|
WO Focus diffraction mask
William Optics laser etched diffraction mask. Cost $70 sell for $45
This one allows for max light especially on dimmer stars and produces really sharp defined patterns
the maximum diameter is 160mm
the smaller is down to100mm although you could reduce this further using pads.
Last edited by elken2004; 31-10-2019 at 04:30 PM.
|