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William Optics Fluorostar 91 APO - Red

William OpticsSKU: T-FLT-91RD-RP33

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Nikon 48mm T-Ring: Yes

Canon 48mm T-Ring: Yes

Canon R 48mm T-Ring: Yes

Variant

Price:

$2,609.99

Stock:

Re-stocking soon

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Description

William Optics Fluorostar 91 Triplet Refractor

This beautiful 91mm f/5.9 APO triplet refractor is decked and ready to ride on your telescope mount! Whether you want to do visual astronomy, astrophotography, terrestrial observation or wildlife photography, this the scope for you! The FLT91 is designed form the optics down for a quality experience. The optics are housed in a steel lens cell and consist of three elements (triplet) made of fully multi-coated Ohara FPL-53 glass. Contrast, clarity and virtually colour-free results will boost your visual and astro-imaging to a new level.

Technical Specifications

Lens Type: Apochromatic Triplet Prime Lens

Focal Length: 540mm

Diameter: 91mm

Aperture: f/5.9

Focuser: Dual Speed 3.3" R&P Focuser

Color: Red; Gold; Space grey

Lens Material: FPL-53

Strehl Ratio: 0.95+

Camera Format: Full Frame DSLR / Mirrorless / CMOS / CCD

Test Report: Zygo test report available at additional cost

T-Mounts Supported: Canon EF, RF; Nikon F, Z; Sony E; Pentax K; Micro Four Thirds (M4/3); FUJI X

Retracted Length: 441mm

Extended Length: 510mm

Extension Tube Length: 40mm

OTA Weight: 4.165Kg

Total Weight: 5.575Kg

Extension Tube Weight: 0.105Kg

William Optics Fluorostar 91 APO - Red