Telescope Diagonals & Prisms

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Tele Vue Everbrite 90° Star Diagonal Reducer Kit (2")

Tele Vue Everbrite 90° Star Diagonal Reducer Kit (2")

B&H # TEDDP8004 MFR # DDP-8004

Key Features

  • 2" Barrel and Eyepiece Holder
  • 99% Reflective Everbrite Mirror Coatings
  • Broadband Reflectivity for Natural Color
  • Pyrex Optical Glass Mirror
$32000
6 Mos. Promo Financing*
In Stock
Celestron 90° Dielectric Star Diagonal with Twist-Lock (1.25")

Celestron 90° Dielectric Star Diagonal with Twist-Lock (1.25")

B&H # CEDSDTL125 MFR # 93571

Key Features

  • 1.25" Nose Piece and Holder
  • BK7 Glass, Diffraction-Limited Optics
  • 58-Layer Dielectric Coatings
  • Over 99% Reflective Mirror Surfaces
$12995
In Stock

Tele Vue 90-Degree Everbrite Mirror Diagonal (1.25")

B&H # TE190E MFR # DPC-1250

Key Features

  • Upright, Laterally-Reversed Images
$19000
6 Mos. Promo Financing*
In Stock

Vixen Optics Flip Mirror System

B&H # VIFM MFR # 2680

Key Features

  • Inserts in 2" Focusers
  • Accepts 1.25" Eyepieces
  • Accepts T-Mounts
$12900
In Stock

Celestron 45-Degree Erect Diagonal (1.25")

B&H # CEDEI451.25 MFR # 94112-A

Key Features

  • Upright & Laterally-Correct Observing
$4595
In Stock

Celestron 90-Degree Mirror Diagonal (2") for SCT Scopes

B&H # CEDM2S MFR # 93527

Key Features

  • Upright, Laterally-Reversed Images
  • Fits Catadioptric 2"-18 Rear Threads
  • Starbright XLT Coatings
$16995
6 Mos. Promo Financing*
In Stock

Celestron 90° Dielectric Star Diagonal with Twist-Lock (2")

B&H # CEDSDTL2 MFR # 93573

Key Features

  • 2" Eyepiece Holder with 1.25" Reducer
  • Adapter for Connection to SCT Backs
  • BK7 Glass, Diffraction-Limited Optics
  • 58-Layer Dielectric Coatings
$20995
6 Mos. Promo Financing*
In Stock

Celestron 90° Star Diagonal (1.25")

B&H # CEDS1.25 MFR # 94115-A

Key Features

  • 90° Angle
  • Upright & Laterally-Reversed Observing
$4579
In Stock

Explore Scientific 2" ES Star Diagonal

B&H # EXDD0200CF MFR # DD02-00CF

Key Features

  • 2" Diameter Barrel
  • 1.25" Eyepiece Adapter
  • Dielectric-Coated Mirror
  • 99% Reflective Surface Mirror
$19999
6 Mos. Promo Financing*
In Stock

Alpine Astronomical Baader ClickLock Mirror Star Diagonal (2")

B&H # ALCLDIAG2 MFR # CLDIAG-2

Key Features

  • 2" Nosepiece & ClickLock Eyepiece Clamp
  • Dielectric-Coated Mirror
  • 99% Reflective Surface Mirror
  • Thermally Stable - Resists Heat
$30900
6 Mos. Promo Financing*
In Stock

Tele Vue Everbrite 90° Star Diagonal Schmidt-Cassegrain Kit (2")

B&H # TESCP8202 MFR # SCP-8202

Key Features

  • 2" Barrel and Eyepiece Holder
  • 99% Reflective Everbrite Mirror Coatings
  • Broadband Reflectivity for Natural Color
  • Pyrex Optical Glass Mirror
$37100
6 Mos. Promo Financing*
In Stock

iOptron 90° Dielectric Star Diagonal (1.25")

B&H # IO6231 MFR # 6231

Key Features

  • Ideal for Refractor or Catadioptric OTAs
  • 1.25" Diameter Barrel
  • Dielectric-Coated BK-7 Glass Mirror
  • 99% Reflective Surface Mirror
$7900
In Stock

Tele Vue 1.25" 60° Everbrite Star Diagonal

B&H # TE160E MFR # DPC-6012

Key Features

  • Comfortable 60° Viewing Angle
  • 1.25" Barrel and Eyepiece Holder
  • Corrects Image Vertically Only
$24500
6 Mos. Promo Financing*
Special Order
Expected availability: 2-4 weeks

Alpine Astronomical Baader FlipMirror II Star Diagonal

B&H # ALBFMII MFR # BFM-II

Key Features

  • Essential for Accurate Astrophotography
  • Three Ports for Cameras & Accessories
  • Multi-Layer Aluminum-Coated Flip Mirror
  • Precise Adjustments for All Light Paths
$24700
6 Mos. Promo Financing*
In Stock

Alpine Astronomical Baader 2" 90° Amici Erecting Diagonal

B&H # ALAMICI2 MFR # AMICI-2

Key Features

  • 2" Holder and Nosepiece
  • 1.25" Eyepiece Reducer Adapter
  • 7-Layer Anti-Reflection Multi-Coatings
  • Large 38mm Clear Aperture
$29900
6 Mos. Promo Financing*
Special Order
Expected availability: 2-4 weeks

iOptron 45° Erect-Image Diagonal (1.25")

