Elliptical secondary flat for Newtonians - diameter minor axis 90 mm - 97 % reflectivity
Newton primaries of ORION Optics UK belong to the best mirrors on the market. Also the secondaries play in the same quality league.Accuracy
The surface of the secondaries has a roughness of 1/12 wave RMS or better.The 97 % HILUX coating
A 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 90 mm
Elliptical secondary flat for Newtonian telescopes with 90 mm diameter minor axis and 97 % coating.