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HomeOpticsTelescopesEyepieces & AccessoriesTelescope Eyepiece-Side Adapters

Telescope Eyepiece-Side Adapters

29 Items
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Tele Vue 3.5" Extension Tube for 2" Focusers

Tele Vue 3.5" Extension Tube for 2" Focusers

B&H # TE3ET MFR # X3C-0009
7 Reviews
Key Features
  • Made in the USA
$6800
In Stock
Free Expedited Shipping
Tele Vue 2" Extension Tube for 2" Focusers

Tele Vue 2" Extension Tube for 2" Focusers

B&H # TE2ET MFR # X2C-0008
3 Reviews
Key Features
  • Made in the USA
$6800
In Stock
Free Expedited Shipping

Vixen Optics EA 36.4mm to 31.7mm (1.25") Adapter

B&H # VIEA125 MFR # ES3720
9 Reviews
Key Features
  • Male 36.4mm Threading On Front
  • 1.25" Push-Fit Barrel On Rear
$1699
In Stock
Free Shipping for this Item

Tele Vue 2" to 1.25" Flat Top Adapter

B&H # TEFTA MFR # ACF-2125
1 Review
$5300
In Stock
Free Expedited Shipping

Tele Vue Questar Adapter

B&H # TEQA MFR # AQE-0005
5 Reviews
$8600
In Stock
Free Expedited Shipping

Vixen Optics 45mm DC Ring

B&H # VIR4536.4 MFR # ES2953
Key Features
  • For the R200SS Telescope
$1399
Special Order
Expected availability: 7-14 Business Days
Free Shipping for this Item

Vixen Optics 55mm DC Ring

B&H # VIR5543 MFR # ES2952
Key Features
  • For ED Series Refractors
$1499
Special Order
Expected availability: 7-14 Business Days
Free Shipping for this Item

Vixen Optics 64mm DC Ring

B&H # VIR6453 MFR # ES2951
Key Features
  • For ED Series Refractors
$1699
Special Order
Expected availability: 7-14 Business Days
Shipping Charges Apply

Vixen Optics 42mm to 31.7mm (1.25") Eyepiece Adapter

B&H # VIEA317 MFR # ES2689
Key Features
  • Adapt 1.25" Eyepiece to 42mm Focus Tube
  • 55mm Light Path
$2599
Special Order
Expected availability: 7-14 Business Days
Free Shipping for this Item

Vixen Optics 60mm to 50.8mm (2") SX Eyepiece Adapter

B&H # VIEA508 MFR # ES37293
Key Features
  • Adapt 2" Eyepiece to 60mm Focus Tube
  • 10mm Light Path
$2799
Special Order
Expected availability: 7-14 Business Days
Shipping Charges Apply

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

B&H # ALT228 MFR # T2-28
Key Features
  • Part of the T-2 Astro Modular System
  • Converts 2" Female to T-2 Female Mount
$3000
In Stock

Vixen Optics VC Extension Tube - 66mm Extension for 60mm Drawtubes

B&H # VIET60D MFR # ES2956
1 Review
Key Features
  • Adds Path Length for Prime Focus Imaging
  • For Use w/ Direct Wide Photo Adapter
$3399
Special Order
Expected availability: 7-14 Business Days
Free Shipping for this Item

Vixen Optics 2" Eyepiece Adapter for 60mm Drawtubes

B&H # VIEA2 MFR # ES3725
$3499
Special Order
Expected availability: 7-14 Business Days
Free Shipping for this Item

Celestron Visual Back (1.25")

B&H # CEVB MFR # 93653-A
4 Reviews
$3662
Temporarily Out of Stock
Free Shipping for this Item
Used for$26.95

Vixen Optics Eyepiece Adapter (1.25" to 2")

B&H # VIEAT50.8 MFR # ES37292
2 Reviews
Key Features
  • Adapts Flip Mirrors for 2" Eyepieces
  • Requires No Permanent Modifications
$4299
Special Order
Expected availability: 7-14 Business Days
Shipping Charges Apply

Alpine Astronomical Baader 1.25" to 0.965" Reducer Adapter

B&H # 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
Available in other Styles, Configurations & Kits
$4800
Special Order
Expected availability: 2-4 Weeks
Shipping Charges Apply

Alpine Astronomical Baader 2" to 1.25" Reducer Adapter

B&H # 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
$5200
Special Order
Expected availability: 2-4 Weeks
Free Standard Shipping

Tele Vue 2 to 1.25" In-Travel Adapter

B&H # 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
$5300
In Stock
Free Expedited Shipping

Alpine Astronomical Baader 2" to 1.25" Pushfix Reducer Adapter

B&H # ALT215A MFR # T2-15A
Key Features
  • Use Smaller Eyepieces in 2" Holders
  • Thumbscrew with Brass Compression Ring
  • Three Ways to Use the Adapter
$5400
In Stock
Free Expedited Shipping

Tele Vue Schmidt-Cassegrain Adapter - Long

B&H # TESCTAL MFR # ACC-0003
2 Reviews
Key Features
  • 2" Female SCT Thread Front
  • 2" Inner Diameter Barrel Rear
$6000
In Stock
Free Expedited Shipping

Tele Vue Satin 2" to 1.25" Adapter

B&H # TEAS MFR # ASF-8125
1 Review
Key Features
  • Reduces 2" Focuser to 1.25"
$6800
Special Order
Expected availability: 2-4 Weeks
Free Standard Shipping

Tele Vue 2" to 1.25" Equalizer Adapter

B&H # TEEA MFR # BEC-0005
2 Reviews
$7500
In Stock
Free Expedited Shipping

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

B&H # ALT217F MFR # T2-17F
Key Features
  • Fits Most SCT Visual Back Threads
  • 2" Eyepiece/Accessory Holder
  • Integrated Rear Filter Holder
$7900
Special Order
Expected availability: 2-4 Weeks
Free Standard Shipping

Alpine Astronomical Baader 2" to 1.25" ClickLock Reducer Adapter

B&H # ALT215B MFR # T2-15B
3 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
Available in other Styles, Configurations & Kits
$8700
Temporarily Out of Stock
Free Expedited Shipping

Explore Scientific 2" Adapter for 3" Corrector/Reducer

B&H # EX510364 MFR # 510364
Key Features
  • Threads Directly onto Corrector/Reducer
  • Powder-Coated Aluminum
$8999
Special Order
Expected availability: 2-4 Weeks
Free Standard Shipping

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

B&H # 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
$9700
Temporarily Out of Stock
Free Expedited Shipping

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

B&H # ALCLM54E MFR # CL-M54E
$11000
In Stock
Free Expedited Shipping

Alpine Astronomical Baader 1.25" to 2" ClickLock Expansion Adapter

B&H # 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
$11200
Temporarily Out of Stock
Free Expedited Shipping