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Diagonals

Star diagonals and erecting prisms for refractors, Cassegrains and Maksutovs — 1.25", 2" and SCT-thread fittings, in dielectric, mirror and prism forms. Goods ship factory-sealed. Not sure which fitting your focuser or visual back takes? Ask us before you order and we'll confirm it.

20 products

Showing 1 - 20 of 20 products

Showing 1 - 20 of 20 products
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Explore Scientific 3-inch 99% dielectric star diagonal with 2-inch adapter3-inch dielectric star diagonal showing compression ring eyepiece holder
Explore Scientific Explore Scientific 3-inch 99% Dielectric Star Diagonal with 2-inch Adapter
$817.95 CAD
Baader 2" BBHS Prism Star Diagonal Prism with 2" ClickLock ClampBaader 2" BBHS Prism Star Diagonal Prism with 2" ClickLock Clamp
Baader Planetarium Baader 2" BBHS Prism Star Diagonal Prism with 2" ClickLock Clamp
$739.99 CAD
Takahashi TKA00543 2 inch mirror diagonal with 1.25 inch adapterTakahashi TKA00543 2 inch mirror diagonal product photo
Takahashi Takahashi 2" Mirror Diagonal with 1.25" Adapter
$704.00 CAD
Baader 2" BBHS Mirror Diagonal with 2" ClickLock ClampBaader 2" BBHS Mirror Diagonal with 2" ClickLock Clamp
Baader Planetarium Baader 2" BBHS Mirror Diagonal with 2" ClickLock Clamp
$639.99 CAD
Precision Amici Diagonal
Baader Planetarium Precision Amici Diagonal
$469.99 CAD
Clicklock 2" Diagonal
Baader Planetarium Clicklock 2" Diagonal
$409.49 CAD
Baader FlipMirror II Star DiagonalBaader FlipMirror II Star Diagonal
Baader Planetarium Baader FlipMirror II Star Diagonal
$314.99 CAD
Explore Scientific 2" DiagonalExplore Scientific 2" Diagonal
Explore Scientific Explore Scientific 99% Reflective 2-Inch Dielectric Star Diagonal
$304.95 CAD
Takahashi 1.25 inch multicoated prism star diagonal for refractor, Schmidt-Cassegrain and Maksutov visual observingTakahashi 1.25 inch prism star diagonal showing eyepiece-side compression ring
Takahashi Takahashi 1.25" Multicoated Prism Star Diagonal
$165.00 CAD
William Optics 1.25 inch 45 Deg. Erecting PrismWilliam Optics 1.25 inch 45 Deg. Erecting Prism
William Optics William Optics 1.25 inch 45 Deg. Erecting Prism
$152.00 CAD
2"PRISM - 45 DEGREE, SCT threads
Antares 2"PRISM - 45 DEGREE, SCT threads
$142.56 CAD
2" Mirror Diagonal with Twist Lock for SCT
Antares 2" Mirror Diagonal with Twist Lock for SCT
$130.00 CAD
2" Mirror Diagonal with 2" Twist Lock
Antares 2" Mirror Diagonal with 2" Twist Lock
$130.00 CAD
2" Mirror Diagonal with pressure band for SCT
Antares 2" Mirror Diagonal with pressure band for SCT
$130.00 CAD
2" Mirror Diagonal with pressure band
Antares 2" Mirror Diagonal with pressure band
$130.00 CAD
1.25" Diagonal with Twist Lock. 99% Reflective
Antares 1.25" Diagonal with Twist Lock. 99% Reflective
$106.92 CAD
Takahashi TKA00111 1.25 inch adapter for 2 inch diagonalTakahashi TKA00111 diagonal adapter product photo
Takahashi Takahashi 1.25" Adapter for 2" Diagonal
$77.00 CAD
Antares 90 degree Correct-Image Star Diagonal (1.25")
Antares Antares 90 degree Correct-Image Star Diagonal (1.25")
$47.52 CAD
1.25 Diagonal
Antares 1.25 Diagonal
$41.58 CAD
Antares 1.4" 45 degree Elliptical diagonal
Ontario Telescope and Accessories Antares 1.4" 45 degree Elliptical diagonal
$38.00 CAD