Telescope Secondary Mirror 1.89 inch Start Price USD 45.00 Current Price USD 45.00 Time Left - Bid Count 0 Buy It Now Price USD 49.00 Reserve Price - Start Time Monday, September 08, 2008 End Time Monday, September 15, 2008 Location Arlington, VA See more about 'Telescope Secondary Mirror 1.89 inch' Description All our secondary mirrors are made of BK7 optical glass, manufactured to an ultra accuracy to be Wave PV 1/10 lambda or better, and are coated with the 98% enhanced aluminum coating. This mirror is tracked with S/N:  S11-07-08-48-xx. Minor Axis Diameter: 1.89" Coating: The 96-98% enhanced aluminum coating Wavefront PV: 1/10 Lambda or better  Place a Bid!