天文學是研究天空星象，以及各種星體的學問。
Astronomy is a knowledge studying about sky and stars.

國內天文學 WWW 服務站

TAS 臺灣天文網 (Astro Wu)
臺北市立天文館

國外天文學 WWW 服務站

American Astronomical Society.

天文期刊
Sky & Telescope
Sky & Telescope, Publication Inc.
SKY Online -- Weekly News Bulletin.

行星
繞太陽運行的星星稱為行星。
Planets
Stellar objects that orbit around the sun are called planets.
Views of the solar system
Nine planets
Solar system browser

望遠鏡
Telescope
Purchasing a telescope

天文物理
有關星星，及其各種現象的物理學稱之。
Astrophysics
Physics about stellar objects and their phenomena.
The Astrophysical Journal
Astrophysics Data System

美國太空總署
NASA
NASA Information Services via World Wide Web
NASA Information by Subject
NASA Space Science Information
NASA/GSFC SSDOO
NASA Online Educational Resources
NASA Public Use of Remote Sensing Data
NASA RSD Projects
NSSDC Photo Gallery
NSSDC /sl9/html/
NAIC.NASA.GOV Web Information Available
Guide to NASA Online Resources
NASA Resources - Alphabetical List of Resources
Satellite Information: /anon_dir/active/norad/
Weather Information Superhighway
Space Telescope Electronic Information Service
STScI/HST Pictures
NASA NEWS
PlanetaryDataSystem Home Page
Project Galileo (JPL)

我的天文攝影

1996.3.27. pm 8:00 - 9:00 在我家屋頂陽台看到百武彗星，靠近北方，
肉眼勉強可見一團霧狀的亮光，用 2吋口徑，20倍的雙筒望遠鏡可較清楚
見到一團霧狀的白色亮光，稱為彗髮。
此影像是由相片翻拍的，原相片是用單眼像機 50mm 鏡頭，1.4光圈，
ISO 100 底片，B 快門曝光 30 秒得到的。
I saw comet Hyakutake on the roof of my house on 1996.3.27. pm 8:00.
It was near the north direction. I saw a round hazzy fog by naked-eye.
With a 20x, 2-inch binoculars, it was seen more clearly. The round hazzy
fog is called "coma" of a comet. This image is reproduced from a photograph.
The photograph is made by a camera with 50mm lens, 1.4 aperture,
ISO 100 negative film, B shutter to expose for 30 seconds.

1997.4.23. pm 7:15 - 7:45 在我家屋頂陽台看到海爾波普彗星，靠近西北方，
肉眼可見一團霧狀的亮光，用 2吋口徑，20倍的雙筒望遠鏡可清楚見到一團霧狀
的白色亮光，稱為彗髮。用80mm口徑的天文望遠鏡，焦距 910mm ，目鏡 LV20，
約 45 倍，可清楚見到彗髮中央有一顆亮點，是彗星的固體中心，稱為彗核。
此影像是由相片翻拍的，原相片是用單眼像機 50mm 鏡頭，1.4光圈，
ISO 100 底片，B 快門曝光 4 秒得到的。
I saw comet Hale-Bopp on the roof of my house on 1997.4.23. pm 7:15-7:45.
It was near the northwest direction. I saw a round hazzy fog by naked-eye.
With a 20x, 2-inch binoculars, it was seen more clearly. The round hazzy
fog is called "coma" of a comet. With an astronomical refractor telescope,
80mm in diameter, 910mm focal length, and LV20 eyepiece, I saw there is a
white spot within the hazzy fog. It is the solid center of a comet,
called "nucleus".
This image is reproduced from a photograph. The photograph is made by
a camera with 50mm lens, 1.4 aperture, ISO 100 negative film,
B shutter to expose for 4 seconds.

金星

木星

土星