Top 100 Vocabulary for Visiting and Touring Korea | Yeongwol
Welcome to Yeongwol! At Byeolmaro Observatory, a visitor can move from telescope optics and mounts into celestial coordinates, lunar features, planets, deep-sky objects, spectroscopy and the practical realities of public observing. These 100 English words and expressions are built around observational astronomy, with simplified Chinese meanings and bilingual examples.
VISITKOREA describes Byeolmaro as a public astronomical observatory on Bongnaesan Mountain at an elevation of about 799.8 metres. It has several telescopes, including an 80-centimetre instrument, and uses advance reservation for observing programmes.
How to use this guide / 使用说明： Pronunciation cues are approximate rather than IPA. Astronomy definitions are simplified for learners but keep the scientific distinctions intact. Actual targets depend on season, weather, time and observing conditions.
Your destination / 目的地： Yeongwol — 宁越 — 영월. Save the Korean name for Byeolmaro Observatory and your reservation slot.
Find your next situation / 快速导航
1. Observatory and telescope optics · 2. Mounts, tracking and focusing · 3. Celestial coordinates · 4. Star maps and brightness · 5. Observing conditions and Moon phases · 6. Moon and planets · 7. Deep-sky objects · 8. Meteors and Solar System objects · 9. Distance and spectroscopy · 10. Stars, planetarium and visitor planning
Yeongwol context · Observing questions · Conversation · Model paragraph · Practice · Questions · Official source
1. Observatory and telescope optics | Words 1–10
1. astronomical observatory
Pronunciation: as-truh-NOM-ih-kuhl ub-ZUR-vuh-tor-ee · 中文： 天文台 · Meaning: a facility equipped for observing and studying the sky.
Example: Byeolmaro is a public astronomical observatory on Bongnaesan Mountain.
中文例句： 别马路是一座位于蓬莱山上的公共天文台。
2. observing dome
Pronunciation: OBSERVING DOME · 中文： 观测圆顶 · Meaning: a rotating dome that shelters a telescope and opens for observing.
Example: The observing dome turned until its opening faced the target.
中文例句： 观测圆顶转动到开口朝向目标的位置。
3. telescope aperture
Pronunciation: TELESCOPE AP-uh-chuh · 中文： 望远镜口径 · Meaning: the diameter of the opening or main light-gathering element of a telescope.
Example: A larger telescope aperture can collect more light.
中文例句： 更大的望远镜口径可以收集更多光线。
4. primary mirror
Pronunciation: PRIMARY MIRROR · 中文： 主镜 · Meaning: the main light-gathering mirror in a reflecting telescope.
Example: The primary mirror sits deep inside the telescope tube.
中文例句： 主镜位于望远镜镜筒内部。
5. secondary mirror
Pronunciation: SECONDARY MIRROR · 中文： 副镜 · Meaning: a smaller mirror that redirects light within a reflecting telescope.
Example: The secondary mirror sends light toward the eyepiece or detector.
中文例句： 副镜把光线引向目镜或探测器。
6. reflecting telescope
Pronunciation: REFLECTING TELESCOPE · 中文： 反射式望远镜 · Meaning: a telescope that uses mirrors to collect and focus light.
Example: The large instrument in the dome was a reflecting telescope.
中文例句： 圆顶里的大型仪器是一台反射式望远镜。
7. refracting telescope
Pronunciation: REFRACTING TELESCOPE · 中文： 折射式望远镜 · Meaning: a telescope that uses lenses to collect and focus light.
Example: The refracting telescope had a long narrow tube.
中文例句： 折射式望远镜有一根细长镜筒。
8. eyepiece
Pronunciation: EYE-pees · 中文： 目镜 · Meaning: the optical part through which a person looks into a telescope.
Example: The operator changed the eyepiece before the next target.
中文例句： 观测员在看下一个目标前更换了目镜。
9. telescope focal length
Pronunciation: TELESCOPE FOCAL LENGTH · 中文： 望远镜焦距 · Meaning: the distance over which the telescope’s optics bring light to focus.
