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Your partner for astronomy

Star diagonals are important devices that divert the path of the beam of light coming from the telescope so that you do not have to strain to see, but can view comfortably and hence enjoy your observing more. The star diagonal’s prism deflects the light by 90°. Refractors, Schmidt-Cassegrain and Maksutov optics often need this device.

Amici prisms divert the light, usually by 45° or even 90°, providing an upright and non-reversed image for terrestrial observing.

Optical design & connection

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Omegon Star diagonal with 99% reflection, 2"
Omegon
Star diagonal with 99% reflection, 2"
( 5 / 5 )
$ 219.00
ready for shipping in 24 h
Omegon Amici prism 45° 1.25"
Omegon
Amici prism 45° 1.25"
$ 44.90
ready for shipping in 24 h
Omegon 1.25", 90° Amici prism
Omegon
1.25", 90° Amici prism
$ 29.90
ready for shipping in 24 h
Omegon 45°, 1.25'' to 1.25'' Amici prism
Omegon
45°, 1.25'' to 1.25'' Amici prism
$ 99.00
ready for shipping in 24 h
Omegon Carbonline 2'', 90° mirror star diagonal, 99% dielectric
Omegon
Carbonline 2'', 90° mirror star diagonal, 99% dielectric
$ 199.00
ready for shipping in 24 h
Omegon Mirror star diagonal, 90°, 1.25"
Omegon
Mirror star diagonal, 90°, 1.25"
$ 29.90
ready for shipping in 24 h
Omegon 1,25'' Amici Prism 90°
Omegon
1,25'' Amici Prism 90°
( 5 / 5 )
$ 169.00
ready for shipping in 24 h
Omegon Carbonline 1.25'', 90° mirror star diagonal, 99% dielectric
Omegon
Carbonline 1.25'', 90° mirror star diagonal, 99% dielectric
$ 139.00
ready for shipping in 24 h
Meade 1.25" 90° star diagonal
Meade
1.25" 90° star diagonal
$ 63.00
ready for shipping in 24 h
Omegon Pro Penta Prisma 90° 1.25''
Omegon
Pro Penta Prisma 90° 1.25''
$ 239.00
ready for shipping in 24 h
Omegon 2'', 45° Amici prism
Omegon
2'', 45° Amici prism
$ 199.00
ready for shipping in 24 h
Omegon Pro 1.25'', 45° penta-prism
Omegon
Pro 1.25'', 45° penta-prism
$ 189.00
ready for shipping in 24 h
Omegon 45°, 2'' to 1.25'' Amici prism
Omegon
45°, 2'' to 1.25'' Amici prism
$ 219.00
ready for shipping in 24 h
Auriga Amici prism 45° 1,25"
Auriga
Amici prism 45° 1,25"
$ 94.00
ready for shipping in 24 h
William Optics Diagonal prism RedCat 90° 1,25"
William Optics
Diagonal prism RedCat 90° 1,25"
$ 168.00
ready for shipping in 24 h
William Optics Diagonal mirror Dura Bright 90° 2"
William Optics
Diagonal mirror Dura Bright 90° 2"
$ 242.00
ready for shipping in 24 h
TeleVue Everbrite 1.25" 90° star diagonal
TeleVue
Everbrite 1.25" 90° star diagonal
$ 369.00
ready for shipping in 24 h
TeleVue Everbrite 2" 90° mirror star diagonal
TeleVue
Everbrite 2" 90° mirror star diagonal
$ 630.00
ready for shipping in 24 h
William Optics Dielectric Dura Bright Star Mirror Diagonal for Star71 Telescope
William Optics
Dielectric Dura Bright Star Mirror Diagonal for Star71 Telescope
$ 200.00
ready for shipping in 24 h
Denkmeier IVB Power Switch Star Diagonal S2
Denkmeier
IVB Power Switch Star Diagonal S2
$ 990.00
ready for shipping in 3-5 weeks
TS Optics Diagonal mirror 90° SC/2"
TS Optics
Diagonal mirror 90° SC/2"
$ 159.00
ready for shipping in 1-2 weeks
Auriga Diagonal mirror 90° 2"
Auriga
Diagonal mirror 90° 2"
$ 210.00
ready for shipping in 1-2 weeks
Skywatcher Amici prism 90° 1,25"
Skywatcher
Amici prism 90° 1,25"
$ 58.00
ready for shipping in 3-7 days
Bresser Amici prism 90° 1,25"
Bresser
Amici prism 90° 1,25"
$ 52.00
ready for shipping in 24 h
Celestron zenith prism 90°, 1.25"
Celestron
zenith prism 90°, 1.25"
( 5 / 5 )
$ 48.90
ready for shipping in 24 h
TS Optics Diagonal mirror 90°, dielectric full coating, 1,25"
TS Optics
Diagonal mirror 90°, dielectric full coating, 1,25"
$ 106.00
ready for shipping in 24 h
Bresser Star diagonal 99 Percent Reflectivity 2"
Bresser
Star diagonal 99 Percent Reflectivity 2"
$ 84.00
ready for shipping in 24 h
Baader Planetarium 45° Amici prism, SC to 2"
Baader
Planetarium 45° Amici prism, SC to 2"
$ 253.00
ready for shipping in 24 h
Baader 45° picture-putting up AmiciPrisma for Maxbright binocular
Baader
45° picture-putting up AmiciPrisma for Maxbright binocular
$ 101.00
ready for shipping in 1-2 weeks
Artesky Diagonal mirror 90° 1.25"
Artesky
Diagonal mirror 90° 1.25"
( 5 / 5 )
$ 84.00
ready for shipping in 24 h
Skywatcher Diagonal Mirror Deluxe 90° 1,25"
Skywatcher
Diagonal Mirror Deluxe 90° 1,25"
$ 132.00
ready for shipping in 3-7 days
Auriga Diagonal mirror 90° 1.25"
Auriga
Diagonal mirror 90° 1.25"
( 5 / 5 )
$ 116.00
ready for shipping in 24 h
Skywatcher Diagonal Mirror Deluxe 90° 2"
Skywatcher
Diagonal Mirror Deluxe 90° 2"
$ 168.00
Product can be shipped as of 01.01.2023
Meade Diagonal mirror Series 5000 2"
Meade
Diagonal mirror Series 5000 2"
$ 274.00
ready for shipping in 24 h
Artesky Diagonal mirror 90° 2"
Artesky
Diagonal mirror 90° 2"
$ 146.00
ready for shipping in 3-5 weeks
TS Optics Diagonal mirror 90°, dielectric full coating, 2'' Quartzprotection
TS Optics
Diagonal mirror 90°, dielectric full coating, 2'' Quartzprotection
$ 200.00
ready for shipping in 24 h