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1.25 & 2 Inch Erecting Prisms

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Arcturus .965-1.25 Hybrid Prism Diagonal

Prism with upright image and correct imaging from left to right. Metal body inserts into 1" focuser to accept 1.25" eyepiece without neck fatigue.


Our price: $40.00 (€34.80)
Market price: $55.00 , save 27%
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Arcturus 1.25 45 Degree Erect Image Diagonal for Refractors

A great accessory for daytime terrestrial viewing with your telescope.

This 1.25” diagonal produces right side up and left-to-right correct images when used with refractors and catadioptric (Schmidt-Cassegrain) telescopes.

Inserts into 1.25” focusers or visual backs. Accepts standard 1.25” eyepieces.


Our price: $35.00 (€30.45)
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Arcturus 1.25 90 Degree Erect Prism

We have just added a new item to our ST Series of optics, the 1.25" 90 Degree Erect Image Diagonal. The ST Series is well known for high quality at an attractive price and this Diagonal continues that tradition. These diagonals offer a 90 degree viewing angle and present an upright and correct image. They are primarily intended for viewing terrestrial objects such as for nature viewing, but can be used for astronomical objects as well to help you sort out a star map without reversed or mirrored images! Includes dust cap.


Our price: $45.00 (€39.15)
Market price: $65.00 , save 31%
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Celestron 1.25 45 Degree Erect Image Diagonal

A great accessory for daytime terrestrial viewing with your telescope.

This 1.25” diagonal produces right side up and left-to-right correct images when used with refractors and catadioptric (Schmidt-Cassegrain) telescopes.

Inserts into 1.25” focusers or visual backs. Accepts standard 1.25” eyepieces.


Our price: $39.95 (€34.76)
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Meade #933 45° Erecting Prism (1.25") for Meade ETX-60, ETX-70 and ETX-80

Meade Model 933 Image Erecting Prism #07220 for ETX-60, ETX-70 and ETX-80. Produces a correctly oriented image and convenient 45° observing angle for terrestrial observations. A great item for a home with a view or nature watching.


Our price: $49.99 (€43.49)
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Meade Model 928 Image Erecting Prism for Meade refracting telescopes

A great accessory for daytime terrestrial viewing with your telescope.

This 1.25” diagonal produces right side up and left-to-right correct images when used with refractors and catadioptric (Schmidt-Cassegrain) telescopes.

Inserts into 1.25” focusers or visual backs. Accepts standard 1.25” eyepieces.


Our price: $39.99 (€34.79)
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Meade Model 932 Image Erecting Prism #07210 for ETX-90 and ETX-125
Meade Model 932 Image Erecting Prism #07210. For ETX-90 and ETX-125. Produces a correctly oriented image and convenient 45° observing angle for terrestrial observations.

Our price: $49.99 (€43.49)
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Olivon 2″ 90° Erecting Image Roof Prism Diagonal

NEW!! Olivon 2″ 90° Erecting Image Roof Prism Diagonal with 1.25″ adapter included.


Our price: $199.00 (€173.13)
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Stellarvue 2 Inch 45 Degree Correct Image Prism Diagonal

Stellarvue's new  2" fully multi-coated 45 degree correct image erecting prism will turn your Stellarvue telescope into the  ultimate terrestrial scope. Comes with 1.25" compression ring adapter.  Use this prism with a large 2" wide field eyepiece for porthole visual views of distant objects, birds, etc. You can get an excellent  performance using this 45 degree erecting prism and your Stellarvue Apo refractor.


Our price: $209.00 (€181.83)
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Stellarvue 90-Degree Correct Image Prism with Focuser - 1.25" - D1026AF

This correct image, 90 degree erecting prims has a helical focuser with about 3/4” of travel for fine focusing.  Simple thumb screw lock. Aperture is about 20.9 mm. Fully multi-coated.


Our price: $69.00 (€60.03)
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