Example: Telescope focal length affects the field of view and magnification.
中文例句： 望远镜焦距会影响视场和放大效果。
10. optical magnification
Pronunciation: OPTICAL MAGNIFICATION · 中文： 光学放大倍数 · Meaning: the apparent enlargement produced by an optical system.
Example: High optical magnification is not always useful in poor seeing.
中文例句： 大气视宁度差时，高光学放大倍数不一定有用。
2. Mounts, tracking and focusing | Words 11–20
11. mounting system
Pronunciation: MOUNTING SYSTEM · 中文： 望远镜支架系统 · Meaning: the mechanical system that supports and points a telescope.
Example: The mounting system kept the telescope steady during tracking.
中文例句： 望远镜支架系统在跟踪时保持仪器稳定。
12. equatorial mount
Pronunciation: ee-kwuh-TOR-ee-uhl MOUNT · 中文： 赤道仪 · Meaning: a telescope mount aligned with Earth’s rotation axis for celestial tracking.
Example: An equatorial mount can follow stars with motion around one main axis.
中文例句： 赤道仪可以通过一个主要轴的运动来跟踪恒星。
13. alt-azimuth mount
Pronunciation: ALT-AZIMUTH MOUNT · 中文： 地平式支架 · Meaning: a mount that moves in altitude and azimuth.
Example: The alt-azimuth mount moved up and sideways to follow the target.
中文例句： 地平式支架通过上下和水平转动来跟踪目标。
14. tracking motor
Pronunciation: TRACKING MOTOR · 中文： 跟踪马达 · Meaning: a motor that moves a telescope to follow a celestial object.
Example: The tracking motor kept Saturn centred for several minutes.
中文例句： 跟踪马达让土星在几分钟内保持在视场中央。
15. finder scope
Pronunciation: FINDER SCOPE · 中文： 寻星镜 · Meaning: a small auxiliary telescope used to aim a larger telescope.
Example: The finder scope helped the operator point toward the bright star.
中文例句： 寻星镜帮助观测员把主镜指向亮星。
16. star diagonal
Pronunciation: STAR DIAGONAL · 中文： 天顶镜 · Meaning: an angled optical accessory that redirects the viewing path.
Example: The star diagonal made the eyepiece easier to reach.
中文例句： 天顶镜让目镜位置更方便观察。
17. focus knob
Pronunciation: FOCUS KNOB · 中文： 调焦旋钮 · Meaning: a control used to sharpen the telescope image.
Example: I turned the focus knob slowly until the lunar edge looked crisp.
中文例句： 我慢慢转动调焦旋钮，直到月面边缘清晰。
18. telescope tube
Pronunciation: TELESCOPE TUBE · 中文： 望远镜镜筒 · Meaning: the body holding a telescope’s optical components in alignment.
Example: The telescope tube moved smoothly with the mount.
中文例句： 望远镜镜筒随支架平稳转动。
19. dew shield
Pronunciation: DEW SHIELD · 中文： 防露罩 · Meaning: a tube or hood that helps reduce dew forming on telescope optics.
Example: The dew shield protected the front lens during a humid night.
中文例句： 潮湿夜晚，防露罩帮助保护前端镜片。
20. optical alignment
Pronunciation: OPTICAL ALIGNMENT · 中文： 光学准直 · Meaning: the correct alignment of a telescope’s optical components.
Example: Good optical alignment keeps stars sharp across the view.
中文例句： 良好的光学准直让视场中的恒星保持清晰。
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3. Celestial coordinates | Words 21–30
21. celestial sphere
Pronunciation: CELESTIAL SPHERE · 中文： 天球 · Meaning: an imaginary sphere used to map positions in the sky.
Example: The celestial sphere is a model for describing where objects appear.