B&H # IOTDE100 MFR # TDE100

Key Features

  • 1.25" Barrel Diameter
  • Corrects Image for Terrestrial Viewing
$2500
Special Order
Expected availability: 2-4 weeks

Alpine Astronomical Baader 1.25" 45° Amici Erecting Diagonal

B&H # ALAMICI45 MFR # AMICI-45

Key Features

  • 1.25" Holder and Nosepiece
  • Anti-Reflection Multi-Coatings
  • Large 24mm Clear Aperture
  • Standard 1.25" Eyepiece Filter Threads
$9200
Special Order
Expected availability: 2-4 weeks

Snypex 45-degree Erect Image Roof Prism for the Knight PT Digiscope

B&H # SN45EIRP MFR # SNY PT72-45AA

Key Features

  • For the Knight PT 72mm-ED-APO Digiscope
  • Accepts 1.25" Eyepieces and Accessories
$9999
Special Order
Expected availability: 2-4 weeks

Lumicon 90-Degree Enhanced Mirror Diagonal (1.25")

B&H # LU125ED MFR # LD1010

Key Features

  • Upright, Laterally-Reversed Images
$10000
Special Order
Expected availability: 2-4 weeks

iOptron 90° Dielectric Star Diagonal (2")

B&H # IO6232 MFR # 6232

Key Features

  • Ideal for Refractor or Catadioptric OTAs
  • Large 2" Diameter Barrel
  • 1.25" Reducer Adapter Included
  • Dielectric-Coated BK-7 Glass Mirror
$11000
Special Order
Expected availability: 7-14 business days

Alpine Astronomical Baader 45° Erecting Amici Prism for Maxbright Binoviewer (1.25")

B&H # ALMAXAMICI MFR # MAXAMICI

Key Features

  • Corrects View for Terrestrial Use
  • Anti-Reflection Multi-Coated Optics
  • Total Reflection Prism Coatings
  • Integrated 2x Glasspath Corrector
$11500
Special Order
Expected availability: 2-4 weeks

Alpine Astronomical Baader T-2 90° Prism Star Diagonal Housing

B&H # ALT201C MFR # T2-01C

Key Features

  • Part of the Astro T-2 Modular System
  • 32mm Clear Mirror Aperture
  • T2 Male and T2 Female Threads
  • Highly Reflective Mirror Coatings
$12900
Special Order
Expected availability: 2-4 weeks

Lumicon 90-Degree LumiBrite Mirror Diagonal (1.25")

B&H # LU125LD MFR # LD1020

Key Features

  • Upright, Laterally-Reversed Images
$13000
Special Order
Expected availability: 2-4 weeks

Tele Vue 90° Enhanced Aluminum Star Diagonal (1.25")

B&H # TE190D MFR # DSC-0125

Key Features

  • 1.25" Diameter Barrel
  • 96% Reflective Mirror Surface
  • Top-Layer Protective Mirror Coating
  • Non-Marking Brass Clamp Ring
$14000
Special Order
Expected availability: 2-4 weeks

Vixen Optics Straight Viewing Erect Image Adapter (1.25")

B&H # VIEIA MFR # 3847

Key Features

  • Upright, Laterally Correct Images
$14900
6 Mos. Promo Financing*
Special Order
Expected availability: 2-4 weeks

Alpine Astronomical Baader Zenith Prism Star Diagonal (1.25")

B&H # ALPRISM1 MFR # PRISM-1

Key Features

  • Baader Deluxe 1.25"/T-2 Eyepiece Holder
  • Tight Fit for Accurate Optical Alignment
  • Bronze Compression Ring, 3 Set Screws
  • Locking Micro-Focusing Mechanism
$16900
6 Mos. Promo Financing*
Back-Ordered

Lumicon 90-Degree Enhanced Mirror Diagonal (2")

B&H # LU2ED MFR # LD1015

Key Features

  • Upright, Laterally-Reversed Images
$19000
6 Mos. Promo Financing*
Special Order
Expected availability: 2-4 weeks

Alpine Astronomical Baader 2" 45° Amici Erecting Diagonal

B&H # ALAMICI452 MFR # AMICI-45-2

Key Features

  • 2" Holder and SCT Mount Threads
  • 1.25" Eyepiece Reducer Adapter
  • Anti-Reflection Multi-Coatings
  • Not Recommended for High Magnifications
$23900
6 Mos. Promo Financing*
Special Order
Expected availability: 2-4 weeks

Lumicon 90-Degree LumiBrite Mirror Diagonal (2")

B&H # LU2LD MFR # LD1025

Key Features

  • Upright, Laterally-Reversed Images
$24000
6 Mos. Promo Financing*
Special Order
Expected availability: 2-4 weeks

Alpine Astronomical Baader T-2 Maxbright Sitall Mirror Star Diagonal (1.25")

B&H # ALMAX1 MFR # MAX-1

Key Features

  • Part of the T-2 Astro Modular System
  • Accepts 1.25" T-2 Accessories
  • Dielectrically Coated, 99% Reflective
  • High Thermal Stability Mirror
$24900
6 Mos. Promo Financing*
Special Order
Expected availability: 2-4 weeks

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