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The #8411 hand controller utilizes a USB connection with a computer for firmware upgrade or use with planetarium software
2" Barlow Lens - 2x - A Barlow lens doubles the magnifying power of your eyepiece by doubling its effective focal length
and discover 24 features on the lunar surface that you can identify with a telescope
A Barlow lens is the astronomy accessory that keeps on giving
Celestron Product Number: 71234
William Optics NEW ZenithStar 81 WIFD - T-ZS-81RD-WIFD Telegizmos Covers The #8411 hand controller utilizesDescription Specifications: Lens Type Doublet Apochromatic Prime Lens Focal Length 559 mm Diameter 81 mm Aperture f 6. 9 Image circle > 44mm Focuser WIFD (WO INTERNAL FOCUS DESIGN Compatible with EAF Optional Flattener FLAT 6AIII 0. 8x Adapters N A Lens Material FPL 53 Camera Format > Full Frame T Mounts Supported: Canon EF, RF Nikon F, Z Sony E Pentax K MFT (M4 3) FUJI X Tube Length 526 mm 607 mm OTA Weight 3. 55 kg 7. 82 lbs Total Weight 4. 56 kg
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