中文例句： 天球是用来描述天体表观位置的模型。
22. celestial pole
Pronunciation: CELESTIAL POLE · 中文： 天极 · Meaning: the point in the sky aligned with Earth’s rotation axis.
Example: Stars appear to circle around the celestial pole.
中文例句： 恒星看起来会围绕天极转动。
23. celestial equator
Pronunciation: CELESTIAL EQUATOR · 中文： 天赤道 · Meaning: the projection of Earth’s equator onto the sky.
Example: The celestial equator divides the sky into northern and southern halves.
中文例句： 天赤道把天空分成南北两部分。
24. ecliptic
Pronunciation: ih-KLIP-tik · 中文： 黄道 · Meaning: the apparent yearly path of the Sun across the celestial sphere.
Example: Most planets stay close to the ecliptic in the sky.
中文例句： 大多数行星在天空中都靠近黄道。
25. horizon line
Pronunciation: HORIZON LINE · 中文： 地平线 · Meaning: the apparent boundary between sky and ground.
Example: The first bright star appeared above the horizon line.
中文例句： 第一颗亮星出现在地平线上方。
26. zenith
Pronunciation: ZEE-nith · 中文： 天顶 · Meaning: the point in the sky directly overhead.
Example: The constellation passed close to the zenith.
中文例句： 这个星座经过接近天顶的位置。
27. azimuth angle
Pronunciation: AZ-ih-muth ANGLE · 中文： 方位角 · Meaning: the horizontal direction of an object measured around the horizon.
Example: The display gave the target’s azimuth angle before observation.
中文例句： 观测前，显示屏给出了目标的方位角。
28. altitude angle
Pronunciation: ALTITUDE ANGLE · 中文： 高度角 · Meaning: the angular height of an object above the horizon.
Example: The Moon’s altitude angle increased during the evening.
中文例句： 晚上，月亮的高度角逐渐升高。
29. right ascension
Pronunciation: RIGHT ASCENSION · 中文： 赤经 · Meaning: a celestial coordinate similar to longitude on the sky.
Example: Right ascension helps locate objects on star charts.
中文例句： 赤经有助于在星图上定位天体。
30. declination
Pronunciation: dek-lih-NAY-shuhn · 中文： 赤纬 · Meaning: a celestial coordinate similar to latitude on the sky.
Example: Declination tells how far north or south an object lies on the celestial sphere.
中文例句： 赤纬表示天体在天球上偏北或偏南的程度。
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4. Star maps and brightness | Words 31–40
31. star chart
Pronunciation: STAR CHART · 中文： 星图 · Meaning: a map showing stars, constellations and other celestial objects.
Example: We checked the star chart before going outside.
中文例句： 到户外前，我们先查看了星图。
32. planisphere
Pronunciation: PLAN-ih-sfeer · 中文： 活动星图 · Meaning: a rotating star map showing which constellations are visible at a given time.
Example: The planisphere showed the autumn sky for our observing hour.
中文例句： 活动星图显示了我们观测时段的秋季星空。
33. named constellation
Pronunciation: NAMED CONSTELLATION · 中文： 命名星座 · Meaning: an officially named region or familiar star pattern in the sky.
Example: The guide pointed out a named constellation above the eastern ridge.
中文例句： 向导指出了东侧山脊上方的一个命名星座。
34. asterism
Pronunciation: AS-tuh-riz-uhm · 中文： 星群图案 · Meaning: a recognizable star pattern that may be part of one or more constellations.
Example: The Big Dipper is a familiar asterism rather than a whole constellation.
中文例句： 北斗七星是熟悉的星群图案，而不是完整星座。
35. zodiac constellation
Pronunciation: ZODIAC CONSTELLATION · 中文： 黄道星座 · Meaning: a constellation lying along the region of the ecliptic.
Example: Several zodiac constellations were below the horizon that night.
中文例句： 当晚有几个黄道星座位于地平线以下。
36. circumpolar star
Pronunciation: CIRCUMPOLAR STAR · 中文： 拱极星 · Meaning: a star that never sets below the horizon from a given latitude.
