We have used several groups on consultants in designing the TSU 2m telescope. Principal consultants in early stages of the design of the mount were a group of professors and associated graduate students at the Center for Manufacturing Research at Tennessee Tech University (one of our fellow Centers of Excellence). They have expertise in machine design, vibration analysis, and servo control systems. Their primary assignments were 1) to do a dynamical analysis of the secondary-mirror support system, 2) to develop alternative proposals for the azimuth bearing, 3) to provide backup capability in finite-element analysis to that available at TSU, 4) to find machine shops to manufacture the mechanical parts of the mount, 5) to develop proposals for the drive/servo control system, 6) to develop alternative proposals for the telescope drives, and 7) possibly to prepare shop drawings for manufacture of the mount. TTU put a considerable amount of work in on tasks 1, 2, 6 and 7 above, with some help through tasks 3, 4, and 5. They investigated using hydraulic drive motors, which did not seem feasible, developed proposals for air bearings to support both the azimuth and altitude axes, and discovered a source for a different way of coupling the drive motors to the telescope. They found one capable machine shop that could have built the major parts of the telescope and found sources of actuators for the guiding head.
Other consulting has been provided by James Wert & Associates (metallurgist) who contributed a very useful analysis of the drive-surface problem, Dan Schroeder, who advided us about telescope optics in early stages of the project, and Sam Barden, who advised about fiber optics, blackening the interiors of spectrographs, and spectrograph design. Louis J. Boyd, the Dirctor of Fairborn Observatory, who maintains our automatic telescopes and has built most of them, is giving advice on making the telescope easier to maintain, is managing site development for the telescope, and is integrating it into Fairborn Observatory. Andre Hedrick and Don Epand are providing consulting on the telescope control system. Mike Williamson began working on the project as an instrumental consultant/programmer in November, 1999 and has taken over development of the basic control system. Harland Epps has designed the camera for the spectrograph for us and is assisting in its procurement.
We have also benefitted from help given us from certain NASA engineers with actual experience in designing and building telescopes and optical systems. Scott Smith, Roy Young, Ron Eng, and Tom Kester (Marshall) have been especially helpful for advice about adjusting the mirrors, and Peter Maymon (Goddard) has helped us assess the optical system of the echelle spectrograph. In addition, Smith arranged for another group at Marshall to measure the vibrational characteristics of our telescope mount to verify the FEA calculations we did.
Our goal was to manufacture the 2-m telescope as completely as possible in Tennessee, and we have succeeded in doing that. We had the most of the mount manufactured at the Oak Ridge National Laboratory Y12 plant (National Prototype Center) and had many of the smaller parts--such as covers for the mirror, mirror cell, and fork base and boxes for the electronics--made at Hamilton Machine in Nashville. Hamilton also did the heavy modifications required for integrating the telescope mechanically. We have also used Marlyn Krebs of Nashville and Mark Wells (Huntsville, Alabama) for machining parts of the mount and instruments for the telescope. Sierrita Mining and Ranching Co. of Sahuarita, Ariz., built the enclosure for the telescope and has installed it in Arizona.
The following businesses have supplied parts or services to the 2-m telescope project: in Middle Tennessee: Advanced Industrial Technologies, Allied Bearings, Besco Steel, Capitol City Bolt & Screw, The Collision Center (Goodlettesville, TN); Continental Machinery Movers, Drake Atwood Tool & Supply, Grainger, J & J Machine and Tool Industries, JDC Inc. (Mt. Juliet), Meredith Air Controls, Nashville Rubber and Gasket, Tennessee Sheet Metal, Inc., The Pless Co., Professional Anodizing (Hendersonville, Tenn.), Regan Controls, Robbins and Bohr, The Tool Crib, and Wright Industries. Outside Middle Tennessee: Aeroquip, Carr Lane, Cleveland Flame Hardening, Compumotor, Eagle Alloys (Johnson City, TN), Ealing, Eastern Air Devices, Environmentally Safe Products (New Oxford, PA), Galil Motion Control, Gurley Precision Instruments, Haydon Switch, Imagenation, Johnson Sails, Inc. (St Petersburg, Fla.), Kaydon Bearings, Lee Spring Co., Lucas Aerospace, Mi-Tech Metals (Indianapolis), McGill Manufacturing, Melles Griot, Moore Industrial Hardware, Nu-Matic Grinders, Optimized Controls, OptoSigma, Oriel Corp., Panasonic, Sealeze Corp. (Richmond, Va.), SNR (French bearing manf.), Sony Corp., Star Instruments (Flagstaff, Ariz.), THK, TrueTime, and J. W. Winco (New Berlin, Wisc.).