Starfield Gear 115 (EDT115) — 115mm f/7 Triplet APO Refractor

The Starfield Gear 115 / EDT115 f/7 is a 115mm triplet apochromatic refractor designed as a practical wide-field imaging platform with a mechanical package built for real camera loads. It was recognized as one of the 2024 Star Products by Astronomy Magazine.

The Gear 115 pairs ED-glass triplet optics with a 3.7" two-speed rack-and-pinion focuser, a Camera Angle Adjuster (CAA) for framing control, and GÉAR-series standard hardware including HD rings, a Losmandy-style dovetail, and an accessory-ready handle.

Optics and Contrast Control

Triplet APO objective with ED glass

The Gear 115 uses ED-glass triplet APO optics and is specified as fully multi-coated for high transmission. The optical tube is also described as internally baffled to suppress stray light and preserve contrast.

Focuser, Rotation, and Framing for Imaging

3.7" two-speed CNC rack-and-pinion focuser (ball bearings) with full rotation

A defining mechanical feature is the 3.7" two-speed rack-and-pinion focuser with ball bearings, specified as fully rotatable and intended to support heavy camera loads and accessories. The page notes that optional motor focusers can be installed, and that the focuser accepts 63mm accessories with a pressure-fit lock.

Camera Angle Adjuster (CAA)

The integrated CAA is intended to make target framing straightforward without adding flex or forcing a change to your focuser position—useful when rotating a camera and managing cable routing.

Optional reducer and flattener (threaded, secure connection)

The page lists an optional 0.8× adjustable reducer and an optional 1.0× flattener, described as threaded for a secure connection to the focuser with no flex.

Mechanical Package and Handling

Mounting hardware: rings + Losmandy dovetail + handle

The Gear 115 includes HD CNC tube rings and a Losmandy-style dovetail bar for a rigid mount interface. A handle is included for transport and accessory mounting.

Retractable dew shield

A retractable dew shield supports compact transport and setup. The specifications list it as 2.5".

Weight and mount class guidance (as stated)

The page specifies a total weight of 15 lb (including rings) and notes it can be used on modern 30 lb payload-class mounts.

What’s Included

• Soft case with die-cut foam
• Optical test report
• HD CNC tube rings
• Losmandy-style dovetail bar
• Accessory/transport handle

Technical Specifications (Gear 115 / EDT115)

• Aperture / Focal Ratio / Focal Length: 115mm / f/7 / 805mm
• Resolution: 1.01 arc-seconds
• Limiting Visual Magnitude: 13
• Highest Useful Magnification: 230×
• Coatings: Fully multi-coated (high transmission)
• Tube finish: Aluminum with durable white matte powder coat
• Dew shield: Retractable (listed as 2.5")
• Focuser: Dual-speed rack-and-pinion; 1:10 microfocuser knob
• Finder interface: Dual finder shoes
• 2" adaptor: Brass compression ring with three clamping screws
• Weight: 15 lb (including tube rings)
• Length: 28" (dew shield retracted), 35" (dew shield extended)
• Contrast control: Internally baffled
• Imaging focuser details: 3.7" two-speed CNC rack-and-pinion, ball bearings, fully rotatable; optional motor focuser support; heavy camera load support
• Accessory compatibility: Supports 2" and 1.25" eyepiece accessories
• Mounting: HD CNC rings + Losmandy dovetail; handle supports finder-shoe dovetail accessories

Gear 115 FAQ

Is the Gear 115 intended for astrophotography?

Yes—the page emphasizes a large, rotating 3.7" rack-and-pinion focuser with ball bearings, a pressure-fit lock for 63mm accessories, and a Camera Angle Adjuster (CAA) intended to help framing without adding flex.

What reducer/flattener options are listed?

An optional 0.8× adjustable reducer and an optional 1.0× flattener are listed, described as threaded for a secure connection with no flex.

What mount size is recommended?

The page notes a total scope weight of 15 lb and states it can be used on modern 30 lb payload-class mounts.