Example: A circumpolar star remains visible through much of the night.
中文例句： 拱极星在夜间的大部分时间都不会落下。
37. magnitude scale
Pronunciation: MAG-nih-tyood SCALE · 中文： 星等尺度 · Meaning: the astronomical scale used to describe apparent or intrinsic brightness.
Example: On the magnitude scale, smaller numbers mean brighter objects.
中文例句： 在星等尺度上，数值越小通常表示越亮。
38. apparent magnitude
Pronunciation: APPARENT MAG-nih-tyood · 中文： 视星等 · Meaning: how bright an astronomical object appears from Earth.
Example: The apparent magnitude depends on both luminosity and distance.
中文例句： 视星等同时受天体光度和距离影响。
39. absolute magnitude
Pronunciation: ABSOLUTE MAG-nih-tyood · 中文： 绝对星等 · Meaning: a standardized measure of intrinsic astronomical brightness.
Example: Absolute magnitude lets astronomers compare stars at the same reference distance.
中文例句： 绝对星等让天文学家在统一参考距离下比较恒星亮度。
40. light pollution
Pronunciation: LIGHT POLLUTION · 中文： 光污染 · Meaning: artificial light that brightens the night sky and hides faint objects.
Example: Mountain observing is valuable because light pollution can be lower than in city centres.
中文例句： 山地观测的优势之一是光污染可能比城市中心低。
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5. Observing conditions and Moon phases | Words 41–50
41. dark adaptation
Pronunciation: DARK ADAPTATION · 中文： 暗适应 · Meaning: the process by which human eyes become more sensitive in darkness.
Example: Dark adaptation improved after we stopped looking at bright phone screens.
中文例句： 不再看明亮手机屏幕后，我们的暗适应逐渐改善。
42. red light
Pronunciation: RED LIGHT · 中文： 红光照明 · Meaning: dim red illumination used to preserve night vision better than bright white light.
Example: The guide used red light to read the chart outdoors.
中文例句： 向导在户外用红光照明星图。
43. observing session
Pronunciation: OBSERVING SESSION · 中文： 观测场次 · Meaning: a scheduled period for astronomical observation.
Example: Our observing session began after the sky became fully dark.
中文例句： 天空完全变暗后，我们的观测场次开始。
44. viewing queue
Pronunciation: VIEWING QUEUE · 中文： 观测排队队伍 · Meaning: a line of visitors waiting to look through a telescope.
Example: The viewing queue moved slowly because each visitor needed time at the eyepiece.
中文例句： 观测排队队伍移动较慢，因为每位游客都需要在目镜前停留一会儿。
45. cloud cover
Pronunciation: CLOUD COVER · 中文： 云量 · Meaning: the amount of sky covered by cloud.
Example: Increasing cloud cover hid the fainter stars first.
中文例句： 云量增加后，较暗的恒星最先被遮住。
46. atmospheric seeing
Pronunciation: ATMOSPHERIC SEEING · 中文： 大气视宁度 · Meaning: the steadiness of the atmosphere as it affects telescope images.
Example: Poor atmospheric seeing made the planet image shimmer.
中文例句： 大气视宁度差时，行星图像会抖动。
47. transparency
Pronunciation: TRANSPARENCY · 中文： 大气透明度 · Meaning: the clarity of the atmosphere for seeing faint objects.
Example: Good transparency made the Milky Way easier to see.
中文例句： 良好的大气透明度让银河更容易看见。
48. moon phase
Pronunciation: MOON PHASE · 中文： 月相 · Meaning: the changing illuminated shape of the Moon seen from Earth.
Example: The moon phase affected how bright the night sky looked.
中文例句： 月相影响夜空整体亮度。
49. crescent moon
Pronunciation: CRESCENT MOON · 中文： 蛾眉月 · Meaning: a Moon phase showing a thin curved illuminated portion.
Example: A crescent moon hung low after sunset.
