The structure function was significantly improved. During this period, SOML worked the entire surface of the mirror, tilting the LOG's spindle as required. SOML plans to remove the skirt to try to better understand the observed the residual astigmatism. The numerical history of the primary polishing, including, for the first time, the structure function information, is included at the end of this document. The measurements reported above were made with the IR interferometer.
Testing continues with the visual interferometer and illumination has been significantly improved.
SOML believes that the visual interferometer is now ready for routine use. This is considered sufficient documentation of these forces. When polishing is complete, the mirror will be left in the polishing cell while the LOG is converted to a generator. The first Magellan blank will be moved to the generator approximately 2 weeks after MMT polishing is completed. After Magellan is on the generator, the MMT primary will be moved to the telescope cell and testing of the primary in the telescope cell will start.