© Reginato Telescopes
 REGINATO TELESCOPES

Supremax ® BLANKS

Fine annealed Supremax blanks are borosilicate glass disks, extracted from a plate of Schott Supremax® with a low coefficient of thermal expansion (3.25x10-6/°C) while the standard glass (sodic calcium ) has got 8.5x10-6/°C. To obtain blanks with a concave surface, we first give it a spherical shape with the requested radius; the blank is then treated for fine annealing process that lasts 72 to 120 hours, depending on disk diameter and thickness. All stresses coming from the fast cooling of the vitreous cast mass are removed; the blank optical surface is then flattened again and roughly shaped to the requested concave surface. The blank is now ready for next glossing phases.  
255(*)		38	        335,00 255(*)		45	        387,00 305(*)		38	        448,00 305(*)		45	        513,00 305(*)		52	         570,00 355		38	       585,00 355		45	       652,00 355		52	       711,00 410		38	       861,00 410		45	       916,00 410		52	     1.018,00 460		38	     1.043,00 460		45	     1.178,00 460		52	     1.373,00 510		38	     1.342,00 510		45	     1.459,00      Diameter       Thick.		Price mm	         mm		Euro 510		52	     1.574,00 560		38	     1.391,00 560		45	     1.593,00 560		52	     1.812,00 610		38	     1.634,00 610		45	     1.904,00 610		52	     2.173,00 635		45	     2.159,00 635		52	     2.510,00 710		45	     2.660,00 710		52	     3.110,00 760		52	     3.562,00 810		52	     4.174,00 910		52	     5.335,00
Polarized light image on blank, before and after annealing
These are sodic calcium glass disks obtained from commercial grade glass plates; they are very useful when shaped for use as tools in advanced grinding or glossing phases of mirrors. All these glass disks can be provided roughly shaped concave or convex.
We are able to do any kind of working on our production or customer provided blanks, up to 32 inches (810mm) in diameter, and up to 8" (200mm) in thickness.

TOOLS (*)

255    		24	         43,00 305     		24		62,00 355    		24		81,00 410    		24	        102,00 460	          24	        117,00 510		24	        140,00 610		24	        181,00      Diameter       Thick.		Price mm	         mm		Euro
Standard tolerance on the diameter are ±2mm, on the thickness are ±1.0 mm . (*) Sales realizable only after buy a blank. Price excluded Vat.

Working on blanks and tools

255    	    	     32,00		               30,00			     28,00 305     	    	     37,00		               33,00			     30,00 355    	 	     43,00		               39,00			     36,00 410    	  	     60,00		               52,00			     48,00 460	               71,00		               63,00			     57,00 510		     92,00		               83,00			     78,00 610		    137,00		              123,00			    113,00      Diameter      	 F. 3.0 - 3.9			F. 4.0 - 4.9			more F. 5.0  mm	               Euro            		      Euro			    Euro CURVE GENERATING SERVICE - CONCAVE SURFACE 760		    242,00		              210,00			    183,00 810		    282,00 255    	    	     40,00		               37,00			     34,00 305     	     	     45,00		               41,00			     37,00 355    	     	     58,00		               55,00			     50,00 410    	     	     74,00		               68,00			     62,00 460	               88,00		               81,00			     75,00 510		    111,00		               99,00			     91,00 610		    158,00		              144,00			    131,00  Diameter      	 F. 3.0 - 3.9			F. 4.0 - 4.9			more F. 5.0  mm	               Euro            		      Euro			    Euro CURVE GENERATING SERVICE - CONVEX SURFACE
Standard tolerance on focal length are ± 1.5%. Curve generating service price is connect to work on our blanks. Orders are confirmed on receipt of an advance of 15-25% of price list. Packing is included on the price, delivery is at the customer’s expense. Price excluded Vat.
Flat surface
Concave surface
Convex surface
Rectfied edge
Central hole
Conical shape
Standard tolerance on the diameter are ±2mm, on the thickness are ±1.0 mm . (*) Sales realizable only after buy a blank. Price excluded Vat.
© Reginato Telescopes
 REGINATO TELESCOPES
Supremax ® BLANKS
Fine annealed Supremax blanks are borosilicate glass disks, extracted from a plate of Schott Supremax® with a low coefficient of thermal expansion (3.25x10-6/°C) while the standard glass (sodic calcium ) has got 8.5x10-6/°C. To obtain blanks with a concave surface, we first give it a spherical shape with the requested radius; the blank is then treated for fine annealing process that lasts 72 to 120 hours, depending on disk diameter and thickness. All stresses coming from the fast cooling of the vitreous cast mass are removed; the blank optical surface is then flattened again and roughly shaped to the requested concave surface. The blank is now ready for next glossing phases.  
Polarized light image on blank , before and after annealing
These are sodic calcium glass disks obtained from commercial grade glass plates; they are very useful when shaped for use as tools in advanced grinding or glossing phases of mirrors. All these glass disks can be provided roughly shaped concave or convex.
We are able to do any kind of working on our production or customer provided blanks, up to 32 inches (810mm) in diameter, and up to 8" (200mm) in thickness.
TOOLS (*)
255              24	        43,00        305              24	        62,00        355              24	        81,00        410              24	       102,00        460	          24	       117,00        510	          24	       140,00        610	          24	       181,00    Diameter       Thick.        Price        mm	         mm	        Euro
Standard tolerance on the diameter are ±2mm, on the thickness are ±1.0 mm . (*) Sales realizable only after buy a blank. Price excluded Vat.