中文例句： 日落后，一弯蛾眉月低悬在天空。
50. first quarter
Pronunciation: FIRST QUARTER · 中文： 上弦月 · Meaning: the Moon phase in which half of the visible disk is illuminated.
Example: At first quarter, shadows near the lunar terminator can look dramatic.
中文例句： 上弦月时，月面晨昏线附近的阴影很有层次。
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6. Moon and planets | Words 51–60
51. full moon
Pronunciation: FULL MOON · 中文： 满月 · Meaning: the Moon phase in which the visible disk appears fully illuminated.
Example: The full moon made the landscape bright but washed out faint stars.
中文例句： 满月照亮了地面，却让暗星更难看见。
52. lunar crater
Pronunciation: LUNAR CRATER · 中文： 月球撞击坑 · Meaning: a bowl-shaped depression on the Moon, usually formed by impact.
Example: A lunar crater showed a bright rim and dark interior shadow.
中文例句： 一个月球撞击坑呈现明亮边缘和内部阴影。
53. lunar maria
Pronunciation: LUNAR MARIA · 中文： 月海 · Meaning: large dark basaltic plains on the Moon.
Example: The lunar maria are darker than the surrounding highlands.
中文例句： 月海比周围高地颜色更暗。
54. terminator line
Pronunciation: TERMINATOR LINE · 中文： 月面晨昏线 · Meaning: the boundary between the illuminated and dark parts of the Moon.
Example: Relief looked strongest near the terminator line.
中文例句： 月面晨昏线附近的地形起伏最明显。
55. planet observation
Pronunciation: PLANET OBSERVATION · 中文： 行星观测 · Meaning: observing a planet through a telescope or other instrument.
Example: Planet observation required more patience than looking at the Moon.
中文例句： 行星观测比看月亮更需要耐心。
56. Jupiter bands
Pronunciation: JUPITER BANDS · 中文： 木星云带 · Meaning: the broad light and dark atmospheric bands visible on Jupiter.
Example: Jupiter bands became visible after careful focusing.
中文例句： 仔细调焦后，木星云带逐渐显现。
57. Saturn rings
Pronunciation: SATURN RINGS · 中文： 土星环 · Meaning: the prominent ring system surrounding Saturn.
Example: Saturn rings looked tiny but unmistakable through the telescope.
中文例句： 土星环在望远镜里虽然很小，但非常明显。
58. Venus phase
Pronunciation: VENUS PHASE · 中文： 金星相位 · Meaning: the changing illuminated shape of Venus seen from Earth.
Example: The Venus phase can appear crescent-like through a telescope.
中文例句： 金星相位通过望远镜看时可能呈新月状。
59. Mars disk
Pronunciation: MARS DISK · 中文： 火星圆面 · Meaning: the small apparent disk of Mars seen through a telescope.
Example: The Mars disk was much smaller than the Moon in the eyepiece.
中文例句： 在目镜里，火星圆面比月亮小得多。
60. planetary conjunction
Pronunciation: PLANETARY CONJUNCTION · 中文： 行星合相 · Meaning: an apparent close grouping of planets or other celestial objects in the sky.
Example: The lecture explained a planetary conjunction scheduled later that month.
中文例句： 讲座介绍了当月稍后出现的一次行星合相。
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7. Deep-sky objects | Words 61–70
61. open cluster
Pronunciation: OPEN CLUSTER · 中文： 疏散星团 · Meaning: a loose group of stars formed together and held by weak mutual gravity.
Example: The open cluster looked like a glittering handful of stars.
中文例句： 疏散星团看起来像一把闪亮的星星。
62. globular cluster
Pronunciation: GLOBULAR CLUSTER · 中文： 球状星团 · Meaning: a dense spherical group containing many old stars.
Example: The globular cluster appeared as a compact fuzzy glow.
中文例句： 球状星团看起来像一个紧密的模糊光团。
63. nebula
Pronunciation: NEB-yuh-luh · 中文： 星云 · Meaning: a cloud of gas and dust in space.
