(NEW) GTF 81mm 5 element APO

Product Code: A-F81GTA
Out Of Stock
Price: 29,940NT$

Available Options


81 Soft Case (BG1-P002):

Gran Turismo (GT) 81 APO is an air-spaced Triplet FPL-53 Apochromatic with ED flattener refractor.

F5.9 lens has a heart of super low dispersion glass that reduces any secondary spectrum to an unbelievable degree. This package includes guiding rings.



Aperture 81mm
Focal Ratio F/6.6
Focal Length 535mm
Resolving Power 1.43 second of arc
Limiting Magnitude 12.2
Objective Type Five element with FPL-53 Air Spaced (2 groups), Fully Multi-Coated, STM coatings
Lens Shade Retractable with locking screw
R&P Focuser

2" 360° Rotating Camera-angle Adjuster, 1:10 fine focus

Travel Length 3.15" (80 mm)

2" Brass Compression Ring

View Finder & Handle Illuminating V Shape-
1.25" Adapter Brass Compression Ring Included
Tube Diameter 90mm
Tube Length (440 mm) Fully Retracted

(484 mm) Fully Extended

Tube Weight 8 lbs.( 3.7kg)


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