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telescopemirrors

* This thickness is nominal and can vary. Please contact us if you wish to specify your thickness precisely.
Standard

Our Standard mirrors are produced from quality low expansion Suprax glass from Schott Germany. 1/4 PV wavefront specification giving excellent images for any choice of subject. Coated with now world famous Hilux high performance coatings as standard. The majority of these primaries we make are bought by amateur telescope makers or just customers who want to upgrade the optics in their imported, usually Chinese branded telescope. These mirrors or any telescope we may supply with these mirrors is not supplied with a full Zygo report.
Professional
Professional Grade Optics primaries are produced from quality low expansion Suprax glass from Schott Germany. 1/6 PV wavefront specification giving excellent images for any choice of subject. Coated with highly reflective Hilux, you are guaranteed much brighter images than most telescopes on the market. These mirrors are exceptional in performance and can be relied upon 100% to give virtually flawless images. Supplied with full Zygo interferometer report.
Research
We measure regularly in their manufacturing process and, Zygo interferometer tests confirm, our Research Grade optics are some of the finest optics available anywhere at any price. Produced from quality low expansion Suprax glass from Schott Germany. 1/8 PV wavefront specification giving excellent images for any choice of subject. Coated with Hilux enhanced optical coatings. These mirrors are virtually unsurpassed in performance and will produce some of the finest images available for either visual, film or CCD work. Supplied with full Zygo interferometer report.
Ultra
With our continuous developments in optics we have now reached a position where we can offer with 100% reliability, optics which we believe are the best available anywhere in the world. Our Ultra range has Strehl values typically around 99% with RMS values of the order of 0.02PV. Coupled with a guaranteed PV wavefront error so small, it often is less than 1/10PV wavefront. We fit these as a matter of course to our CT range of ‘scopes ensuring their performance is even further enhanced with a virtual zero expansion, and flexure, high specification Carbon Fibre tube. Each is Supplied with full Zygo interferometer report.
These primary mirrors are expensive, they are also not recommended for just occasional star gazing. Their incredible accuracies and reflective characteristics lend themselves to the realms of optics we have supplied to:

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OPTICS : Telescope Mirrors : Elliptical Flats : Mirror Cells : Zygo : Optics Finish Note : PV Explained
Mirror Recoating : All About Optics : Optical Coatings : Optical + Telescope Testing

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Mirror Type

Grade

Secondary Size

Ultrascope 150 f4

Mirror Type

Grade

Secondary Size

150 f5 Primary

Mirror Type

Grade

Secondary Size

150 f8 Primary

Mirror Type

Grade

Secondary Size

200 f4.5 Primary

Mirror Type

Grade

Secondary Size

200 f6 Primary

Mirror Type

Grade

Secondary Size

250 f4.8 Primary

Mirror Type

Grade

Secondary Size

300 f4 Primary

Mirror Type

Grade

Secondary Size

300 f5.3 Primary

Mirror Type

Grade

Secondary Size

350 f4.7 Primary

Mirror Type

Grade

Secondary Size

400 f4 Primary

Mirror Type

Grade

Secondary Size

500 f4 Primary

Mirror Type

Grade

Secondary Size

250 f6.3 Primary

Mirror Sets (comprises circular primary and eliptical secondary) To buy - click on a price

Primary
Mirror type

Secondary
supplied
Minor Axis
mm

Focal length
nominal
mm

Edge
thickness
mm *

Diameter
mm

Weight
g

Standard
Grade

Professional
Grade

Research
Grade

Ultra
Grade

Ultrascope
150 f4

50

600

18

151

745

155

205

240

250

150 f5

50

750

18

151

745

155

205

240

250

150 f8

36

1200

17

150

715

155

205

240

250

200 f4.5

63

900

20

201

1400

290

360

415

430

200 f6

50

1200

20

201

1400

285

350

405

420

250 f4.8

63

1200

26

250

2700

375

460

525

575

250 f6.3

50

1600

26

249

2825

375

460

525

575

300 f4

75

1200

37

300

5600

525

690

780

875

300 f5.3

63

1600

37

300

5610

500

665

755

850

350 f4.7

75

1600

39

353

8280

945

1155

1265

1385

400 f4

82

1600

41

403

11600

1515

1770

1925

2070

500 f4

100

2000

57

504

24650

2170

2550

2710

3075

Primary Mirror Dimensions

Primary
Mirror type

Focal length
nominal
mm

Edge
thickness
mm *

Diameter
mm

Weight
g

Ultrascope
150 f4

600

18

151

745

150 f5

750

18

151

745

150 f8

1200

17

150

715

200 f4.5

900

20

201

1400

200 f6

1200

20

201

1400

250 f4.8

1200

26

250

2700

250 f6.3

1600

26

249

2825

300 f4

1200

37

300

5600

300 f5.3

1600

37

300

5610

350 f4.7

1600

39

353

8280

400 f4

1600

41

403

11600

500 f4

2000

57

504

24650

At Orion Optics UK we pride ourselves on having some of the finest optical technicians anywhere in the world. The optics we produce are world renowned for being among the best available. 
Each optical surface is tested up to 29 times as it passes through its many processes of being turned from a blank piece of glass to a highly accurate figured mirror or lens. Below is our selection of Telescope Mirrors available to purchase and a brief description of each grade's qualities.