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Pre-generated Mirror Blank Kits

 

The mirror blank you will receive in this kit will be ground with a Radius of Curvature (RoC) of your specification and the back will be ground flat within .002” at 220 grit.  All edges will be chamfered and shipped in a quality wood box that can be reused to send the mirror to a coater once it has been polished and figured.  When ordering this kit, be sure to specify the desired RoC between 48 inches and 196 inches.  Bear in mind that there is a surcharge of 5% for blanks with focal ratios faster than f/4.5 and 10% for ratios faster than f/3.5 (We will limit this surcharge to a total of $50 and $100 respectively).  Current lead time is approximately 3-6 weeks for Supremax-33 and 4-8 weeks for Zerodur.  We typically get the kits shipped much faster than this, but occasionally experience delays.

 

This kit includes the following:

-A full-thickness mirror blank, either Supremax-33 or Zerodur

-High-durability porcelain tiles

-Dental Stone

-Silicon Carbide abrasives (#80, #120, #220, #320, #500)

-Aluminum Oxide abrasives (15µ, 5µ)

-Cerium Oxide polish agent (average 2µ)

-Gugolz Pitch

 

Ready-to-Polish Mirror blank kits

 

Don’t deny yourself the deeply satisfying process of polishing your own mirror.  The mirror blank in this kit has been fine ground by hand to 5-7µ by an experienced professional.  Guaranteed to be free of edge defects, it is ready to take a polish. This kit is shipped in a quality wood box that can be reused to send the mirror to a coater once it has been polished and figured.  The final Radius of curvature will be within 1.5 inches of the desired length.  Bear in mind that there is a surcharge of 5% for blanks with focal ratios faster than f/4.5 and 10% for ratios faster than f/3.5 (We will limit this surcharge to a total of $50 and $100 respectively).  Current lead time is approximately 10-12 weeks for Supremax-33 and 12 weeks for Zerodur.

 

This kit includes the following:

-A fine-ground full-thickness mirror blank, either Supremax-33 or Zerodur

-The tool used to grind the mirror

-Cerium Oxide polish agent (average 2µ)

-Gugolz Pitch

 

 

Supremax-33

 

Supremax-33 is manufactured by Schott AG.  It begins its life as the precision-annealed ultra-low expansion borosilicate “Borofloat-33” (thermal expansion coefficient: 3.25 x 10-6 K-1) and is shaped into sheets during a rolling process.  This rolling procedure reduces the stresses within the material and transforms it into a material with a very low strain birefringence index called “Supremax-33”.  At this point, it is already a higher quality substrate than the more widely known Pyrex brand manufactured by Corning.  The internal stresses (strains) within any manufactured glass material are impossible to avoid, and, over time can destroy a mirror’s figure.  Our Supermax-33 blanks undergo a second annealing phase during which the majority of remaining stress is released and the final strain birefringence is guaranteed to be 6mµ or less.  This is the highest quality borosilicate mirror blank kit available anywhere in the world.

 

 

Supremax-33 Mirror Blank Kits

 

Item code        Description                              Price                                        All prices exclude shipping

                                                                                                                        6% sales tax applies to Michigan residents

MBS-06            6 inch kit                                 $229.00

 

MBS-08            8 inch kit                                 $339.00

 

MBS-10            10 inch kit                               $559.00

 

MBS-12            12 inch kit                               $899.00

 

MBS-14            14 inch kit                               $1269.00

 

MBS-16            16 inch kit                               $1829.00

 

MBS-18            18 inch kit                               $2439.00

 

 

Ready-to-Polish Supremax-33 kits

 

Item code        Description                              Price                                        All prices exclude shipping

                                                                                                                        6% sales tax applies to Michigan residents

RPS-06             6 inch kit                                 $429.00

 

RPS-08             8 inch kit                                 $639.00

 

RPS-10             10 inch kit                               $919.00

 

RPS-12             12 inch kit                               $1369.00

 

RPS-14             14 inch kit                               $1889.00

 

RPS-16             16 inch kit                               $2649.00

 

RPS-18             18 inch kit                               $3579.00

 

 

Zerodur

 

Schott has been the leading innovator in glass substrates for more than 100 years.  In addition to inventing borosilicate glass, Schott also pioneered the development of non-glass substrates.  Zerodur looks and feels like glass, but its chemical composition defines it as a ceramic.  Most of its characteristics are very close to those of optical glass, but its thermal expansion coefficient is less than 0.02 x 10-6 K-1.  This material is ideal for use as a telescope mirror.

