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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.

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Orion Optics UK 3" down to 2" push fit with 10mm BFD
$200.29 - $200.29
$200.29
$200.29 - $200.29
$200.29

Orion Optics UK 3" down to 2" push fit with 10mm BFD

OOUK-3-DOWN-2-PUSH-10MM

3" to 2" push fit 10mm back focal distance Individually machined to order in the UK Description Specifications In the Box Warranty 3" to ...

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$200.29 - $200.29
$200.29
$200.29 - $200.29
$200.29
Orion Optics UK 300mm Dobsonian Mount
$453.61 - $453.61
$453.61
$753.61
$753.61 - $753.61
$753.61

Orion Optics UK 300mm Dobsonian Mount

OOUK-300MM-DOBSONIAN-MOUNT-ACCEOTS-TUBES

Designed for Optical Tubes up to 236mm in Diameter Classic Dobsonian Alt-Azimuth Design Provides a Stable, Vibration-Free Platform Ideal for High-...

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$453.61 - $453.61
$453.61
$753.61
$753.61 - $753.61
$753.61
Orion Optics UK 300mm f4 Standard 1/4pv mirror
$867.59 - $1,747.96
$867.59
$947.59 - $1,827.96
$947.59 - $1,827.96
$947.59

Orion Optics UK 300mm F/4 Mirror

Options available

300mm aperture, f/4 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descriptio...

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$867.59 - $1,747.96
$867.59
$947.59 - $1,827.96
$947.59 - $1,827.96
$947.59
Orion Optics UK 300mm f5.3 Standard 1/4pv mirror
$802.49 - $1,595.56
$802.49
$882.49 - $1,675.56
$882.49 - $1,675.56
$882.49

Orion Optics UK 300mm F/5.3 Mirror

Options available

300mm aperture, f/5.3 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descript...

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$802.49 - $1,595.56
$802.49
$882.49 - $1,675.56
$882.49 - $1,675.56
$882.49
Orion Optics UK 300mm Large Dob brake (recommended)
$93.76 - $93.76
$93.76
$93.76 - $93.76
$93.76

Orion Optics UK 300mm Large Dob brake (recommended)

OOUK-300MM-LARGE-DOB-BRAKE-RECOMMENDED

Recommended for the 300mm Dobsonian mount Smooth, controllable altitude motion CNC machined in the UK Description Specifications In the Box War...

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$93.76 - $93.76
$93.76
$93.76 - $93.76
$93.76
Orion Optics UK 300mm Trunion rings and blocks to fit OOUK 12" telescopes
$147.03 - $147.03
$147.03
$147.03 - $147.03
$147.03

Orion Optics UK 300mm Trunion rings and blocks to fit OOUK 12" telescopes

OOUK-300MM-TRUNION-RINGS-BLOCKS-OOUK

Sized for 300mm Dobsonian mounts CNC machined in the UK Description Specifications In the Box Warranty Trunion Rings and Blocks -- OOUK 1...

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$147.03 - $147.03
$147.03
$147.03 - $147.03
$147.03
Orion Optics UK 300mm Trunion rings, spacers and blocks for 3rd party telescopes.
$181.28 - $181.28
$181.28
$181.28 - $181.28
$181.28

Orion Optics UK 300mm Trunion rings, spacers and blocks for 3rd party telescopes.

OOUK-300MM-TRUNION-RINGS-SPACERS-BLOCKS

Sized for 300mm Dobsonian mounts CNC machined in the UK Description Specifications In the Box Warranty 300mm Trunion Rings, Spacers and B...

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$181.28 - $181.28
$181.28
$181.28 - $181.28
$181.28
Orion Optics UK 350mm Dobsonian Mount
$613.40 - $613.40
$613.40
$913.40
$913.40 - $913.40
$913.40

Orion Optics UK 350mm Dobsonian Mount

OOUK-350MM-DOBSONIAN-MOUNT-ACCEOTS-TUBES

Accommodates large Newtonian optical tubes Designed for 350mm class telescopes Accepts tube diameters up to 385mm Classic Dobsonian alt-azimuth de...

