From its immaculate CNC-machined powder white aluminum tube to its elegant gold trim, the stunning new William Optics 71 mm Gran Turismo APO Refractor is a sight to behold. But external good looks are not the only feature that makes the GT71 the crown jewel of the apochromatic refractor world. It contains a 3-element objective that utilizes FPL-53 extra-low dispersion glass for lowering any less important spectral lines to an unbelievable extent.
Optically Unmatched Triplet air-spaced objective using FPL-53 glass in a modifiable extremely high precision CNC machined lens cell
Excellent color correct and outstanding sharpness With an f/5.9 focal ratio, the WO GT71 refractor is optimized for astrophotography. Each lens has full multi-coatings with all surfaces containing a special super-high transmission coating (STM)
2.5" Rack & Pinion Focuser. Ultra smooth 1:10 dual-speed 2.5" rack & pinion focuser with 360º rotation for a pleasant astro-imaging experience with no image shift
Comes with two locking screws on angled positions to allow for applications with bulky payloads. Large aluminum knob with integrated thermometer
Both sides as well as the back have stainless steel reinforcement inserts for taking on heavy loads without any problems
Precise camera alignment via graduated scale
Powder white CNC-machined aluminum tube with elegant gold trim accents, lens cap, and retractable dew shield Supreme quality anodizing, Light and compact enough to carry on an airplane
-Aperture: 2.8" (71 mm)
-Focal Ratio: f/5.9
-Focal Length: 420 mm
-Resolving Power: 1.62"
-Limiting Stellar Magnitude: 11.1
-Objective: Triple element air-spaced FPL-53
-Dew Shield: Retractable
-Focuser: 2.5" Rack & Pinion 360º rotatable camera angle adjuster with 1:10 fine focus
-Field Stops: Baffles
-Mounting Hardware: Rings with Vixen-style dovetail
-Tube Diameter: 82 mm
-Dew Shield Diameter: 92 mm
-Tube Length Fully Retracted: 325 mm
-Tube Length Fully Extended: 427 mm
-Tube Weight: 4.9 lbs.
-William Optics GT71 Triplet Refractor
-William Optics Flat6A-71
-2 Years Warranty
Interested Please Contact 017-6063060/03-40317167/013-2312109
Nett Price. No Additional Tax/Charges.