Jacob with Lurie-Houghton Telescope Lens Blanks

PHOTO: Jacob with Lens Blanks
Here's my son Jacob with the two lens blanks that will be ground and polished into the positive and negative lenses that make up the corrector lens. The corrector is used to eliminate the spherical and coma aberrations from the spherical primary mirror used in the Lurie-Houghton design. The lenses and primary mirror will be ground and polished by the well known Arizona telescope maker Mike Spooner. Mounted through the center hole of the left lens blank is the sleeve that will hold the secondary mirror assembly that my friend Cullen Bennett machined for me in his home based machine shop. This photo was taken 9 December 1999 with an Olympus D-600L digital camera.

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Updated: 9 October 2000