Baader Precision Amici Star Diagonal

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Baader Precision Amici Star Diagonal
$299.00
Item # BA-AMICI
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  • The Baader Precision Amici Star Diagonal is made to exacting specifications - providing image quality that doesn't suffers from defects common to other correct image amici diagonals.
  • The finest 7-Layer Multi-Coatings on this 90 Deluxe AstroGrade prism ensures the image is bright and contrasty, and the oversized prism provides the full clear aperture of 1.25!
  • The precision machined aluminum housing of the Baader Precision Amici Star Diagonal provides a stress free mounting and precise location for the prism, unlike the typical weak plastic or crudely cast and machined housings found on lesser diagonals.
  • Perfect for matching astronomical charts or sketching correctly oriented planetary detail.
  • The Baader Precision Amici Star Diagonal also functions well with the Baader Maxbright BinoViewer and Baader/Zeiss Mark V BinoViewer, to provide correctly oriented binoviewing.
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Baader Precision Amici Star Diagonal

The Amici Prism has long been favored as the best choice for producing correctly oriented images in refractors and cassegrain type telescopes. However, the production of an amici prism is complex and requires a much higher level of quality than a standard mirror or right angle prism diagonal. Prism faces must be polished smooth, flat, and very accurately located at the proper positions and angles. The sharp roof edge must be made vanishingly fine. These demands on prism quality are the prime reason why even expensive amici prism diagonals have developed a deserved reputation for poor image quality. Even the so-called premium quality amici prisms typically produce astigmatic or asymetrical images and display a bright prominent central diffraction spike (the roof edge diffraction spike in the Baader Amici is extremely faint). Also, making matters worse, undersized prisms are used to save cost and large housings give the false illusion of a large clear aperture (as is the case with most so-called 2" amici star diagonals available today).

Baader Planetarium produces what we think is easily the finest amici prism star diagonal available today. The prism has been made to the proper specifications, in order to provide image quality that suffers from none of the defects found in commonly available correct image amici diagonals. The finest 7-Layer Multi-Coatings ensure the image is bright and contrasty, and the oversized prism provides the full clear aperture of 1.25”! The precision machined aluminum housing provides a stress free mounting and precise location for the prism, unlike the typical weak plastic or crudely cast and machined housings found on lesser diagonals. The end result is a correct image diagonal that is good enough for more than just high-quality terrestrial viewing.

Correct image diagonals have been used traditionally for terrestrial viewing, and limited to low (under 100X) magnifications. The high quality of our diagonal lets you use much higher magnifications without aberrations or image breakdown for both astronomical and terrestrial uses. The diagonal is perfect for matching astronomical charts or sketching correctly oriented planetary detail. It also functions well with the Baader Maxbright BinoViewer and Baader/Zeiss Mark V BinoViewer, to provide correctly oriented binoviewing. Many users have commented to us on how wonderful it is to enjoy correct-image views of all planetary and deep sky objects, and that they would not go back to traditional star diagonals. Finally, views that match star and lunar charts!

One of Baader's customers (a professional optical engineer) turned to them when he needed a high quality correct-image diagonal. This same customer had first tried a competitive (so-called 2") amici star diagonal and had found it useless due to its poor image quality. He was thrilled with the quality of the Baader Amici, and sent his detailed comments and Interferograms from his WYKO digital interferometer. Please see "Additional Images" for these results!

Customer Note: The Baader Amici Star Diagonal incorporates standard T-2 threads at the input and output faces, and is provided as a basic component, without any input or output fittings. This permits the diagonal to be used as a compatible component along with the other Baader Planetarium T-2 accessories, like the Baader Maxbright Binocular Viewer. This also enables you to configure the diagonal to exactly suit your needs, and to fit 2" or 1¼” eyepieces, and focusers.

Baader Planetarium Product Number: AMICI
Additional Information

Additional Information

SKU BA-AMICI
Diagonal Type Star Diagonal
Diagonal Size 2"
Manufacturer Baader
Warranty 1 Year Warranty
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  • Baader Precision Amici Star Diagonal
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