The XL!!
This is the ultimate bahtinov focus mask for all your focusing needs - for most people this will be the last focus mask you ever need to buy! Usable for both visual and Astrophotography!
I came up with this idea and design as a response to the fact that we usually need many different sizes of focus mask for our different telescopes.
No longer!
With this mask you can place it on any scope that fits within the hanging pegs, it is fully adjustable and capable of fitting scopes with an outer size of up to 35cm
Clean and clear focus spikes make it easy to focus any telescope, regardless of focal ratio or focal length.
Made from high quality PETG, flexible and resilient to impact and temperature it is built to last.
Nylon pegs and screws comprise the adjustment mechanism, adjustable even with gloves on in the cold.
You can find me on YouTube under the name lukomatico!
www.youtube.com/lukomatico