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Erect Prisms + Diagonals

Observing through your astronomical telescope can be awkward due to the angle of the eyepiece once the telescope is set up. A star diagonal alters the angle of the eyepiece to make observing more comfortable. The majority of telescopes will show an upside down or reversed image to correct this you require an erecting prism. Both star diagonals and erecting prisms are available in either 1.25 inch or 2 inch fittings to match your eyepiece type.
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Celestron Erect Image Diagonal 45 Degree This Celestron Erect Image Diagonal allows you to look into the telescope at a 45 degree angle. Images will be orientated properly so that the image is upright and correct from left to right. Amici prism design. 1.25 inch format. More Information

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£24.00
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OVL Twist Lock Adapter (2 Inch To 1.25 Inch) Low profile helical self centering 2 inch to 1.25 inch eyepiece adapter. Metal construction. Threaded to accept 2 inch filters. Just twist the upper knurled locking ring and your 1.25 inch eyepi..... More Information

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£25.00
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Skywatcher 90 Degree Star Diagonal (1.25 Inch) (20375) This Skywatcher 90 degree star diagonal is suitable for telescopes which use 1.25 inch (31.7mm) eyepieces. A star diagonal is designed to make viewing more comfortable when the telescope is poin..... More Information

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£29.00
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Skywatcher 45 Degree Erecting Prism (20376) This Skywatcher 45 degree erecting prism is suitable for telescopes which use 1.25 inch (31.7mm) eyepieces. An erecting prism corrects the image being viewed which is especially useful when using your telescope for terrestrial viewing. More Information

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£32.00
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Skywatcher 90 Degree Erecting Prism (20377) This Skywatcher 90 degree erecting prism is suitable for telescopes which use 1.25 inch (31.7mm) eyepieces. An erecting prism corrects the image being viewed which is especially useful when using your telescope for terrestrial viewing. More Information

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£33.00
(Inc VAT)

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Skywatcher 90 Degree Star Diagonal (2 Inch) (20570) This Skywatcher 90 degree star diagonal is suitable for telescopes which use 2 inch (50.8mm) eyepieces, plus also comes with a 1.25 inch adapter. A star diagonal is designed to make viewing more..... More Information

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£53.00
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Skywatcher Deluxe Di-Electric Coated Star Diagonal (1.25 Inch) The mirrors inside this star diagonal have undergone a special high reflectivity multi coating process. This allows them to reflect 99% of the precious gathered starlight, providing exceptional ..... More Information

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£66.00
(Inc VAT)

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Skywatcher Deluxe Di-Electric Coated Star Diagonal (2 Inch) The mirrors inside this star diagonal have undergone a special high reflectivity multi coating process. This allows them to reflect 99% of the precious gathered starlight, providing exceptional ..... More Information

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£96.00
(Inc VAT)

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