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Home > Diagonals & Erecting Prisms > 2" Lightwave Premium 45 Degree Correct Image Diagonal

2" Lightwave Premium 45 Degree Correct Image Diagonal

2" Lightwave Premium 45 Degree Correct Image Diagonal
Price: £99.00
Incl. VAT 20% ( £16.50 )
Product code: LW-2-45-DIAG
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A premium 2" 45 degree prism based diagonal which lets you use your astronomical telescope as a super high quality terrestrial spotting scope with your favourite large 2" or 1.25" astronomical eyepieces. The prism aperture is 31mm therefore the prism is compatible with eyepieces with field stops up to 31mm in diameter. You can check this by looking at the base of the eyepiece. This is the version with the best coatings our prism manufacturer can offer.

Because of the heavy duty casing, the 2" erect image prism is especially recommended for those using heavy bino-viewers during the day-time.

What does "image erecting" mean? Astronomical telescopes produce an image which is not only upside down, but is reversed left to right. This 45 degree diagonal uses a prism to flip and reverse the image, so you can use your telescope for birding and wildlife viewing during the daytime. What's more, it has a comfortable 45 degree viewing angle just like a spotting scope. Most astronomical telescopes routinely outperform spotting scopes costing up to 3 times the price when using a diagonal like this, and astronomical eyepieces are generally better performers for the price too. This accessory helps you get more value out of your astro-equipment.

- High quality prism with 31mm clear aperture and excellent anti-reflective coatings for a high contrast image
- Precision CNC machined aluminium body with deluxe hard anodising
- 2" standard filter thread in the 2" barrel
- Non-marring brass compression ring on 2" female (eyepiece) side
- 2" to 1.25" adapter also with brass compression ring
- Blackened interior for high contrast
- Includes dust caps for both ends, and a foam filled box

Altair Astro Product Discussion ForumQuestions about Lightwave products?
Where to buy Lightwave products:

UK orders:

  • Tring Astronomy Centre (Showroom Hertfordshire, Advanced Stockist)
  • Green Witch (Showrooms Birstal & Cambridge, Advanced Stockist)
  • Telescope House (Showroom Kent, Advanced Stockist)
  • F1 Telescopes (Showroom Sittingbourne, Stockist)
  • Rother Valley Optics (Showroom, Stockist)
  • Wex Photographic (Showroom Norwich, Stockist)
  • Peak 2 Valley Instruments (Showroom Derbyshire, Stockist)
  • Widescreen Centre (Showroom, Cambridge)
  • Grovers (Showroom, North Yorkshire)
  • Io Astronomy Please note: IO Astronomy voluntarily ceased trading with large unpaid debts affecting the entire UK astronomy industry. You may contact us for problems / issues with Altair or iOptron products ONLY - or try Darkframe Optics / Dave Woods. Unfortunately, we will not be able to support undeclared products bought from the ex-directors after the company ceased trading.

European orders - order on this page or contact our European dealers:

‚ÄčNorth America & Canada orders: 

Products can be ordered online from Altair with tracked insured shipping to anywhere in the world. For large items shipping price may need to be re-quoted.

Availability: If product shows as out of stock, please click on the "Notify me when in stock" button to receive instant notification of availability. Altair Astro and iOptron reserve the right to change the product price and specification without notice. 


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