Farpoint FP401 Bahtinov Focus Mask for Telescopes with Dew Shield or Front End Diameter from 3.5" to 6.5"
We don't know when or if this item will be back in stock.
- Enter your model number to make sure this fits.
- Designed for telescopes with a 3.5" to 6.5" diameter dew shield
- Bahtinov Focus Masks make focusing for astrophotography easy
- Works with all DSLR cameras or CCD imagers
- Simply place the Bahtinov Focus Mask over the end of your telescope
- Made with light weight, thick, yet resilient plastic
Customers Who Bought This Item Also Bought
Top Customer Reviews
But I've begun doing astrophotography and even when using 10x zoom on my DSLR's LCD getting a really sharp focus is a challenge.
I looked at creating my own mask (there is a weblink that generates the proper mask), but after trying to cut one myself it's clear that paying someone for a pre-made mask is vastly preferable.
I picked the cheapest solution I could find - the Bahtinov mask by Farpoint Astro via Amazon. The same masks are sold elsewhere for more.
While the mask is a bit oversized for my Canon 70-200mm lens... it does work over the lens hood and it also fits over the dew shield on my 80mm refractor.
Any bright point of light will do. Shoot... zoom in, check the spikes, make a minor focus adjustment and repeat until everything lines up. The result is pretty dead on. And you don't really need to use it only with astrophotography. It will work well with any moderately bright light source.
Mechanically I'd have preferred that the nylon screws had some sort of rubber/grippy plastic to cling better to the dew shield or lens hood, but I found that it works quite well on the lens hood if the knob side of the nylon bolts are placed over the lens hood. If you get one, you'll understand what I mean).
Of course it's one more thing to carry around, but it must might save the day, I mean NIGHT to get that otherwise elusive sharp focus.
I see competitive products that are much more expensive. Somehow I doubt that they are going to perform better.
I recommend this mask. Thank you Pavel Bahtinov for inventing it!Read more ›
Most Recent Customer Reviews
Flimsy ABS plastic, manufactured using a laser cutter...Design originated from Russia, at best this is a knock off... Read morePublished 6 months ago by norcaltakguy
This is an excellent mask for obtaining precise focus when doing astrophotography.Published 18 months ago by Richard L. Coggins