New Megrez 90

    NEW MEGREZ 90
                      Photography | Bird-watching | Star observation
攝影、賞鳥、觀星

	William Optics New Megrez 90 APO Lens Japan made Price at page bottom Stock available
Megrez 90 APO with soft bag, mounting rings HK$6,980 SPECIAL PRICE

Optical system 光學系統	ED doublet APO ED APO二枚式折射鏡
Effective aperture/focal length 有效口徑/ 焦　距/ 焦比	90mm/621mm f/6.9
Coating 光學鍍膜	STM coatings 多層S T M 低色散高級鍍膜
Objective Type	FPL-53, Air Spaced, Fully Multi-Coated, STM coatings
Linear Focuser 對焦座	2" 360° Rotating Camera-angle Adjuster, dual speed 1:10 fine focus 2吋1:10 360° 羽毛調焦磨擦式快速對焦座
Field stops	2 knife-edge baffles 刀削光柵兩個
Resolution 解像力	1.35 arc second 1.35秒角
Limiting magnitude 極限星等	11.5等
Closest focus 最近對焦	5m (with extension tueb 3m) 5m（加延長管可達3m）
Tube length 鏡筒長度	435mm (dew shield fully retracted) 約385mm（遮光罩後縮狀態）
Weight 重　　量	3.3kg

Our Best Price

1. Megrez 90 OTA w/2" power linear 2 speed focuser, 2">1.25" adapter, mounting rings, carry bag: HK$6,980.00
2. Megrez 90 OTA w/2" power linear 2 speed focuser, 2" dielectric diagonal, 2">1.25" adapter, mounting rings, carry bag: HK$7,500.00
3. Megrez 90 OTA w/2" power linear 2 speed focuser, 2" dielectric diagonal, red dot finder, 2">1.25" adapter, mounting rings, carry bag: HK$7,980.00