to the Observatory
The drive system upgrade project as described here has been discontinued. This decision was made because of ongoing problems with interface between the strain wave reduction gears and the telescope's equatorial mount and optical tube assembly.
The original dual chain drive designed by George Carroll has been returned to use with the addition of a modern telescope control system.
In 2005, Stony Ridge members of the Faint Object Follow Up (FOFU) project began to encounter problems that involved the tracking operation of the telescope that had operated for over 40 years without major issues. After about a year of unsuccessfully trying to determine the source of the problem and to understand a solution, SRO's chief engineer, Timothy Cann, suggested that it was time for a major drive system upgrade to the telescope.
can see and hear Tim describe the process in these 4 video clips,
produced by SRO member Kay Meyer and listed below:
While the new drive system was being built in Tim
Cann's machine shop in Temecula, CA, other SRO members prepared
the telescope by removing the old drive system, the balance arms,
all the old electronics, essentially everything that was no longer
needed when the new harmonic drive was in service. In the image
below, Dave Hadlen and James Hoff prepare the telescope tube structure
for a fresh paint job.