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$613.40 - $613.40
$613.40
$913.40
$913.40 - $913.40
$913.40
Orion Optics UK 350mm f4.7 Standard 1/4pv mirror
$1,567.44 - $2,338.32
$1,567.44
$1,647.44 - $2,418.32
$1,647.44 - $2,418.32
$1,647.44

Orion Optics UK 350mm F/4.7 Mirror

Options available

350mm aperture, f/4.7 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descript...

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$1,567.44 - $2,338.32
$1,567.44
$1,647.44 - $2,418.32
$1,647.44 - $2,418.32
$1,647.44
Orion Optics UK 350mm Large Dob brake (recommended)
$93.76 - $93.76
$93.76
$93.76 - $93.76
$93.76

Orion Optics UK 350mm Large Dob brake (recommended)

OOUK-350MM-LARGE-DOB-BRAKE-RECOMMENDED

Recommended for the 350mm Dobsonian mount Smooth, controllable altitude motion CNC machined in the UK Description Specifications In the Box War...

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$93.76 - $93.76
$93.76
$93.76 - $93.76
$93.76
Orion Optics UK 350mm Trunion rings and blocks to fit OOUK 14" telescopes
$153.18 - $153.18
$153.18
$153.18 - $153.18
$153.18

Orion Optics UK 350mm Trunion rings and blocks to fit OOUK 14" telescopes

OOUK-350MM-TRUNION-RINGS-BLOCKS-OOUK

Sized for 350mm Dobsonian mounts CNC machined in the UK Description Specifications In the Box Warranty Trunion Rings and Blocks -- OOUK 1...

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$153.18 - $153.18
$153.18
$153.18 - $153.18
$153.18
Orion Optics UK 350mm Trunion rings, spacers and blocks for 3rd party telescopes.
$214.83 - $214.83
$214.83
$214.83 - $214.83
$214.83

Orion Optics UK 350mm Trunion rings, spacers and blocks for 3rd party telescopes.

OOUK-350MM-TRUNION-RINGS-SPACERS-BLOCKS

Sized for 350mm Dobsonian mounts CNC machined in the UK Description Specifications In the Box Warranty 350mm Trunion Rings, Spacers and B...

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$214.83 - $214.83
$214.83
$214.83 - $214.83
$214.83
Orion Optics UK 35x49x10mm Plate elliptical flat mirror
$91.79 - $1,539.88
$91.79 - $1,539.88
$91.79 - $1,539.88
$91.79

Orion Optics UK 35x49x10mm Plate elliptical flat mirror

Options available

35x49mm minor/major axis 10mm thick Plate substrate Precision ground and coated in the UK Description Specifications In the Box Warranty ...

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$91.79 - $1,539.88
$91.79 - $1,539.88
$91.79 - $1,539.88
$91.79
Orion Optics UK 400mm Dobsonian Mount
$877.06 - $877.06
$877.06
$1,177.06
$1,177.06 - $1,177.06
$1,177.06

Orion Optics UK 400mm Dobsonian Mount

OOUK-400MM-DOBSONIAN-MOUNT-ACCEOTS-TUBES

Designed for 400mm Newtonian Optical Tubes Accepts Tube Diameters up to 434mm Classic Dobsonian Rocker Box Design Provides a Stable, Vibration-Fre...

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$877.06 - $877.06
$877.06
$1,177.06
$1,177.06 - $1,177.06
$1,177.06
Orion Optics UK 400mm f4 Standard 1/4pv mirror
$2,438.93 - $3,905.21
$2,438.93 - $3,905.21
$2,438.93 - $3,905.21
$2,438.93

Orion Optics UK 400mm F/4 Mirror

Options available

400mm aperture, f/4 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descriptio...

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$2,438.93 - $3,905.21
$2,438.93 - $3,905.21
$2,438.93 - $3,905.21
$2,438.93
Orion Optics UK 400mm Large Dob brake (recommended)
$93.76 - $93.76
$93.76
$93.76 - $93.76
$93.76

Orion Optics UK 400mm Large Dob brake (recommended)

OOUK-400MM-LARGE-DOB-BRAKE-RECOMMENDED

Recommended for the 400mm Dobsonian mount Smooth, controllable altitude motion CNC machined in the UK Description Specifications In the Box War...

