JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser.

We use cookies and similar technologies to improve your experience, analyze traffic, and support our marketing efforts. Information may be collected by our analytics and advertising partners. By accepting cookies or continuing to the Site, you consent to cookies and information use under our Cookie Policy & Privacy Policy.

$100 Off Seestar S50 Pro! Ends in →

ZWO Holiday Sale: 10% Off Nearly Everything! → ZWO Holiday Sale: 10% Off Nearly Everything! →

Skip to Content

Shop

Telescopes

Telescopes View All

Popular Telescopes

Popular Telescopes View All

Smart Telescopes

Beginner Telescopes

Astrophotography Telescopes

Refractor Telescopes

Dobsonian Telescopes

Refractor Telescopes

Refractor Telescopes View All

Petzval Telescopes

Triplet Telescopes

Doublet Telescopes

Reflector Telescopes

Reflector Telescopes View All

Dobsonian Telescopes

Newtonian Telescopes

Ritchey-Chretien Telescopes

Cassegrain Telescopes

Catadioptric Telescopes

Catadioptric Telescopes View All

RASA Telescopes

Maksutov Telescopes

More Telescopes

More Telescopes View All

Smart Telescopes

Solar Telescopes

Computerized Telescopes

Astrograph Telescopes

Spotting Telescopes

Telescope Bundles

Kids Telescopes

Astrophotography

Astrophotography View All

Cameras

Cameras View All

Deep Sky Cameras

Planetary Cameras

Mounts

Mounts View All

Harmonic EQ Mounts

Classic GoTo EQ Mounts

Counterweights & Balancing

Filters

Filters View All

Light Pollution Filters

Narrowband Filters

Broadband Filters

Planetary Filters

Specialty Filters

Optical Correctors

Optical Correctors View All

Field Flatteners

Coma Correctors

Barlows & Extenders

Imaging Accessories

Imaging Accessories View All

Smart Controllers

Guide Scopes & OAGs

Autofocusers & Focus Aids

Filter Drawers & Wheels

Camera Rotators

Adapters & Spacers

Collimation Tools

Smartphone Adapters

Mounts

Mounts View All

Equatorial Mounts

Equatorial Mounts View All

Harmonic EQ Mounts

Classic GoTo EQ Mounts

Alt-Azimuth Mounts

Alt-Azimuth Mounts View All

GoTo Alt-Az Mounts

Manual Alt-Az Mounts

Mount Accessories

Mount Accessories View All

Telescope Tripods

Counterweights & Balancing

Dovetail Saddles & Clamps

Polar Scopes & Tools

Equatorial Wedges

Hand Controllers & Electronics

Screws, Knobs, & Hardware

Vibration Suppression

Miscellaneous Mount Accessories

Mounting Hardware & Solutions

Mounting Hardware & Solutions View All

Dovetail Bars/Rails

Dovetail Clamps

Hybrid Mounting Solutions

Solar

Solar Telescopes

Solar Telescopes View All

H-Alpha Telescopes

White Light Telescopes

Solar Filters

Solar Filters View All

Solar Film Sheets

Ready-to-Use Telescope Solar Filters

Other Polymer Film Filters

Camera Lens Solar Filters

Herschel Wedges

H-Alpha Filters

Calcium H & K Filters

Other Specialty Filters

Solar Binoculars

Solar Accessories

Solar Accessories View All

Solar Glasses & Viewers

Eyepieces & Barlows

Miscellaneous Accessories

Accessories

Accessories View All

Telescope Accessories

Telescope Accessories View All

Field Flatteners

Coma Correctors

Barlows & Extenders

Telescope Focusers

Focuser Accessories

Dew Prevention & Control

Finder & Guide Scope Accessories

Diagonals & Prisms

Smart Telescope Accessories

Eyepieces

Eyepieces View All

1.25" Eyepieces

Specialty Eyepieces

Imaging Eyepieces

Adapters

Adapters View All

0.965" Adapters

M54 Threaded Adapters

Baader UFC Adapters

Binocular Adapters

Camera / Imaging Adapters

Dust Covers / Seals

Eyepiece Adapters

Extension Tubes

Gender Changers

SCT Thread Adapters

Spacer Rings / Extenders

T-Thread Adapters

Webcam & Video Adapters

Miscellaneous Adapters

Binoculars & Accessories

Binoculars & Accessories View All

Standard Binoculars (Up to 50mm)

