Prices listed are for Schott Supremax premium borosilicate glass which is cast, annealed and machined in-house. All mirrors are finished and documented by Carl Zambuto and coated and center-spotted in-house at the ZOC facility. Each mirror is custom made to order which includes custom focal lengths of any specification within range. Our focal length tolerance is +/- 1/4 inch, and can be made tighter if needed in a special situation.

As of October 6, 2018 a price increase of approx 7% has been applied. Last increase was April 2014 (4-1/2 years prior). Quartz upgrade pricing remains the same.

8" F/4.5 and longer. . . . . . . . . . . . . . . . $1,180.00

10" F/4.5 and longer. . . . . . . . . . . . . . . $1,720.00

11" F/4.5 and longer . . . . . . . . . . . . . . .$1,875.00

12.5" F/4.5 and longer . . . . . . . . . . . . . $2,350.00

14.5" F/4.5 and longer. . . . . . . . . . . . . .$3,050.00

15" F/4.5 and longer. . . . . . . . . . . . . . . $3,275.00

16" F/4.5 and longer . . . . . . . . . . . . . . $3,725.00

18" F/4.5 and longer. . . . . . . . . . . . . . . $4,700.00

20" F/4.5 and longer. . . . . . . . . . . . . . . $5,900.00

We make mirrors down to F/4 focal ratio. F/4 mirrors add 25% to prices listed above, and ratios in between F/4.5 and F/4 are prorated uniformly in price.

Please note: order cancellations are subject to a fee of 10% of the total mirror price.

Pricing in Supremax is for typical thickness ranges as follows (other thicknesses may be available in certain circumstances):

8". . . . . . . . . . 25 mm edge thickness

10". . . . . . . . . 29 mm edge thickness

11" . . . . . . . . . 30 to 31 mm edge thickness

12.5" . . . . . . . 32 through 35 mm edge thickness

14.5" . . . . . . . 35 through 38 mm edge thickness

15". . . . . . . . . 36 through 38 mm edge thickness

16". . . . . . . . . 38 mm edge thickness

18". . . . . . . . . 41 mm edge thickness

20". . . . . . . . . 43 mm edge thickness

Photo is a bench image of a 10" F/5 Zambuto mirror. Orion Nebula courtesy of Del Johnson taken with a 12.5" Zambuto mirror.

Semiconductor-grade fused quartz is available in all sizes. Mirror blank thickness and pricing by size is below. Add amount listed below to Supremax mirror pricing for a quartz Zambuto mirror. Thicker quartz is available in all sizes with prorated pricing per thickness.

8" at 20mm edge thickness add $290.00

10" at 25mm edge thickness add $390.00

11" at 25mm edge thickness add $440.00

12.5" at 25mm edge thickness add $550.00

14.5" at 27mm edge thickness add $640.00

15" at 27mm edge thickness add $695.00

16" at 29mm edge thickness add $795.00

18" at 32mm edge thickness add $945.00

20" at 35mm edge thickness add $1,325.00

Our current lead time on new orders is now down to 10 months approximate, as of 6-5-19.

A 50% deposit places an order and begins the lead time. When the mirror is completed and goes to our lab for coating, the balance is due. Contact us for more details and payment options.

Shipping costs- We ship at the lowest possible rates, at actual cost to us for both foreign and domestic shipping. We use the US Postal Service for international shipment. Mirrors are shipped using Priority Mail International, which is less than half the cost of UPS Worldship, and when the value is above $2,500.00 we use Priority Express International, still at substanstial savings. The size limit for this service depends on destination, as width and girth limits vary by country. Larger sizes are shipped Global Express Guaranteed which is still less cost than UPS. But in every case, Zambuto Optical buys the insurance for you. There are no added insurance fees to ship internationally, only the lowest possible rate to get you your mirror.