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$93.76 - $93.76
$93.76
$93.76 - $93.76
$93.76
Orion Optics UK 400mm Trunion rings and blocks to fit OOUK 16" telescopes
$181.95 - $181.95
$181.95
$181.95 - $181.95
$181.95

Orion Optics UK 400mm Trunion rings and blocks to fit OOUK 16" telescopes

OOUK-400MM-TRUNION-RINGS-BLOCKS-OOUK

Sized for 400mm Dobsonian mounts CNC machined in the UK Description Specifications In the Box Warranty Trunion Rings and Blocks -- OOUK 1...

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$181.95 - $181.95
$181.95
$181.95 - $181.95
$181.95
Orion Optics UK 400mm Trunion rings, spacers and blocks for 3rd party telescopes.
$243.60 - $243.60
$243.60
$243.60 - $243.60
$243.60

Orion Optics UK 400mm Trunion rings, spacers and blocks for 3rd party telescopes.

OOUK-400MM-TRUNION-RINGS-SPACERS-BLOCKS

Sized for 400mm Dobsonian mounts CNC machined in the UK Description Specifications In the Box Warranty 400mm Trunion Rings, Spacers and B...

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$243.60 - $243.60
$243.60
$243.60 - $243.60
$243.60
Orion Optics UK 500mm f4 Standard 1/4pv mirror
$3,334.09 - $5,494.30
$3,334.09 - $5,494.30
$3,334.09 - $5,494.30
$3,334.09

Orion Optics UK 500mm F/4 Mirror

Options available

500mm aperture, f/4 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descriptio...

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$3,334.09 - $5,494.30
$3,334.09 - $5,494.30
$3,334.09 - $5,494.30
$3,334.09
Orion Optics UK 50mm Angled Finder
$155.91 - $155.91
$155.91
$175.91
$175.91 - $175.91
$175.91

Orion Optics UK 50mm Angled Finder

OOUK-IDEAL-ANGLED-FINDER-UPGRADE-50MM

50mm Aperture 90-Degree Angled Viewing Design Fully Coated Optics Reticule Crosshairs for Centering Quick-Release Dovetail Mounting Shoe Spring-Lo...

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$155.91 - $155.91
$155.91
$175.91
$175.91 - $175.91
$175.91
Orion Optics UK 50mm Angled Finderscope
$155.91 - $155.91
$155.91
$175.91
$175.91 - $175.91
$175.91

Orion Optics UK 50mm Angled Finderscope

OOUK-AG12-ANGLED-FINDER-50MM-WIDE

50mm Aperture 90-Degree Angled Viewing Fully Coated Optics Crosshair Reticle for Centering Quick-Release Dovetail Shoe Description FAQ Specific...

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$155.91 - $155.91
$155.91
$175.91
$175.91 - $175.91
$175.91
Orion Optics UK 50mm Straight-Through Wide Field Finder
$141.11 - $141.11
$141.11
$161.11
$161.11 - $161.11
$161.11

Orion Optics UK 50mm Straight-Through Wide Field Finder

OOUK-AG12-STRAIGHT-FINDER-50MM-WIDE

50mm Aperture Straight-Through Optical Path Fully Coated Optics Integrated Crosshairs for Centering Quick-Release Dovetail Shoe Description FAQ...

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$141.11 - $141.11
$141.11
$161.11
$161.11 - $161.11
$161.11
Orion Optics UK 85mm down to M42mm thread AO7, ATIK383L using 15mm BFD
$252.08 - $252.08
$252.08
$252.08 - $252.08
$252.08

Orion Optics UK 85mm down to M42mm thread AO7, ATIK383L using 15mm BFD

OOUK-85MM-DOWN-M42MM-THREAD-AO7

85mm down to M42mm thread AO7, ATIK383L 15mm back focal distance For AG and ODK telescopes Individually machined to order in the UK Description...

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$252.08 - $252.08
$252.08
$252.08 - $252.08
$252.08
Orion Optics UK 85mm Fixed Adaptor Ring (5mm BFD)
$141.11 - $141.11
$141.11
$141.11 - $141.11
$141.11

Orion Optics UK 85mm Fixed Adaptor Ring (5mm BFD)

OOUK-85MM-FIXED-ADAPTOR-RING-5MM

85mm Diameter Adaptor Ring Provides 5mm of Back Focus Distance (BFD) Fixed, Non-Adjustable Spacer Design Ensures Rigid, Tilt-Free Connections Manu...

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$141.11 - $141.11
$141.11
$141.11 - $141.11
$141.11