printable 'calibration" image for checking stereoscopes?

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toomanyhandles
Posts: 16
Joined: Mon Dec 28, 2020 3:48 pm
Location: Michigan, USA

printable 'calibration" image for checking stereoscopes?

#1 Post by toomanyhandles » Tue Jan 12, 2021 1:46 pm

I am going to take a look at a few scratch-n-dent stereoscopes and I was thinking about taking some printed calibration / test page with me.
I've spent a bit of time searching but don't find anything obviously made for this freely available.

I am guessing something like a standard printer test page and a few sizes of "millimeter" scale type of images would suit the need. They wouldn't have to even be scaled properly, I expect, as long as the grid/scale markings were consistent, so distortion would leap out.

Any ideas or existing templates out there?

Brian.

MichaelG.
Posts: 2593
Joined: Mon Apr 10, 2017 8:24 am
Location: NorthWest England

Re: printable 'calibration" image for checking stereoscopes?

#2 Post by MichaelG. » Tue Jan 12, 2021 2:39 pm

See post #10 in this recent thread:
viewtopic.php?f=12&t=8900&p=92078&hilit ... ful#p92078

There was no evident interest, so I didn’t bother trying to produce anything better

MichaelG.
Too many 'projects'

dtsh
Posts: 121
Joined: Wed May 01, 2019 6:06 pm

Re: printable 'calibration" image for checking stereoscopes?

#3 Post by dtsh » Tue Jan 12, 2021 4:51 pm

I would bring along anything you're very familiar with, some newsprint if nothing else. Perhaps have some change in your pocket to help ensure the alignment is good; pick a mag, place a coin that's a little smaller than the field of view and see that it's properly centered and aligned in both eyepieces.

toomanyhandles
Posts: 16
Joined: Mon Dec 28, 2020 3:48 pm
Location: Michigan, USA

Re: printable 'calibration" image for checking stereoscopes?

#4 Post by toomanyhandles » Tue Jan 12, 2021 5:17 pm

Perfect, thank you--

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