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Zambuto Optical is a full service custom Newtonian telescope mirror maker. Every mirror is made to order. We control the entire process from casting the raw blank to the finished coating. Your mirror is 100% made and handled in-house. We can make any diameter, thickness, and focal ratio down to F/4 in our size range from 7” through 22” diameter. We can also consider special sizes or focal ratios in certain cases.

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.

8" F/4.5 and longer. . . . . . . . . . . . . . . . $1,100.00

10" F/4.5 and longer. . . . . . . . . . . . . . . $1,600.00

11" F/4.5 and longer . . . . . . . . . . . . . . .$1,750.00

12.5" F/4.5 and longer . . . . . . . . . . . . . $2,200.00

14.5" F/4.5 and longer. . . . . . . . . . . . . .$2,850.00

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

16" F/4.5 and longer . . . . . . . . . . . . . . $3,475.00

18" F/4.5 and longer. . . . . . . . . . . . . . . $4,400.00

20" F/4.5 and longer. . . . . . . . . . . . . . . $5,500.00

22" F/4.5 and longer. . . . . . . . . . . . . . . $7,825.00

F/4 mirrors add 20% to prices listed above

20 mm thick fused silica (quartz) is available in 8" through 11" diameters. F/5 and longer is same price as above. Pricing for focal ratios faster than F/5 is also available, please contact us.

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

22". . . . . . . . . 44 to 46 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.

New semiconductor-grade quartz pricing now available in all sizes from 12.5" to 24". Mirror blank thickness and pricing by size is below. Thicknesses are approximate. Add amount listed below to Supremax mirror pricing for a quartz Zambuto mirror.

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

22" at 38mm edge thickness add $1,940.00

24" at 40mm edge thickness total mirror price $11,995.00 for F/4.5 and

longer. $13,875.00 total price for F/4 (24" no longer available in Supremax)

 

Update: December 15, 2015 our lead time is now down to approximately eight months, with the range depending on size, glass availability, and our schedule of same-size mirrors.

A 50% deposit places an order and begins the lead time. When the mirror is completed and goes out 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.

A note on our F/4 pricing-

Over the last several years as we opened our market to F/4 focal ratio we found our labor to meet our entire suite of standards and tolerances to be very high. We refuse to compromise our standards, and so we found the amount of time we have been spending on these mirrors is not equal to the small additional cost we were charging, which was typically 10%. Based on our experience to date, we believe that a 20% additional charge over our F/4.5 price will be more appropriate for what we put into each mirror at F/4.

"Carl, I've owned and used one of your magical creations for about 10 years, now. I am a true believer in buying reputation, and your reputation is very well deserved. The contrast produced by this mirror is just insane. After 10 years, it still feels like the first time, every time I use it."

Sebastian Carubia, Toronto Ontario, 18" Zambuto mirror

(February, 2011)

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