Currency: EUR

FLT-91 f/5.9 APO (GOLD)

Temporarily out of stock

William Optics

William Optics FLT-91 f/5.9 APO (GOLD)

2 859,00 €
Estimated delivery time 3-18 days

Product description

The FLT 91 is the perfect Apochromatic refractor for visual and photographic astronomers demanding excellence in a midsize telescope. The three-element optical design features a 91mm aperture using FPL-53 glass. The STM-coatings and superb quality provide excellent optical performance and unmatched value.

Product details

Lens type:Apochromatic triplet lens with FPL53
Aperture:91 mm
Focal length:540 mm
Focal ratio:f/5.9
Strehl ratio:0.95+
Test report:Zygo test report available at additional cost
Suitable camera formats:Full Frame DSLR / Mirrorless / CMOS / CCD
Recommended flatteners:FLAT 6A III x0.8, FLAT 68 III x1.0
Flattener Adjustment:FLAT 6A III x0.8 with 5.4 mm
Focuser:Dual speed 3.3" R&P focuser
T-Mounts supported:Canon EF, RF; Nikon F, Z; Sony E; Pentax K; Micro Four Thirds (M4/3); FUJI X
Retracted length:441 mm
Extended length:510 mm
Extension tube length:40 mm
Weight (OTA only):4.165 kg
Weight:5.575 kg
Extension tube weight:0.105 kg

Shipping costs

15,90 €
European delivery 2-5 days.
PostNord Parcel locker
5,90 €
PostNord Home deliver
19,00 €
Environmentally friendly delivery to your door at the agreed time. Trackable deliveries in real time even in the evenings in the biggest cities. Change your delivery as required.
UPS Standard
14,90 €
Delivery to Europe in 2 to 5 days.
5,90 €
12,90 €

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