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Equipment Discussions >> ATM, Optics and DIY Forum

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danjones
super member


Reged: 09/26/12

home built spherometer new
      #5607600 - 01/06/13 12:11 AM Attachment (57 downloads)

this is my home built spherometer. thanks youtube uploaders; to 'carluchoparis' for the construction, and gordon waite for the mathmatics. building was a snap. calibrating and getting the math done...took careful time to ensure it was right, but done. so far, it seems to work great. i can use gordon's formula after grinds to calculate the fl and roc. i was surprised at how much 0.001 of an inch could change the roc. in the pic, it's up on some items. at this point, i just glued on the ball feet and needed it elevated so that the gauge pin didnt bottom out, to be safe.

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StarDusty
sage


Reged: 10/02/07

Loc: Parsippany, NJ
Re: home built spherometer new [Re: danjones]
      #5608534 - 01/06/13 02:33 PM

Nice...

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MKV
Carpal Tunnel
*****

Reged: 01/20/11

Re: home built spherometer new [Re: danjones]
      #5608611 - 01/06/13 03:08 PM Attachment (26 downloads)

Dan, I made mine of two 1/4 inch by 1 inch aluminum bar stock to avoid any flexure.

Mladen


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danjones
super member


Reged: 09/26/12

Re: home built spherometer [Re: MKV]
      #5616453 - 01/10/13 11:00 PM

i like mike's site of loptics.com. those are some huge mirrors. thanks for sharing.

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