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HomeOpticsTelescopesEyepieces & AccessoriesTelescope Eyepiece-Side Adapters

Telescope Eyepiece-Side Adapters

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Tele Vue 3.5" Extension Tube for 2" Focusers
Top Seller

Tele Vue 3.5" Extension Tube for 2" Focusers

BH # TE3ET MFR # X3C-0009
7 Reviews
Key Features
  • Made in the USA
See All Details
$7800
In Stock
No Store Display
Free 2-Day Shipping
Tele Vue 2 to 1.25" In-Travel Adapter

Tele Vue 2 to 1.25" In-Travel Adapter

BH # TEAIT2125 MFR # AIT-2125
Key Features
  • Designed for Delos 17.3 / 14mm Eyepieces
  • Fits Any 1.25" Eyepiece and 2" Focuser
  • Extra-Low Profile for More In-Travel
  • Gloss Black Anodized Aluminum
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$6200
In Stock
No Store Display
Free 2-Day Shipping
Top Seller

Tele Vue 2" Extension Tube for 2" Focusers

BH # TE2ET MFR # X2C-0008
3 Reviews
Key Features
  • Made in the USA
See All Details
$7800
In Stock
No Store Display
Free 2-Day Shipping

Tele Vue Questar Adapter

BH # TEQA MFR # AQE-0005
7 Reviews
See All Details
$9900
In Stock
No Store Display
Free 2-Day Shipping

Tele Vue 2" to 1.25" Equalizer Adapter

BH # TEEA MFR # BEC-0005
3 Reviews
See All Details
$8800
In Stock
No Store Display
Free 2-Day Shipping

Alpine Astronomical Baader 1.25"/T-2 Click-Lock Eyepiece Holder Adapter

BH # ALT208 MFR # T2-08
1 Review
Key Features
  • 1.25" Eyepiece Holder
  • 3-Point Clamp for Accurate Centering
  • 6.5mm Micro-Focusing/Adjustment Travel
  • Replaces Stock Compression Holders
See All Details
$10900
In Stock
No Store Display
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Celestron Visual Back (1.25")

BH # CEVB MFR # 93653-A
4 Reviews
See All Details
$3662
In Stock
No Store Display
Free Shipping for this Item

Alpine Astronomical Baader 2" Male to T-2 Female Reducer Ring

BH # ALT228 MFR # T2-28
Key Features
  • Part of the T-2 Astro Modular System
  • Converts 2" Female to T-2 Female Mount
See All Details
$3900
In Stock
No Store Display

Vixen Optics Eyepiece Adapter (1.25" to 2")

BH # VIEAT50.8 MFR # ES37292
2 Reviews
Key Features
  • Adapts Flip Mirrors for 2" Eyepieces
  • Requires No Permanent Modifications
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$4299
In Stock
No Store Display

Tele Vue 2" to 1.25" Flat Top Adapter

BH # TEFTA MFR # ACF-2125
2 Reviews
See All Details
$6200
In Stock
No Store Display
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Alpine Astronomical Baader 1.25" to 0.965" Reducer Adapter

BH # ALT210 MFR # T2-10
Key Features
  • Part of the Astro T-2 Modular System
  • Use Smaller Eyepieces and Accessories
  • Fits Focusers, Barlows, and Diagonals
  • 1.25" Filter Threads
See All Details
Available in other Styles, Configurations & Kits
$6200
In Stock
No Store Display
Free 2-Day Shipping

Alpine Astronomical Baader 2" to 1.25" Reducer Adapter

BH # ALT215 MFR # T2-15
Key Features
  • Part of the Astro T-2 Modular System
  • Use Smaller Eyepieces and Accessories
  • Fits Focusers, Barlows, and Diagonals
  • Standard T-2 Male Threads
Available in other Styles, Configurations & Kits
$6700
In Stock
No Store Display
Free 2-Day Shipping

Tele Vue Schmidt-Cassegrain Adapter - Long

BH # TESCTAL MFR # ACC-0003
2 Reviews
Key Features
  • 2" Female SCT Thread Front
  • 2" Inner Diameter Barrel Rear
See All Details
$6900
In Stock
No Store Display
Free 2-Day Shipping

Alpine Astronomical Baader 2" to 1.25" Pushfix Reducer Adapter

BH # ALT215A MFR # T2-15A
Key Features
  • Use Smaller Eyepieces in 2" Holders
  • Thumbscrew with Brass Compression Ring
  • Three Ways to Use the Adapter
See All Details
$7000
Special Order
Expected availability: 2-4 Weeks
No Store Display
Free Standard Shipping

Tele Vue Satin 2" to 1.25" Adapter

BH # TEAS MFR # ASF-8125
1 Review
Key Features
  • Reduces 2" Focuser to 1.25"
See All Details
$7800
In Stock
No Store Display
Free 2-Day Shipping

Explore Scientific 2" Adapter for 3" Corrector/Reducer

BH # EX510364 MFR # 510364
Key Features
  • Threads Directly onto Corrector/Reducer
  • Powder-Coated Aluminum
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$8999
Special Order
Expected availability: 2-4 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader 2" to 1.25" ClickLock Reducer Adapter

BH # ALT215B MFR # T2-15B
4 Reviews
Key Features
  • Use Smaller Eyepieces in 2" Holders
  • 3-Point Clamp for Accurate Centering
  • Ideal for Imagers and Visual Use
  • Female T-2 Threads
See All Details
Available in other Styles, Configurations & Kits
$9800
Temporarily Out of Stock
Expected availability: Jun 10, 2026
No Store Display
Free 2-Day Shipping

Alpine Astronomical Baader 2" Deluxe SCT Visual Back with Filter Holder

BH # ALT217F MFR # T2-17F
Key Features
  • Fits Most SCT Visual Back Threads
  • 2" Eyepiece/Accessory Holder
  • Integrated Rear Filter Holder
See All Details
$10200
Special Order
Expected availability: 2-4 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader 2" ClickLock M54e x 0.75 Clamp for TS-Optics/Skywatcher

BH # ALCLM54E MFR # CL-M54E
See All Details
$12400
In Stock
No Store Display
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Alpine Astronomical Baader 1.25" to 2" ClickLock Expansion Adapter

BH # ALCLEXA2 MFR # CLEXA-2
1 Review
Key Features
  • Use Larger 2" Eyepieces in 1.25" Holders
  • 2" ClickLock Holder / 1.25" Nosepiece
  • 3-Point Clamp for Accurate Centering
  • Locks/Releases with a Simple Twist
Available in other Styles, Configurations & Kits
$12600
In Stock
No Store Display
Free 2-Day Shipping
Whatever You Need, We've Got It