PARKS  4-1/2 inch f/5 Primary Mirror Parks Optical 601-20500 Telescopes, Binoculars, Spotting Scopes, Microscopes, Riflescopes, Astronomical Accessories,Refractor,Reflector,Monoculars,Night Vision,Cassegrain,GPS,Optical Tubes,Digital Camera,Eyepiece,Filters,Barlow,Lenses,Diagonals,Prisms,Tripods,Mounts,Finder Scopes,BinoViewers,Optics,Astronomy,Astrophotography,Laser Range Finders,Rangefinders, Best Rated
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PARKS 4-1/2 INCH F/5 PRIMARY MIRROR 601-20500

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Parks Optical: PARKS  4-1/2 inch f/5 Primary Mirror Parks Optical 601-20500 Telescopes, Binoculars, Spotting Scopes, Microscopes, Riflescopes, Astronomical Accessories,Refractor,Reflector,Monoculars,Night Vision,Cassegrain,GPS,Optical Tubes,Digital Camera,Eyepiece,Filters,Barlow,Lenses,Diagonals,Prisms,Tripods,Mounts,Finder Scopes,BinoViewers,Optics,Astronomy,Astrophotography,Laser Range Finders,Rangefinders
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PARKS  4-1/2 inch f/5 Primary Mirror

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MSRP: $475.00
Sale Price: $245.95
Buy PARKS  4-1/2 inch f/5 Primary Mirror Parks Optical 601-20500 Telescopes, Binoculars, Spotting Scopes, Microscopes, Riflescopes, Astronomical Accessories,Refractor,Reflector,Monoculars,Night Vision,Cassegrain,GPS,Optical Tubes,Digital Camera,Eyepiece,Filters,Barlow,Lenses,Diagonals,Prisms,Tripods,Mounts,Finder Scopes,BinoViewers,Optics,Astronomy,Astrophotography,Laser Range Finders,Rangefinders Now!
Savings $229.05

PARKS 4-1/2" f/5 Primary Mirror 601-20500

Item No. 601-20500
Manuf. No. Parks Optical 601-20500

Eligible for Scope City Rewards at Check-out

PARKS 4-1/2" f/5 Primary Mirror, focal length 22"/570mm.

Parks Parabolic Primary Mirrors are made of premium fine annealed, low expansion Pyrex, with a full 1:6 ratio of thickness to diameter. Individually hand-figured by a skilled optician, each disk produces a good diffraction ring with no turned edges or edge zones. The optical surface exhibits straight Ronchi bands edge to edge under the sensitive double pass auto-collimation test. Aluminized and silicon monoxide over coated for long lasting performance.


PARKS OPTICAL

Certificate of Optical Quality and Authenticity

It is hereby certified that this mirror has passed a series of critical optical precision tests and carries a full lifetime warranty from PARKS OPTICAL against manufacturing and material defects. PARKS OPTICAL further guarantees that this mirror:
  • Was manufactured from fine annealed, low-expansion Pyrex glass.
  • Is guaranteed to be diffraction-limited for superb visual and photographic images.
  • Passes the sensitive, double-pass autocollimation test with a 200 Line Ronchi Grating.
  • Passes the Foucault test for paraboloidal accuracy.
  • Will meet or surpass the Rayleigh Criterion of optical precision.
  • Was individually figured, tested, and serialized by Parks Optical.


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