Light direction and ranging accuracy

thane said:

Is it this one?
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Great for detecting breezes too.

Only problem is that if it fits too tightly you end up in the next county if you catch a gust.

SacramentoSam said:

The Bisley eyecups can be hard to find but work well with glasses, even with my oversized shop teacher safety glasses. Takes some work to get the angle and eye relief adjusted but helps me block the sun without the hat causing me to sweat. As a bonus, your eye is always in the same spot and eliminates parallax errors the Bisl

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SacramentoSam said:

The Bisley eyecups can be hard to find but work well with glasses, even with my oversized shop teacher safety glasses. Takes some work to get the angle and eye relief adjusted but helps me block the sun without the hat causing me to sweat. As a bonus, your eye is always in the same spot and eliminates parallax errors

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the Bisley eye cups can be obtained from DAVID SLADE/AIRGUNWERKS, in Tennessee......

I know you’ve decided on a hat @cavedweller, I can see why- it seems like the eyecups have a tenancy of going out of adjustment getting cockeyed in the case, having the RTV that you glued it on with come loose during a match. In my case, sitting position and off hand position need the cup to be twisted a bit… but if I do that it moves the ocular focus.
been thinking about this every since you posted and last night, I think I came up with a solution. Many of us have 3D printers or access to a friend with one—- I printed a tube that just fits over my scope and has a stop in it so it goes to the same place every time it is friction fit and can easily twist without affecting the ocular. It slips off so that it doesn’t get tweaked in my gun case. Much easier to slip the eye cup onto the tube rather than onto the scope for me. I’ll probably fancy mine up a little bit and move the DOPE sheet from the scope to the eyecup adapter.







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