 

 

Zerodur Mirror Blank Kits

 

Item code        Description                              Price*                                      All prices exclude shipping

                                                                                                                        6% sales tax applies to Michigan residents

MBZ-06           6 inch kit                                 $449.00

 

MBZ-08           8 inch kit                                 $769.00

 

MBZ-10           10 inch kit                               $1399.00

 

MBZ-12           12 inch kit                               $2159.00

 

MBZ-14           14 inch kit                               $3899.00

 

MBZ-16           16 inch kit                               $5499.00

 

MBZ-18           18 inch kit                               $7499.00

 

 

Ready-to-Polish Zerodur kits

 

Item code        Description                              Price*                                      All prices exclude shipping

                                                                                                                        6% sales tax applies to Michigan residents

RPZ-06             6 inch kit                                 $669.00

 

RPZ-08             8 inch kit                                 $1099.00

 

RPZ-10             10 inch kit                               $1799.00

 

RPZ-12             12 inch kit                               $2659.00

 

RPZ-14             14 inch kit                               $4559.00

 

RPZ-16             16 inch kit                               $6699.00

 

RPZ-18             18 inch kit                               $8999.00

 

*Zerodur prices are subject to availability and may change without notification

 

 

Finished Mirrors

 

Yes, we do produce finished mirrors.  However, we do not advertise or list prices for the following reasons:

1)      We do not use machines to grind, polish, or figure.  All of our mirrors are produced by the hands of experienced and dedicated opticians.  This makes them more expensive than our competitors, but our substrates are of much higher quality and the final figure is typically of higher quality as well.  Bottom line; we aren’t trying to compete.

2)      We are operating at full capacity and our lead time currently exceeds 12 months.

3)      Production costs fluctuate.  We already operate under a slim margin and with a lead time of one year, we can’t allow ourselves to take a loss due to an unforeseen increase in costs.

 

Our process for ordering a finished mirror is as follows:

1)      Contact us with your intent to order a mirror including the desired specifications of substrate, diameter, focal ratio, and maximum wave front error and your request will enter the queue based on the date your request was received.

2)      We will confirm that we have received your request with an email reply.

3)      When we can begin a new mirror, we will contact the first queued request with the quote via email and a phone call.

4)      When you have received your quote, you will have a total of 7 days to make a minimum 50% non-refundable deposit, the balance due upon completion.

5)      If the required deposit has not been received, you will have to restart the process by requesting a new quote and returning to the end of the queue.  If you happen to receive your quote at a bad time, perhaps during your vacation or something, don’t worry; we will work with you to ensure you get the mirror you want.  However, contact must be made within the 7 day period or we will move on to the next queued request.

6)      Upon remittance of your deposit, you may be as little as 12 weeks from receiving your mirror.

 

This process may seem arbitrarily draconian, but it keeps our costs down and prevents us from wasting time dealing with people who are simply price shopping.  If price is an issue and you want to know if we are cheaper than some other company, please don’t waste our time.  Our product is not for you.  The best way to get an exquisite mirror in an inexpensive fashion is to fabricate it yourself, and those prices are listed above.

 

 

                        Miscellaneous Products

 

We will endeavor to provide other high quality items for sale, like hard to find items for building your knife-edge tester, mirror cells, secondaries and supports, etc.  We will not offer a product for sale in this section if there is any doubt whether it is the highest quality offering on the market.

 

Pre-built Tools

 

For a nominal fee, we will build your tool and ship it with your kit.  If you are ordering a Ready-to-Polish kit, the tool will automatically be provided.  If you are weary about getting the tool constructed properly you can request this service by including the code with your order request.  This is only available to a purchaser of a Castle-Emerald kit.  Order only the same diameter as the mirror blank you are ordering.

 

Item Code        Description                  Price

TOOL-06          6 inch tool                   $18.00

TOOL-08          8 inch tool                   $22.00

TOOL-10          10 inch tool                 $25.00

TOOL-12          12 inch tool                 $30.00

TOOL-14          14 inch tool                 $35.00

TOOL-16          16 inch tool                 $40.00

TOOL-18          18 inch tool                 $45.00

 

 

Quartz and Dream Cellular Kits

 

Yes, we sell both.  If you wish to order a kit with either Fused Quartz or a Dream Cellular blank, contact us.