RugbyRene
25-01-2021, 03:20 PM
Hi,
I'm selling a William Optics acrylic Bahtinov mask for scopes from 75mm-110mm. I used it on my Esprit 100 and it fits perfectly.
The reason I'm selling is I know have an auto-focuser.
These masks are better than the normal black plastic ones as the light transmission is higher (92%) and the diffraction spikes are bigger and much clearer allowing better focusing.
https://williamoptics.com/products/accessories/bahtinov-mask/diffraction-spikes-bahtinov-focusing-mask-for-telescopes-dew-shield-diameter-from-75mm-110mm
Sells for USD43 (approx. AUD55). I'm selling it for $30 + $5pp
Please PM if interested.
Rene
I'm selling a William Optics acrylic Bahtinov mask for scopes from 75mm-110mm. I used it on my Esprit 100 and it fits perfectly.
The reason I'm selling is I know have an auto-focuser.
These masks are better than the normal black plastic ones as the light transmission is higher (92%) and the diffraction spikes are bigger and much clearer allowing better focusing.
https://williamoptics.com/products/accessories/bahtinov-mask/diffraction-spikes-bahtinov-focusing-mask-for-telescopes-dew-shield-diameter-from-75mm-110mm
Sells for USD43 (approx. AUD55). I'm selling it for $30 + $5pp
Please PM if interested.
Rene