Product series:

Astrozap
Bahtinov focusing mask for apertures of 368mm-444mm
$ 214.00
ready for shipping in 3-5
weeks

Astrozap
Bahtinov focusing mask, 292mm-368mm
$ 191.00
ready for shipping in 3-5
weeks

Astrozap
Bahtinov focus mask for 216mm-292mm apertures
$ 146.00
ready for shipping in 3-5
weeks