APO Refractor 102ED F/7.0 Artesky (SKU: ART102EDF7)

Artesky APO 102ED f/7 refractor (Artesky, SKU: ART102EDF7) is an optical tube with a 102 mm objective and a 714 mm focal length for visual observing and astrophotography. The doublet combines ED glass with a lanthanum element to reduce chromatic aberration, while internal baffles help control stray light.

The listed backfocus values describe the available distance to focus from the specified connections. The required corrector-to-sensor spacing must be set separately using the documentation for the selected corrector.

Key features

• air-spaced doublet objective
• focuser: 2.5" rack-and-pinion with coarse and fine adjustment
• connections of 2" and 1.25" and an M63 × 1 thread
• retractable dew shield for transport
• tube rings machined by CNC and a Vixen-style dovetail bar
• option to use a separately available 0.8× reducer or 1× field flattener

Included items

• optical tube with focuser: Artesky APO 102ED f/7
• tube rings
• dovetail bar: Vixen style
• connections for 2" and 1.25" accessories

Technical specifications

• objective diameter: 102 mm
• focal length: 714 mm
• focal ratio: f/7
• optical design: air-spaced doublet, 2 elements
• optical glass: ED and a lanthanum element
• tube material: aluminium
• tube diameter: 105 mm
• tube length: 600 mm
• dew shield outside diameter: 121 mm
• weight with rings and dovetail bar: 4.1 kg
• focuser: dual-speed 2.5" rack-and-pinion
• focuser load capacity: up to 4 kg
• accessory-side thread: M63 × 1, female
• slip-fit accessory connections: 2" and 1.25"
• backfocus from the 2" connection: 123 mm
• backfocus from the M63 × 1 connection: 161 mm
• ring holes: 5 M6 holes on each side
• hole positions: central hole and pairs offset by 19 mm and 30 mm from the centre
• with the optional 0.8× reducer: approximately 571 mm focal length and f/5.6 focal ratio
• fine-focus reduction: 1:10
• rotating focuser: yes

The threaded and slip-fit connections allow the refractor to be configured for observing or imaging with a suitable camera and an optional corrector.