Example: The nebula was easier to see away from bright city lights.
中文例句： 远离城市强光后，星云更容易看见。
64. galaxy
Pronunciation: GALAXY · 中文： 星系 · Meaning: a vast gravitational system of stars, gas, dust and dark matter.
Example: A galaxy can contain billions of stars.
中文例句： 一个星系可以包含数十亿颗恒星。
65. Milky Way
Pronunciation: MILKY WAY · 中文： 银河 · Meaning: the galaxy containing the Solar System, seen from Earth as a band of light.
Example: The Milky Way crossed the dark mountain sky.
中文例句： 银河横跨漆黑的山地夜空。
66. Andromeda Galaxy
Pronunciation: ANDROMEDA GALAXY · 中文： 仙女座星系 · Meaning: a large neighbouring galaxy visible to the unaided eye under dark conditions.
Example: The Andromeda Galaxy appeared as a faint smudge in binoculars.
中文例句： 用双筒望远镜看时，仙女座星系像一小团淡淡的光。
67. double star
Pronunciation: DOUBLE STAR · 中文： 双星 · Meaning: two stars appearing close together in the sky, sometimes physically bound.
Example: The telescope separated the double star into two points.
中文例句： 望远镜把双星分辨成两个光点。
68. variable star
Pronunciation: VARIABLE STAR · 中文： 变星 · Meaning: a star whose brightness changes over time.
Example: A variable star can brighten and fade on predictable or irregular timescales.
中文例句： 变星的亮度会按规律或不规律方式变化。
69. meteor shower
Pronunciation: METEOR SHOWER · 中文： 流星雨 · Meaning: an event when many meteors appear to radiate from one region of sky.
Example: The meteor shower was best seen without a telescope.
中文例句： 流星雨最好用肉眼观看，不需要望远镜。
70. radiant point
Pronunciation: RADIANT POINT · 中文： 辐射点 · Meaning: the region of sky from which meteors in a shower appear to originate.
Example: The radiant point rose higher after midnight.
中文例句： 午夜之后，辐射点升得更高。
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8. Meteors and Solar System objects | Words 71–80
71. meteor
Pronunciation: METEOR · 中文： 流星 · Meaning: a streak of light caused by a small space particle entering Earth’s atmosphere.
Example: A bright meteor crossed the northern sky in less than a second.
中文例句： 一颗明亮流星不到一秒就划过北方天空。
72. fireball
Pronunciation: FIREBALL · 中文： 火流星 · Meaning: an exceptionally bright meteor.
Example: The fireball was bright enough to cast a brief shadow.
中文例句： 火流星亮到短暂投下了影子。
73. comet
Pronunciation: COMET · 中文： 彗星 · Meaning: an icy Solar System body that can develop a glowing coma and tail near the Sun.
Example: The comet was low in the western sky after sunset.
中文例句： 日落后，彗星位于西方低空。
74. comet tail
Pronunciation: COMET TAIL · 中文： 彗尾 · Meaning: the stream of dust or ionized gas extending from a comet.
Example: The comet tail pointed away from the Sun.
中文例句： 彗尾指向远离太阳的方向。
75. asteroid
Pronunciation: ASTEROID · 中文： 小行星 · Meaning: a rocky or metallic small body orbiting the Sun.
Example: Most known asteroids orbit between Mars and Jupiter.
中文例句： 大多数已知小行星在火星和木星之间运行。
76. dwarf planet
Pronunciation: DWARF PLANET · 中文： 矮行星 · Meaning: a Solar System body orbiting the Sun that is rounded but has not cleared its orbital neighbourhood.
Example: Pluto is classified as a dwarf planet.
中文例句： 冥王星被归类为矮行星。
77. satellite pass
Pronunciation: SATELLITE PASS · 中文： 人造卫星过境 · Meaning: the visible passage of an artificial satellite across the sky.
