1. 2013-07-30 21:15 HKT

2. Saturn
• There is a ring surrounding Saturn
• A yellowish planet with a ring
• A pale brown ring surrounding the sphere
is observed
• There are different yellowish-brown layer
moving on the surface
• A ring of satellites

3. Venus (-3.3 mag)
• Very bright, seems like emitting light
beams, rotate quickly
• 震, shinning
• Slightly green, extremely wobbly

5. Binoculars 雙筒望遠鏡
7 X 50
Magnification
放大倍數
Aperture
口徑(mm)

6. 折射式望遠鏡
反射式望遠鏡
Credit: Sky Watch

7. Focal length
焦距

12. Telescope Structure
Optical
Tube
Finderscope
Mount
Eyepiece
Tripod

13. Credit: Josch Hambsch

14. 地平式 赤道式

15. 地平經度
地平緯度
天頂

17. 地平裝置
Altazimuth
Mount

18. 赤道裝置
Equatorial
Mount

19. Credit: HKU
Earth
Circumpolar star (always visible)
Celestial
Sphere
Never visible,
always below
the horizonRise in the
east and set
in the west
The horizon

20. Magnification 放大倍率

21. Focal ratio 焦比

22. 視場 Field of View

23. 真實視場 True Field of View

24. 目視視場 Apparent Field of View

27. 分解力 Resolving power

28. Resolution

31. 視寧度 Seeing

34. 哈勃太空望遠鏡影像
Hubble Space
Telescope Image
地基望遠鏡影像
Ground-based
Telescope Image
Credit: NASA, ESA, Hillary Mathis, NOAO, AURA, NSF, The Hubble Heritage Team (STScI/AURA)
Aim for Higher Resolution
尋找更高分辨率