years ago Dr. Dan Fabricant of the Harvard-Smithsonian
Center for Astophyics donated some Zerodur slugs to
Stellafane. The slugs were scrap left over from coreing
out material for use in Masers (club member Dave Proten
faciliated this donation). The donor asked that if we
made mirror balnks out of the material, he would
appreciate having one of them.
Club member Dave Kelly took on the job of slicing the
slugs and grinding thier two surfaces parallel. For the
blank he planned to return to Dr. Fabricant, he took the
further step of polishing all surfaces, including the
edges, to a fine polish. On Friday, February 6, Dave,
Deb Clogston and Paul Valleli visited CfA to present the
mirror blank to Dr. Fabricant (see photo).
The Springfield Telescope Makers appreciate this
donation, and look forward to using these fine Zerodur
balnks in future projects.
and son Alan & Aaron Sliski, Ken Launie, and John
Briggs, all veterans of the annual Stellafane
Convention, teamed to disassemble a 37¼-inch
clear-aperture Boller & Chivens reflector built in 1965
for Princeton University. The effort will facilitate a
new life of education and research for the telescope,
now in the stewardship of the Michele and
David Mittelman Family Foundation. Disassembly began
immediately after the 2013 Convention, when the optics,
mirror cells, a spare primary mirror, and lighter parts
were removed by Briggs and Launie with the help of
Princeton staff and a rental truck. The process
continued in late September, when Briggs and the Sliskis
returned to prepare the instrument for heavy disassembly
by riggers. The excellent telescope, built by the famed
Boller & Chivens firm and second-to-none in quality,
will allow expanded activities similar to those already
underway at HUT Observatory in Colorado, operated by the
Michele and David Mittelman Family Foundation.
Many more details and photos of this effort are reported
John Dobson, 1915-2014
All of us at Stellafane are saddened to learn of John Dobson's passing on Janaury 15. John was an honary member of the
Springfield Telescope Makers and attended many
conventions in past.