Example: The satellite pass lasted only a few minutes.
中文例句： 这次人造卫星过境只持续了几分钟。
78. ISS pass
Pronunciation: ISS PASS · 中文： 国际空间站过境 · Meaning: a visible overhead passage of the International Space Station.
Example: The ISS pass looked like a bright moving star.
中文例句： 国际空间站过境时看起来像一颗移动的亮星。
79. light-year
Pronunciation: LIGHT-YEAR · 中文： 光年 · Meaning: the distance light travels in one year.
Example: A light-year measures distance rather than time.
中文例句： 光年是距离单位，而不是时间单位。
80. astronomical unit
Pronunciation: as-truh-NOM-ih-kuhl UNIT · 中文： 天文单位 · Meaning: the average distance between Earth and the Sun used as a Solar System distance unit.
Example: Astronomical units are convenient for comparing planetary distances.
中文例句： 天文单位很适合比较太阳系内的行星距离。
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9. Distance and spectroscopy | Words 81–90
81. parsec
Pronunciation: PAR-sek · 中文： 秒差距 · Meaning: an astronomical distance unit equal to about 3.26 light-years.
Example: Astronomers often use parsecs when discussing stellar distances.
中文例句： 天文学家讨论恒星距离时经常使用秒差距。
82. stellar distance
Pronunciation: STELLAR DISTANCE · 中文： 恒星距离 · Meaning: the distance from Earth to a star.
Example: Stellar distance can be estimated using methods such as parallax.
中文例句： 恒星距离可以通过视差等方法估算。
83. spectroscope
Pronunciation: SPEK-truh-skohp · 中文： 分光镜 · Meaning: an instrument that separates light into its component wavelengths.
Example: The spectroscope revealed information hidden in a star’s light.
中文例句： 分光镜揭示了恒星光线中隐藏的信息。
84. diffraction grating
Pronunciation: dih-FRAK-shuhn GRATING · 中文： 衍射光栅 · Meaning: an optical element with many fine lines that separates light by wavelength.
Example: The diffraction grating spread white light into a spectrum.
中文例句： 衍射光栅把白光展开成光谱。
85. stellar spectrum
Pronunciation: STELLAR SPECTRUM · 中文： 恒星光谱 · Meaning: the distribution of a star’s light across wavelengths.
Example: The stellar spectrum contains clues about temperature and composition.
中文例句： 恒星光谱包含温度和成分的信息。
86. emission line
Pronunciation: EMISSION LINE · 中文： 发射线 · Meaning: a bright spectral line produced when atoms or ions emit light at specific wavelengths.
Example: The gas display showed several bright emission lines.
中文例句： 气体展示中出现了几条明亮发射线。
87. absorption line
Pronunciation: ABSORPTION LINE · 中文： 吸收线 · Meaning: a dark spectral line where material absorbs specific wavelengths.
Example: Absorption lines help identify elements in stellar atmospheres.
中文例句： 吸收线可以帮助识别恒星大气中的元素。
88. star colour
Pronunciation: STAR COLOUR · 中文： 恒星颜色 · Meaning: the apparent colour of a star related partly to surface temperature.
Example: Star colour ranged from bluish white to orange-red.
中文例句： 恒星颜色从蓝白色到橙红色不等。
89. stellar temperature
Pronunciation: STELLAR TEMPERATURE · 中文： 恒星温度 · Meaning: the surface temperature inferred from a star’s light.
Example: Stellar temperature influences both colour and spectrum.
中文例句： 恒星温度会影响颜色和光谱。
90. spectral class
Pronunciation: SPECTRAL CLASS · 中文： 光谱型 · Meaning: a classification of stars based mainly on temperature and spectral features.
Example: The spectral class placed the star within the familiar O-to-M sequence.
中文例句： 光谱型把恒星放入常见的O到M分类序列中。
Contents · Previous group · Next group
10. Stars, planetarium and visitor planning | Words 91–100
91. star formation
Pronunciation: STAR FORMATION · 中文： 恒星形成 · Meaning: the process by which dense gas and dust collapse to form new stars.
