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Orion Telescopes
Orion Deluxe 100mm f/6.0 Refractor Guide Scope
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  • 100mm (3.9") aperture, 600mm focal length refractor telescope optical tube gobbles up photons for pleasing wide-field performance
  • Perfect for use as a dedicated guide scope - easily resolves even faint guide stars
  • Deluxe 2" dual-speed Crayford focuser with linear track bearing for backlash-free precision focus, even with heavy guiding accessories attached
  • Lightweight f/6.0 refractor telescope tube weighs just 7.1 pounds, conveniently portable and easily added to an astrophotography setup
  • High quality rugged construction throughout

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Item #  07338

The Orion Deluxe 100mm f/6.0 refractor OTA is a rugged achromat loaded with luxurious features, making it an excellent telescope for a wide variety of uses. The 100mm aperture optical tube is a light-gathering workhorse capable of providing pleasingly bright nighttime views of celestial objects. The Deluxe 100mm f/6.0 refractor could also be used as a first-rate guide scope for guided astrophotography pursuits with its significant 3.9-inch aperture and moderate focal length of 600mm. This telescope is ideal for targeting faint guide stars, which can be difficult to acquire in smaller aperture instruments.

The Deluxe 100mm OTA is outfitted with great features any visual or imaging enthusiast will appreciate. Fast f/6.0 optics provide detail-rich views with sharp clarity and resolution, especially on wide-field deep-sky objects or star fields. An extendable dew shield provides protection from unwanted peripheral glare and helps prevent dew buildup on the multi-coated objective lens. The extendable dew shield provides ample room for the attachment of tube rings or guide scope rings and the telescope optical tube features an integrated 1/4"-20 threaded mounting block for easy and convenient attachment to field tripods equipped with a 1/4"-20 threaded post for more casual use.

A robust 2-inch Crayford focuser provides dual-speed focus adjustment with 10:1 fine-focus control, meaning one turn of the coarse adjustment knob equals ten turns of the fine-focus knob. Such focus capability is a welcome luxury when scanning the heavens and landscape for subtle features and details, or for acquiring sharp focus on guide stars when used as a guide scope. What's more, the 2-inch focuser features a linear track bearing, which ensures stable and steady focus adjustment, even with heavy visual or imaging accessories attached. A 2-inch-to-1.25-inch eyepiece adapter is included to allow use of 1.25-inch eyepieces and accessories.

The fast focal ratio of the Orion Deluxe 100mm refractor makes it an excellent choice for use as a Guide Scope for guided astrophotography pursuits. Guide stars are easily obtained with the 3.9-inch aperture air-spaced doublet objective lens and the relatively wide field of view provided by the 600mm focal length. The luxurious dual-speed focuser enables you to fine-tune focus on guide stars so your guided astrophotos are of optimal quality.

Not limited to nighttime applications, the Deluxe 100mm f/6.0 can be used as a powerful daytime telescope as well. You'll be amazed at the clear and sharp views provided by this handy refractor during daylight hours. Adding an optional 45-degree correct-image diagonal provides correct daytime orientation of terrestrial subjects and landscapes.

With a weight of just 7.1 lbs and a tube length of 20.6-inches with the dew shield retracted, the Deluxe 100mm refractor is conveniently transportable for remote viewing or imaging sessions at dark sky sites.


Limited Warranty against defects in materials or workmanship for one year from date of purchase. This warranty is for the benefit of the original retail purchaser only. For complete warranty details contact us at 800-676-1343.


Please note this product was not designed or intended by the manufacturer for use by a child 12 years of age or younger.

Product Support
Visit our product support section for instruction manuals and more
  • User level
  • Optical design
  • Optical diameter
  • Focal length
  • Focal ratio
  • Coatings
  • Optics type
    Air-spaced doublet
  • Glass material
  • Eyepieces
  • Resolving power
  • Lowest useful magnification
  • Highest useful magnification
  • Highest theoretical magnification
  • Limiting stellar magnitude
  • Optical quality
    Diffraction Limited
  • Finder scope
  • Focuser
    2" dual-speed linear bearing Crayford
  • Mount type
    Optical Tube without Mount
  • Astro-imaging capability
    Lunar, planetary & long exposure
  • Tube material
  • Length of optical tube
    20.6 in.
  • Weight, optical tube
    7.1 lbs.
  • Additional included accessories
    Dovetail base for finder, 1.25" adapter
  • Other features
    Retractable dew shield, Narrow dovetail with 1/4"-20 threaded hole, Rotatable focuser
  • Warranty
    One year
Deluxe 100mm f/6.0 refractor Optical Tube Assembly (OTA)

Orders received by 1pm Eastern Standard Time for in-stock item the same business day. Order received after noon will ship the next business day. When an item is not in-stock we will ship it as soon as it becomes available. Typically in-stock items will ship first and backordered items will follow as soon as they are available. You have the option in check out to request that your order ship complete, if you'd prefer.

A per-item shipping charge (in addition to the standard shipping and handling charge) applies to this product due to its size and weight. This charge varies based on the shipping method.

Standard Delivery: $0.00
3 Day Delivery: $9.00
2 Day Delivery: $9.00
Next Day Delivery: $13.00


This product is available to ship Standard delivery within the 50 US states, APO/DPO/FPO addresses and US territories/protectorates. Delivery is not available to Canada.

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