Large Binoculars (56mm-90mm)

Giant Binoculars (100mm & Larger)

Solar Binoculars

Binocular Accessories

More Accessories

More Accessories View All

Lights & Laser Pointers

Maps, Books & Software

Cleaning Supplies

Agena Astro Apparel & Merchandise

Miscellaneous Accessories

Power Adapters, Cables & Batteries

Dust Covers & Seals

Mirrors & Holders

Smart Telescope Accessories

Accessory Packages

Sale

Shop Sales

Shop Sales View All

ZWO Holiday Sale

William Optics Holiday Sale

ZWO Seestar Sale

Celestron Holiday Sale

Sky-Watcher Holiday Sale

Explore Scientific Holiday Sale

Thousand Oaks Dew Heater Sale

ToupTek Summer Sale

Shop Clearance

Shop Clearance View All

Clearance Telescopes

Clearance Astrophotography

Clearance Mounts

Clearance Solar

Clearance Accessories

Brands

Baader Planetarium

AstroSuite ^NEW

Contact Us
Shipping FAQ
Returns & Exchanges
Help Center

Compare Products item items

Sign In Create an Account

Telescopes
Astrophotography
Mounts
Solar
Accessories
Sale
- Shop Sales
  
  ZWO Holiday Sale
  
  William Optics Holiday Sale
  
  ZWO Seestar Sale
  
  Celestron Holiday Sale
  
  Sky-Watcher Holiday Sale
  
  View All
- Shop Clearance
  
  Clearance Telescopes
  
  Clearance Astrophotography
  
  Clearance Mounts
  
  Clearance Solar
  
  Clearance Accessories

AstroSuite ^NEW

Brands

Featured Brands

Over 30k 5-star reviews
Free shipping over $50*
Easy 30-day returns

Shopping Cart

Loading...

Triplet Telescopes

Triplet Telescopes

Filters (6)

new

sale

discontinued - mfg

closeout

special

In Stock

Clear All

Sort by:

