Located in Anza, California, Terry Ostahowski , has over 30 years
experience in fabrication of optics. Ostahowski Optics offers PYREX
low expansion glass in 8 inch to 24 inch sizes. All Optics are guaranteed to
be completely diffraction limited (including obstruction). The Pyrex
substrates are precision annealed and ground flat on the back. Every
primary mirror is expertly beveled and free from chips, front and
back. All primary mirror is examined with a 1000X with a
precision pinhole to ensure a surface free of revolution and
astigmatism. All mirrors are marked with the focal length and enhanced
(96%) aluminum coatings are standard. Ostahowski optics offers a 60
day money back policy on the figure and 1 year warranty on coatings. A highly accurate Perkin Elmer interferometer
is used to fabricate
optics and an interferometric analysis is supplied with each optic.
970-284-9471
Located in Buena Vista, Colorado, Galaxy Optics has a long outstanding
reputation as a first class optical company. Galaxy uses precision, annealed PYREX
low expansion glass, with certs and offers sizes 18-25. All Optics are guaranteed to
be completely diffraction limited (including obstruction) with a maximum. RMS wave
front error of .076 at 632nm over a clear aperture greater than 97%. Workmanship is
lifetime guaranteed. Galaxy also does all mirror coating in house. Galaxy also
includes a highly accurate interferometric analysis with every mirror.
719-395-8242
Pegasus Optics offers primary mirrors of exceptional quality, guaranteed
performance and lifetime warranty. John Hall, the proprietor of Pegasus, advertises optics
that focus precisely. Pegasus also supplies Objective Quality Evidence in the form of
certifications and test results. Data provided includes annealing certs, Foucault test
readings and test envelope, explanation of methods used and of data provided, and a
graphic representation of surface error, wave front error and diffraction disk radius.
Pegasus mirrors have acquired a well deserved reputation for unparalleled quality.
Delivery time is approximately 60 days from time of order. Sizes 8" to
25" in
all precision, annealed PYREX 2" glass with QSP coatings.
830-538-9499
Carl Zambuto offers primary mirrors of exceptional quality, guaranteed performance and lifetime warranty. Each optic is finished with a smooth microsurface and an excellent edge which shows a balanced diffraction ring under test. The figure accuracy is contained comfortably within the Millies-Lacroix tolerance, used with all mirrors. Optical fabrication uses the knifedge (Foucault) and Ronchi test as well as measuring figure accuracy and astigmatism. Figure smoothness, surface smoothness and edge condition are evaluated. Zambuto Optical Company guarantees that your mirror will perform beyond 50x per inch of aperture with no visible breakdown in the in-focus image when all related factors are in order. Zambuto optics have acquired a well deserved reputation for unparalleled quality. Delivery time is approximately 4-6 months from time of order. Sizes 10" to 20" in precision, annealed PYREX.
360-446-0734