Elliptical secondary flat for Newtonians - diameter minor axis 170 mm - 97 % reflectivityNewton primaries of ORION Optics UK belong to the best mirrors on the market. Also the secondaries play in the same quality league.
AccuracyThe surface of the secondaries has a roughness of 1/12 wave RMS or better.
The 97 % HILUX coatingA true highlight - you gain substantially more light at the same aperture. Normal mirrors have reflectivities of about 90 %. 10% of the light is lost, while at the Orion mirrors only 3 % are not reflected. The object appears significantly brighter and the exposure times for photography are reduced.
Delivery contains:- Elliptical Secondary Flat 170 mm
Products specifications
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Thickness
|
20 mm |
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Coating
|
HILUX 97 % Coating |
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Glastype mirror
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PYREX from Corning |
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Diameter
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170 mm minor Axis |
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Weight
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ca. 5.3 lb |
