🔍 Focus Like a Pro with Precision!
The Bahtinov Mask Focusing Mask is designed for telescopes with an outer diameter of 125mm-180mm, providing a mathematical approach to focusing. Made from durable 2mm thick laser-cut plexiglass, it is cold-resistant and features a secure three-post mounting system with non-scratching sleeves. This versatile mask is compatible with various telescope types and offers an adjustment range of 290-340mm, ensuring optimal performance for both reflectors and refractors.
R**O
It works
It is flimsy but you shouldn't be bending it. The size is what it says it is. Don't make the mistake of thinking it is for your telescopes diameter where it takes in light. Make sure you get a size a little bit bigger and smaller then your telescope
M**B
Arrived with crack near where screw attaches
I had to return the Batinof mask since it arrived cracked. After careful inspection I don't think this item would last very long. The shipping box was not damaged but the mask was cracked. Seems pretty flimsy.
M**D
Missing screws...twice.
I received my first one and the screws were missing. Got sent another one and yep, the screws were missing. Time to look elsewhere.
E**Y
Did not come with...
Did not come with mountain hardware like pictured and described in the description.
M**Y
nice
well made mask
H**A
Missing parts
No screws!!!!
D**G
Sturdy, well constructed, good price, small weakness
The mask arrived today and it appeared to be sturdy and well constructed. The edges were sharp, which provides good contrast for a sharp focus. The holding bolts were brass with a plastic coating to protect the telescope finish. The only problem I had was that one of the bolts was stripped and did not hold securely to the telescope. The bolt is inexpensive and fairly easily replaced, but I will have to do that. With that minor correction I would easily rate this as five stars.Update: ALL of the holding bolts were defective. They were not stripped, they were the wrong size for their nuts, and I've had to replace all of them. Other than that, it has been an indispensable aid for getting a precise focus for astrophotography.
