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Adjustable Style Masks
We make a series of adjustible masks in a range of sizes that allow the placement on the front of nearly any telescope from small refractors to large Newtonian telescopes.
- Twelve standard sizes offered
- Smallest size accommodated = 50mm
- Largest size accommodated = 600mm
- Custom sizes available upon request
Camera Lens Masks
Our camera lens masks are small masks designed to snap into a skylight or UV filter (inexpensive) which then thread onto your camera lens for focusing. Once focused, gently unthread the filter and take your normal exposures.
- 52mm thread
- 55mm
- 58mm
- 62mm
- 67mm
- 72mm
- 77mm
- 82mm
Masks for SCT Type Telescopes
Part of our standard line of Bahtinov masks are a series made specifically to fit certain models of Schmidt Cassegran Telescopes. These masks are a perfect match and fit your your particular telescope.
- Celestron SCT Sizes - 6", 8", 11", 14"
- Celestron RASA astrographs
- Meade SCT Sizes - 8", 10", 12", 14", 16"
- Meade LX850 scopes
- Skywatcher
- Custom masks upon request
Farpoint Bahtinov Masks are a lifesaving focus tool that makes focusing your astrophotos a snap - quick and easy to use.
Farpoint Bahtinov Masks are a lifesaving focus tool that makes focusing your astrophotos a snap - quick and easy to use.
Farpoint Bahtinov Masks Are one of the best tools for focusing your telescope available to astrophotographers. In 2005 Pavel Bahtinov, a Russian amateur telescope maker and astronomer, detailed a new way to easily focus your DSLR, CMOS or CCD camera for astrophotography. The Bahtinov mask is placed in front of the telesocpe for the duration of focusing and then removed for the main exposure. With this great tool it is possible to get perfect focus in less than 90 seconds.
How it Works
- Our masks work equally well directly on the end of your telescope scope or on the end of a dew shield.
- The mask itself does not need to be perfectly centered on the scope. Some minor decenter is ok.
- Select a bright star for focusing and gently place the Bahtinov focus mask on the front of your telescope. Gravity and the "hanger pegs" will keep the mask in place for the duration of focusing your image.
- Take a short exposure, perhaps 1-3 seconds.
- The mask will create a set of diffraction spikes protruding from the star that will intuitively allow you to focus your image. The spikes will present as an "X" with a line bisecting it.
- When in focus, the bisecting diffraction spike will be perfectly centered on the "X". When out of focus, the bisecting line will be shifted to one side or the other.
- Adjust the focus slightly and repeat the exposure. The bisecting spike will move position letting you know if you improved the focus. Repeat the process until the bisecting spike is centered in the "X".
- Remove the Bahtinov mask from your telescope, compose and frame your astrophoto and take your expoures.
Although the process sounds complex when written, it is actually very easy and very intuiative to use. You will be delighted with the results.
Tri Bahtinov Masks
We offer a newer varient of the Bahtinov Mask, known as the Tri-bahtinov Mask. The Tri-Mask offers more sensativity in focusing as well as insight into collimation of the optical system. Suitable for users who want more information than just focus.
Laser cut, durable ABS plastic
- We precision laser cut our masks with our 4 in-house laser systems.
- Our masks are made from almost indestructible ABS plastic sheet.
- ABS will not crack or break when dropped or transported in your astro tool box.
Suport Peg System
Our adjustable masks use soft rubber grommets and custom machined delrin plastic "pegs". These soft, no scratch, materials protect your instrument from damage while securely holding the mask in place for the duration of focusing.
Alan Richards
Reviewed in the United States on April 9, 2022
Not only can you achieve focus with this and I also tells you how your axis tilt is.
Patrick McGee
Reviewed in the United States on August 17, 2021
Works well for focusing with my C11, and there is a way to use it for collimating!
WeegieB
Reviewed in the United States on June 2, 2021
UsefulMy C11 was very out of columnation. I had tried davis mask, and the airy disk method. this was a big help.I do recommend you use a web cam and perhaps a mask over the TriB to only do one sector at a time.It can be confusing to do all three at one time but perhaps not confusing for you.
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