FILTER BY

Price

$

to

$

Stock

In Stock (46) items

Out of Stock (5) items

Manufacturer

Airy Disk (2) items

Askar (6) items

Founder Optics (2) items

Lunt Solar Systems (3) items

Nakoh (1) item

Sky Rover (5) items

Sky Watcher (5) items

Starfield Optics (2) items

Takahashi (7) items

William Optics (13) items

Category

Petzval Telescopes Petzval Telescopes (45) items

Triplet Telescopes Triplet Telescopes (46) items

Doublet Telescopes Doublet Telescopes (45) items

Apo Telescopes Apo Telescopes (117) items

Customer Reviews

(19) items

& up (24) items

& up (24) items

Product Banner Type

closeout (3) items

coming-soon (9) items

discontinued - mfg (0) items

new (37) items

sale (0) items

special (6) items

Dovetail Length

4.1" - 6" (1) item

6.1" - 8" (1) item

10.1" - 12" (1) item

12.1 - 14" (1) item

Focuser Scope Type

Refractor (4) items

Dovetail Design/Series

V Series (Vixen) (1) item

D Series (Losmandy) (3) items

Accessory Size

2 inch (1) item

Telescope Aperture

2.1 - 3" [76mm] (3) items

2.1 - 3" [76mm] (2) items

3.1 - 4" [102mm] (18) items

4.1 - 5" [127mm] (9) items

5.1 - 6" [153mm] (9) items

6.1 - 8" [203mm] (5) items

Experience Level

Beginner (4) items

Intermediate (25) items

Advanced (3) items

Telescope Focal Length

301 - 400mm (4) items

401 - 500mm (12) items

501 - 600mm (5) items

601 - 700mm (3) items

701 - 800mm (7) items

801 - 900mm (3) items

901 - 1000mm (6) items

1001 - 1250mm (4) items

1251 - 1500mm (2) items

Telescope Focal Ratio

f/4.1 - f/5 (2) items

f/5.1 - f/6 (16) items

f/6.1 - f/7 (21) items

f/7.1 - f/8 (5) items

Telescope Optical Design

Solar (3) items

Astrograph (1) item

Triplet (Apochromat) (39) items

Telescope Series

Search

Airy Disk Refractors (2) items

Askar APO (6) items

Founder Optics FOT Apo (2) items

Lunt MT (3) items

Nakoh APO Astrograph (1) item

Sky Rover GP S Series (5) items

Sky Watcher Esprit APO (5) items

Starfield Géar (2) items

Takahashi FCT (3) items

Takahashi FS (1) item

Takahashi TOA (2) items

Takahashi TS (1) item

William Optics FLT (5) items

William Optics GT (8) items

Telescope Mount Type

No Mount (OTA Only) (39) items

FILTER BY

Sort by:

On Sale

Nakoh 60GT f/6 Triplet Astrograph Bundle with Free Reducer and Flattener

Special Price $799.00 Regular Price $1,697.00

In Stock
$Askar 103 APO f/6.8 Triplet Refractor Telescope # 103APO$

Askar 103 APO f/6.8 Triplet Refractor Telescope

$1,199.00

In Stock
$Askar 120 APO 120mm f/7 Triplet Refractor Telescope$

Askar 120 APO 120mm f/7 Triplet Refractor Telescope

$1,699.00

In Stock
$Askar 140 APO 140mm f/7 Triplet Refractor Telescope # 140APO$

Askar 140 APO 140mm f/7 Triplet Refractor Telescope

$2,499.00

In Stock
Special
$Williams Optics Fluorostar 156mm f/7.8 Triplet APO Refractor - Free Guidescope$

William Optics Fluorostar 156mm f/7.8 Triplet APO Refractor - Gold

Special Price $7,598.10 Regular Price $7,998.00

Special Order

Special Order
Special
$William Optics New FLT 132 Fluorostar 132mm f/6.9 Triplet Apo Refractor with Carry Case - Free Guidescope$

William Optics New FLT 132 Fluorostar 132mm f/6.9 Triplet Apo Refractor with Carry Case - Sp...

Special Price $4,159.10 Regular Price $4,378.00

In Stock
$Askar 185 APO 185mm f/7 Triplet Refractor Telescope # 185APO$

Askar 185 APO 185mm f/7 Triplet Refractor Telescope

$5,278.90

In Stock
New
$Takahashi FCT-114DF f/7 Triplet APO Fluorite Apochromatic Refractor # TCK11420$

Takahashi FCT-114DF f/7 Triplet APO Fluorite Apochromatic Refractor

$3,680.00

Out of Stock

Back-order
Closeout
$Sky-Watcher Esprit 80mm ED Triplet Apo Refractor OTA # S11400$

Sky-Watcher Esprit 80mm ED Triplet Apo Refractor OTA

Special Price $1,199.99 Regular Price $2,230.00

In Stock
Special
$William Optics New FLT 132 Fluoro Star 132mm f/7 Triplet Apo Refractor with FT Focuser Upgrade & Carry Case - Free Guidescope$

William Optics New FLT 132 Fluorostar 132mm f/6.9 Triplet Apo Refractor with FT Focuser Upgr...

