Construction of a 12" f5.6 dobsonian telescope
Grinding of 13" f5.6 newtonian optics and the construction of a dobsonian telescope
Grinding of 12" f8 ritchey-chretien optics and the construction of a OTA
The vixen VC200l telescope
Errors in the tracking of the Losmandy G11 mount
Tracking of EQ6 AZ GT mount
The Orion Optics UK ODK16 telescope
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