight full aperture aluminum focusing mask with adjustable grommets for telescopes that have an outside diameters of between 2.5" and 5.5" (63 mm to 139 mm). Thin construction enables ideal performance.

    Imagers as well as observers know that to make the most of their valuable telescope time, sharp focus is crucial. In terms of popularity, the Bahtinov-style mask has recently surpassed the Hartmann mask because of its novel diffraction pattern display which enables higher accuracy in determining the optimal focus point. For dark side imagers, where achieving the finest images is reliant upon camera focusing, the Bahtinov mask simplifies the process of finding the ideal focus point so you don't have to estimate anymore. Additionally, quick adjustments can be made when exchanging filters or fixing focus as your imaging session progresses through the night. For light side observers, the Bahtinov mask provides quicker, higher precision focusing, even when switching eyepieces.

    Proudly manufactured in the USA, Astrozap Bahtinov Focusing Masks consist of solid sheet aluminum, making them a great deal more durable than their plastic counterparts available elsewhere. They are powder coated for corrosion resistance and to keep their attractive look. Astrozap has focusing screens that fit telescopes in all the most common sizes with adjustable plastic screws mounted in rubber grommets that help fit it in place without scratching or causing damage to the outside of the optical tube. Ideal focus is achieved time after time with the Bahtinov Focusing Mask's unique diffraction pattern.

  2. $44.90 USD
    10 in stock
    Back Order / Waiting List

    Astrozap: This Astrozap Focusing Screen is a lightweight aluminum focusing screen with adjustable grommets.

    Fits telescopes with outside diameters of 5-1/2''-8-1/2'' (139mm-216mm). The thin design allows for optimal performance. Precision grid pattern allows for perfect focus every time. Quick and easy to attach to your telescope.

  3. $63.93 USD
    Back Order / Waiting List

    Astrozap: This Astrozap Bahtinov Focus Mask fits telescopes with a 8.5" to 11.5" (216 mm - 292 mm) outside diameter range. Thinly designed for consistently superior performance, this full aperture aluminum Focusing Screen is lightweight and features modifiable plastic screws for fixing to the outside of an optical tube.

    In order to take advantage of your valuable telescope time, every observer (light side) and imager (dark side) knows that sharp focus is of utmost importance. The Bahtinov Focus Mask's unique diffraction pattern display provides higher precision in determining the best focus point, leading the Bahtinov to recently eclipse the Hartmann mask in popularity. When swapping eyepieces while observing, the Bahtinov mask offers faster, more accurate focusing. For those interested in imaging, where obtaining the best images depends on camera focusing, the Bahtinov mask eliminates the need to guess the best focus point location and allows quick modifications when changing filters or adjusting focus, enabling a smooth imaging session through the night.

    Proudly manufactured in the USA, Astrozap Bahtinov Focusing Masks consist of solid sheet aluminum, making them a great deal more durable than their plastic counterparts available elsewhere. They are powder coated for corrosion resistance and to keep their attractive look. Astrozap has focusing screens that fit telescopes in all the most common sizes with adjustable plastic screws mounted in rubber grommets that help fit it in place without scratching or causing damage to the outside of the optical tube. Ideal focus is achieved time after time with the Bahtinov Focusing Mask's unique diffraction pattern.

  4. $88.90 USD
    Back Order / Waiting List

    Astrozap: Thinly designed lightweight full aperture aluminum focusing mask with modifiable grommets that offers consistently optimal performance. Fits optical tubes with an outside diameter range of between 11.5" and 14.5" (292 mm - 368 mm).

    In order to take advantage of your valuable telescope time, every observer (light side) and imager (dark side) knows that sharp focus is of utmost importance. The Bahtinov Focus Mask's unique diffraction pattern display provides higher precision in determining the best focus point, leading the Bahtinov to recently eclipse the Hartmann mask in popularity. When swapping eyepieces while observing, the Bahtinov mask offers faster, more accurate focusing. For those interested in imaging, where obtaining the best images depends on camera focusing, the Bahtinov mask eliminates the need to guess the best focus point location and allows quick modifications when changing filters or adjusting focus, enabling a smooth imaging session through the night.

    The Astrozap Focusing Mask is proudly made in the United States from solid sheet aluminum, contrary to plastic focusing masks available from other manufacturers that are not anywhere near as durable. Powder coating helps maintain its appealing looks by preventing corrosion. AstroZap carries several sizes of focusing masks to fit telescopes with the most common outside diameters. Plastic screws mounted in rubber grommets are adjustable in order to conform to the exterior of the optical tube, keeping the screen in place while avoiding scratching or otherwise causing harm to the telescope's finish. The unique Bahtinov diffraction pattern utilized by this AstroZap Focusing Mask enables consistently optimal focus.

  5. $103.42 USD
    Back Order / Waiting List

    Astrozap: Thinly designed lightweight full aperture aluminum focusing mask with modifiable grommets that offers consistently optimal performance. Fits optical tubes with an outside diameter range of between 14.5" and 17.5" (368 mm - 444 mm). 

    Imagers as well as observers know that to make the most of their valuable telescope time, sharp focus is crucial. In terms of popularity, the Bahtinov-style mask has recently surpassed the Hartmann mask because of its novel diffraction pattern display which enables higher accuracy in determining the optimal focus point. For dark side imagers, where achieving the finest images is reliant upon camera focusing, the Bahtinov mask simplifies the process of finding the ideal focus point so you don't have to estimate anymore. Additionally, quick adjustments can be made when exchanging filters or fixing focus as your imaging session progresses through the night. For light side observers, the Bahtinov mask provides quicker, higher precision focusing, even when switching eyepieces.

    AstroZap's Bahtinov Focusing Mask is proudly made in the United States from solid sheet aluminum, unlike the plastic focusing masks offered by competiting manufacturers that don't come close to matching the durability of the former. Powder coating helps protect against corrosion while maintaining its pleasant appearance. AstroZap carries many different focusing mask sizes to fit many of the most popular telescope sizes. Modifiable plastic screws attached to rubber grommets for fixing to the optical tube exterior and keeping it in place to prevent scratching and other damaging to the telescope's finish. Optimal focus is consistently realized with the Bahtinov Focusing Mask's original diffraction pattern display.

     

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