Special Price $5,384.60 Regular Price $5,668.00

In Stock
$Askar 160 APO 160mm f/7 Triplet Refractor Telescope # 160APO$

Askar 160 APO 160mm f/7 Triplet Refractor Telescope

$3,844.50

In Stock
$Askar 203 APO 203mm f/7 Triplet Refractor Telescope$

Askar 203 APO 203mm f/7 Triplet Refractor Telescope

$8,578.90

In Stock
$Sky-Watcher Esprit 150EDX f/7 Super APO Triplet Refractor Telescope # S11455$

Sky-Watcher Esprit 150EDX f/7 Triplet Refractor Telescope

$4,795.00

In Stock
$Sky-Watcher Esprit 120EDX f/7 Super APO Triplet Refractor Telescope # S11445$

Sky-Watcher Esprit 120EDX f/7 Super APO Triplet Refractor Telescope

$3,295.00

In Stock
$Takahashi Telescopes TSA-120 f/7.5 ED Triplet Refractor Telescope OTA # TTK12010$

Takahashi TSA-120 f/7.5 ED Triplet Refractor OTA

$4,450.00

Out of Stock

Back-order
New
$Takahashi FCT-114DS f7 Triplet APO Fluorite Apochromatic Refractor$

Takahashi FCT-114DS f/7 Triplet APO Fluorite Apochromatic Refractor

$3,270.00

Out of Stock

Back-order
$Takahashi Telescopes FCT-65D Fluorite Refractor Telescope OTA # TCK06510$

Takahashi FCT-65D Fluorite Refractor Telescope OTA

$1,480.00

In Stock
Special
$William Optics New FLT 132 Fluorostar 132mm f/6.9 Triplet Apo Refractor with Carry Case - Free Guidescope$

William Optics New FLT 132 Fluorostar 132mm f/6.9 Triplet Apo Refractor with Carry Case - Gold

Special Price $4,159.10 Regular Price $4,378.00

In Stock
$Takahashi Telescopes TOA-130NS f/7.7 Triplet APO Double ED Refractor$

Takahashi TOA-130NS f/7.7 Triplet APO Double ED Refractor - 2.7" Focuser

$6,000.00

In Stock
On Sale
$William Optics WIFD GT81 81mm f/5.9 Apo Refractor Astrophotography Package - Red # T-GT-81RD-WIFD-AP$

William Optics WIFD GT81 81mm f/5.9 Apo Refractor Astrophotography Package - Red

Special Price $1,899.00 Regular Price $2,241.00

In Stock
On Sale
$William Optics WIFD GT81 81mm f/5.9 Apo Refractor Astrophotography Package - Space Gray # T-GT-81SG-WIFD-AP$

William Optics WIFD GT81 81mm f/5.9 Apo Refractor Astrophotography Package - Space Gray

Special Price $1,899.00 Regular Price $2,241.00

In Stock
$Sky-Watcher Esprit 100EDX f/5.5 Super APO Triplet Refractor Telescope # S11435$

Sky-Watcher Esprit 100EDX f/5.5 Triplet Refractor Telescope

$2,095.00

In Stock
$Takahashi Telescopes TOA-130NFB f/7.7 Double ED Triplet Refractor$

Takahashi TOA-130NFB f/7.7 Double ED Triplet Refractor - 4" focuser

$6,760.00

In Stock
On Sale
$William Optics WIFD ZenithStar ZS81 Refractor OTA - Gold$

William Optics WIFD ZenithStar ZS81 81mm f/6.9 Apo Refractor OTA - Gold

Special Price $949.05 Regular Price $999.00

In Stock

Items 1-24 of 46

You're currently reading page 1
Page 2

Show:

24
48
72

Free Shipping

on orders over $50*

Easy Returns

from day of receipt

Live Inventory

for all products

Sign up for Agena Astro emails

Be first to know about sales, new astro gear & events

CONTACT

[email protected]

* Not A Retail Store *

13100 Alondra Blvd, Suite 106
Cerritos, CA 90703, USA

ACCOUNT

Log in
Create Account
Order Status
Order History
Wishlist

SUPPORT

Contact Us
Ordering FAQ
Shipping & Delivery
Returns & Exchanges
International Orders
Coupons & Discounts

RESOURCES

Agena Academy
Affiliate Program
Site Map
Discontinued Products

WHO WE ARE

About Us
Job Openings
Customer Reviews
Media Kit

Copyright © 2003-2026 Agena Astro. All rights reserved.

Terms of Use
Privacy Policy
Cookie Policy

Manage Cookie Preferences