Saint Petersburg Astronomy Club - Mirror Lab


Science Center of Pinellas
7701 22nd Ave N
Saint Petersburg, FL 33710

We're available from 12 Noon to 4PM each Saturday

Our Founder

Paul McNabb founded the mirror lab in 1997 in order to create the best amateur telecopes possible. Inch for inch our mirrors surpass store bought or commercial grade scopes.

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  • Ralph Craig - Lab Instructor
  • Allen Maroney - Lab Instructor
  • Ron Jones - The Figurer
  • Mike Davis - Casts Mirrors
  • Dimitri - Support


  • James Lerch - Robo Foucault
  • Matt Terry
  • Charlie Mullen
  • Bruce Kazcmarik
  • Keevy McAlavy

In Memorium

  • Irv Nadelhaft
  • Lenny Remetta

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Where the 19th Century Art of Mirror Making Meets the 21st Century

The Saint Petersburg Mirror Lab is a small band of dedicated mirror grinders and telescope makers living in the Tampa Bay area of Florida. We offer a mirror making class for interested persons. We strive to create the best mirrors our home brew technology can muster. This includes robotic foucault testing and laser interferometry.

  Nicholas and Donna with their finished mirror
Nicholas and Donna with their finished 8 inch better than 1/4 wave mirror. This mirror has a
beautiful polish and edge. Thanks for the Mirror Lab buttons Nicholas!

  Steve Fredlunds wood strip tube
Left: Steve, Irv and Ralph check out the 10 inch mirror cell for Steves wood strip tube. Right:
Paul cuts the focuser hole on the tube.

  Paul's 16 inch mirror being polished
Paul's 16 inch mirror during the Huckleberry Finn polishing phase.

  Donna and Nicholas start polishing their 8 inch mirror
Donna and Nicholas prepare to pour their pitch lap (left) and begin polishing their 8 inch mirror

  Pedro and Giovanni finish their 10" mirror
Pedro and Giovanni with their finished f4.5 1/5th wave 10" mirror.

  Carlos Paris visitor from Ft. Myers
Carlos Paris was a visitor from the Ft. Myers area and needed help with his 6" mirror. He has
been working alone on it using an impessive home-made Foucault tester and a couple of good books.
Now he was ready to start figuring it. He finished it at the lab better than 1/9th wave during
his first visit (also 6/2).

  Steve Fredlund
Steve Fredlund started his mirror at the lab and finished it better than 1/7th wave last Saturday

  Pedro and Giovanni
Pedro and his son, Giovanni are now on the final figuring of their 10" mirror.

  Mike Newton finishes an 8 inch mirror
Mike Newton with his finished 8 inch f/5.91 one sixth wave mirror on 12-31-2011.

  Dave Pearson and Erin finish a 6 inch mirror
Dave Pearson and his daughter, Erin, with their finished 6 inch f/4.52 sixth wave mirror on

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