Stereo-image of Comet Ison Comet

Susanne Gebhard wrote:

Dear Brian,

I loved the picture of the comet you posted on Thursday, but because I can only free-view cross-eyed stereos, I couldn’t see it in 3D. So I copied the picture into powerpoint twice, cropped it and sw apped the two halves, figuring that this would turn the parallel into a cross-eyed version (I hope you’ll excuse me taking such liberty with your photo!). It worked and it looked absolutely amazing!

Does this make sense physics-wise, to simply swap the two halves in a stereo to go between cross-eye and parallel? I had a few goes at taking stereo photographs myself and used this technique, but while I did get a fairly decent 3D effect, I never got the whole picture into 3D focus, so I thought I’d ask if I’m maybe doing it all wrong before trying some more.

Tonight, on this 24th of November, we’re performing Mozart’s Requiem with the choir I sing in. Sadly fitting… Best wishes, Susanne

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Brian replied:

Ah yes, exactly, Susanne.

SEE BRIAN’S REPLY ON SOAPBOX

Good luck with the Requiem. Is it for comet ISON ?!

Cheers

Bri