مميزات خاصة

[AVAILABLE LENGTHS] Single-piece focal length extension tube in M54x75 format, selectable lengths 3mm, 5mm, 7mm, 10mm, 12mm, 15mm, 20mm, 30mm, 40mm, 50mm so you can match exact back focus needs for your setup.
[STACKABLE THREAD DESIGN] Both internal and external M54x75 threads permit stacking with adapters, washers and accessories for precise spacing while preserving coaxial alignment of the optical path.
[CORRECTS INSUFFICIENT BACK FOCUS] Adds the extra spacing needed between camera sensor and optical elements so visual and imaging accessories reach critical focus while helping to limit edge shading.
[ANTI-GLARE CONSTRUCTION] Black anodized finish and matte internal surfaces reduce stray light and reflections inside the tube, supporting cleaner results during long exposures.
[USE CASES & COMPATIBILITY] Suited for telescopes, guide scopes, MPCCs, focusers, field flatteners and filter wheels used in astrophotography and planetary imaging; verify M54x75 thread fit before pairing.

وصف

Features:
* Anodized aluminum with matte-finished internal threads effectively reduces glare; the Focal Length Extension Tube features M54×0.75 internal and external threads for a secure and durability connection.
* Addresses insufficient back focus distance: This Focal Length Extension Tube extends the distance between the lens and camera, making it suitable for telescopes, lenses, MPCCs, guide scopes, and other devices, making sure optimal focus.
* M54×0.75 internal and external threads allow for secure stacking of washers and adapters; the Focal Length Extension Tube maintains optical alignment for clear astronomical imaging.
* Available in multiple sizes: 3mm/5mm/7mm/10mm/12mm/15mm/20mm/30mm/40mm/50mm, meeting varying back focus requirements.
*Ideal for astronomical photography setups: Use the Focal Length Extension Tube with a focuser, field flattener, or filter wheel to finely adjust the spacing for incisive, low-vignetting images.

Specifications:
*Product Name: Focal Length Extension Tube for Astronomical Telescope Photography
*Material: Aluminum
*Size: approx.
Internal Thread: M54 x 0.75mm
External Thread: M54 x 0.75mm
Length: 3mm/5mm/7mm/10mm/12mm/15mm/20mm/30mm/40mm/50mm
*Color: Black
*Weight: approximately 5g-200g

Package Contents:
1 x Focal Length Extension Tube

مرحبًا،

بحث

أنبوب تمديد الطول البؤري M54x0.75 للتصوير الفوتوغرافي بالتلسكوب الفلكي، محول من الألومنيوم الملولب لتمديد التركيز الخلفي مع نطاقات العدسات ونطاقات دليل MPCCs (M54*0.75-10 مم)

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