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Diagonals & Erecting Prisms

Diagonals let you to view the sky through a telescope from a comfortable position. Astro telescopes show an upside down reversed images. This is fine for astronomy, but not for daytime terrestrial viewing. Erecting prisms correctly orientate the image for daytime viewing.

1.25" Lightwave Premium Dielectric Diagonal
£69.99
Incl. VAT 20.00 % ( £11.67 )
A premium dielectric coated diagonal which is small and compact with very high quality machining and a super-hard black anodised chassis and silver sides....
1.25" Lightwave Premium Dielectric Diagonal (RED)
£69.99
Incl. VAT 20.00 % ( £11.67 )
A premium dielectric coated diagonal which is small and compact with very high quality machining and a super-hard black anodised chassis and red anodised ...
1.25" Lightwave Premium 45 Degree Correct Image Diagonal
£49.99
Incl. VAT 20.00 % ( £8.33 )
A premium 45 degree prism based diagonal which lets you use your astronomical telescope as a super high quality terrestrial spotting scope with your favou...
Altair 2" Star Diagonal Mirror for refractor telescopes - with bras...
£49.99
Incl. VAT 20.00 % ( £8.33 )
Altair 2" star diagonal mirror with a 90° viewing angle allows you to comfortably view objects at a high angle in the sky, producing an uprig...
Altair 2" Star Diagonal Mirror for SCT telescopes - with brass comp...
£49.99
Incl. VAT 20.00 % ( £8.33 )
Altair 2" star diagonal mirror with a 90° viewing angle allows you to comfortably view objects at a high angle in the sky, producing an uprig...
2" Lightwave Premium Dielectric Diagonal Push-fit for Refractors
£99.99
Incl. VAT 20.00 % ( £16.67 )
A premium dielectric-coated star-diagonal with a high quality CNC machined chassis to hold extra heavy eyepieces.  Ideal for refractors and l...
2" Lightwave Premium Dielectric SCT Diagonal for Celestron Meade
£99.99
Incl. VAT 20.00 % ( £16.67 )
A premium dielectric-coated star-diagonal with a high quality CNC machined chassis to hold extra heavy eyepieces.  Fits Schmidt Cassegrain te...
Altair 2" Positive Lock 90 Degree Prism Diagonal (Push-fit for Refr...
£125.00
Incl. VAT 20.00 % ( £20.83 )
Prism diagonals give less scatter and therefore better contrast than diagonals using reflective mirror surfaces, including dielectric ones. Prism diag...
Altair Premium Diagonal - Dielectric 2" SCT Fit
£99.00
Incl. VAT 20.00 % ( £16.50 )
The Altair 2" premium diagonal has a CNC machined chassis to hold extra heavy accessories without flexing, a 2" push-fit adapter with non-marrin...
Altair Premium Positive-Lock Diagonal - Dielectric 2" Pushfit
£119.00
Incl. VAT 20.00 % ( £19.83 )
The Altair 2" premium diagonal with positive-lock system grips 2" accessories tightly with a small rotation of the top knurled ring, keeping the...
 
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