MEGREZ 72 DDG
Optical system
光學系統

二片式低色散 FD APO
(FPL-51 Air Spaced, Japan made Ohara glass)
Effective aperture
有效口徑

72mm
Coating
光學鍍膜

Super Multi-Coated with a special super-high transmission coating (STM Coating) on all surfaces.
多層Super Multi-coating 高 透 光 超 級 鍍 膜 於所有玻璃表面
Focal length
焦　　距

432mm（f/6)
Focuser travel distance
對焦座伸長量

81mm (3.2")
Digital Display Guage

Focus Time, date, temperature, humidity
Resolution
解 像 力

1.58 arc second
1.58秒角
Limiting magnitude
極限星等

11.1等
Internal tube baffling
筒內消光環

2 layer of baffling
2 層消光環

Tube surface handling
鏡筒表面處理

 5 layer Dupont coating
5 層杜邦 (Dupont) 烤漆
Tube length
鏡筒長度

" ( 300mm) 遮光罩後縮狀態
" ( 360mm) 遮光罩前伸狀態
Weight 重　　量

2.6kg (5.7lbs)

Crawford focuser 卡佛對焦座
 10:1 Feature touch focus 羽毛調焦