Innovatieve Bahtinov-maskerhoes (gepatenteerd) voor WO 102 & 103-serie telescopen (CPBM-102)

Swapped out my old generic mask for this one and the difference in focusing precision is immediately obvious. The cover fits snugly on my GT102 and the diffraction spikes snap into alignment with zero guesswork. Really happy with how much sharper my test shots came out.

I was worried about getting perfect focus, but this mask made it almost too easy—the diffraction spikes snapped into alignment on my first try. The build quality feels solid, and it fits my GT102 like it was made for it.

The alignment marks are incredibly sharp through my scope, and the mask snaps on and off the dew shield without any fuss. I was able to nail focus on my first exposure of M42 after struggling with the stock cap.