Working on blanks and tools

255    	     32,00		   30,00		     28,00 305     	     37,00		   33,00		     30,00 355    	     43,00		   39,00		     36,00 410    	    60,00		   52,00		     48,00 460	               	    71,00	                    63,00		     57,00 510		    92,00		   83,00		     78,00 610		  137,00		 123,00		    113,00        Diameter      	 F. 3.0 - 3.9	F. 4.0 - 4.9 	more F. 5.0          mm	                      Euro            	    Euro        	     Euro CURVE GENERATING SERVICE - CONCAVE SURFACE 760		  242,00		 210,00		    183,00 810		  282,00 255    	    40,00		   37,00		     34,00 305     	    45,00	                    41,00		     37,00 355    	    58,00		   55,00		     50,00 410    	    74,00		   68,00		     62,00 460	                     88,00		   81,00		     75,00 510		   111,00		   99,00		     91,00 610		   158,00		 144,00		    131,00    Diameter      	 F. 3.0 - 3.9	F. 4.0 - 4.9	more F. 5.0  mm	                      Euro            	    Euro		     Euro CURVE GENERATING SERVICE - CONVEX SURFACE
Standard tolerance on focal length are ± 1.5%. Curve generating service price is connect to work on our blanks. Orders are confirmed on receipt of an advance of 15-25% of price list. Packing is included on the price, delivery is at the customer’s expense. Price excluded Vat.
Flat surface
Concave surface
Convex surface
Rectfied edge
Central hole
Conical shape
Standard tolerance on the diameter are ±2mm, on the thickness are ±1.0 mm . (*) Sales realizable only after buy a blank. Price excluded Vat.
255(*)	          38	          335,00 255(*)	          45	          387,00 305(*)	          38	          448,00 305(*)	          45	          513,00 305(*)	            52	            570,00 355	          38	          585,00 355	          45	          652,00 355	          52	          711,00 410	          38	          861,00 410	          45	          916,00 410	          52	        1.018,00 460	          38	        1.043,00 460	          45	        1.178,00 460	          52	        1.373,00 510	         38	        1.342,00 510	         45	        1.459,00      Diameter       Thick.          Price mm	         mm	           Euro 510	         52	        1.574,00 560	         38	        1.391,00 560	        45	        1.593,00 560	        52	        1.812,00 610	        38	        1.634,00 610	       45	        1.904,00 610	       52	        2.173,00 635	       45	        2.159,00 635	       52	        2.510,00 710	       45	        2.660,00 710	       52	        3.110,00 760	       52	        3.562,00 810	       52	        4.174,00 910	       52	        5.335,00