Example: The lecture linked nebulae with regions of star formation.
中文例句： 讲座把星云与恒星形成区域联系起来。
92. supernova remnant
Pronunciation: SUPERNOVA REMNANT · 中文： 超新星遗迹 · Meaning: expanding material left after a stellar explosion.
Example: A supernova remnant can glow across several wavelengths.
中文例句： 超新星遗迹可以在多个波段发光。
93. digital planetarium
Pronunciation: DIGITAL PLANETARIUM · 中文： 数字天象厅 · Meaning: a dome theatre using digital projection to simulate the sky.
Example: The digital planetarium previewed constellations before the outdoor session.
中文例句： 数字天象厅在户外观测前预演了星座位置。
94. dome projection
Pronunciation: DOME PROJECTION · 中文： 穹顶投影 · Meaning: an image projected across a curved planetarium dome.
Example: Dome projection surrounded the audience with a simulated night sky.
中文例句： 穹顶投影让模拟夜空包围观众。
95. constellation lecture
Pronunciation: CONSTELLATION LECTURE · 中文： 星座讲座 · Meaning: an educational talk focused on constellations and sky recognition.
Example: The constellation lecture made the outdoor star chart easier to use.
中文例句： 星座讲座让户外使用星图变得更容易。
96. astronomy lecture
Pronunciation: ASTRONOMY LECTURE · 中文： 天文学讲座 · Meaning: an educational talk about astronomical science.
Example: The astronomy lecture explained why telescope images can shimmer.
中文例句： 天文学讲座解释了为什么望远镜图像会抖动。
97. reservation slot
Pronunciation: RESERVATION SLOT · 中文： 预约时段 · Meaning: a specific booked time for entry or a programme.
Example: Our reservation slot began at eight in the evening.
中文例句： 我们的预约时段晚上八点开始。
98. sunset observation
Pronunciation: SUNSET OBSERVATION · 中文： 日落观测 · Meaning: a scheduled activity observing the sky around sunset.
Example: Sunset observation showed how quickly bright stars emerged afterward.
中文例句： 日落观测让我们看到亮星随后多快出现。
99. night-sky programme
Pronunciation: NIGHT-SKY PROGRAMME · 中文： 夜空观测项目 · Meaning: an organized educational programme focused on the night sky.
Example: The night-sky programme combined a lecture with telescope viewing.
中文例句： 夜空观测项目把讲座和望远镜观测结合起来。
100. weather cancellation
Pronunciation: WEATHER CANCELLATION · 中文： 因天气取消 · Meaning: cancellation caused by unsuitable observing weather.
Example: Cloud and rain can lead to weather cancellation even when a booking exists.
中文例句： 即使已经预约，云层和降雨也可能导致因天气取消。
Contents · Previous group · Yeongwol context
Why Yeongwol makes these words useful / 为什么宁越适合学习这些词
Compare the launch-vehicle and satellite vocabulary in the Goheung guide with the observation terms here. A public observatory is a place to understand how optics, coordinates, atmospheric conditions and human night vision work together before any object appears sharp in an eyepiece.
Byeolmaro’s mountain setting also makes observational limitations visible. Cloud cover, atmospheric seeing, transparency and light pollution can matter as much as telescope size. Good astronomy vocabulary therefore includes the sky between the observer and the object, not only the object itself.
Observing questions to ask / 观测时可以问什么
Ask what type of telescope you are using and its aperture. Then ask why that instrument was chosen for the target.
For the Moon, identify the terminator line and one crater rather than trying to memorize the whole lunar surface at once.
For stars and deep-sky objects, compare apparent brightness with what you can see through the telescope. A faint fuzzy galaxy teaches a different lesson from a bright planet.
If clouds cancel telescope viewing, use the planetarium or lecture portion to learn coordinates, constellations and observing technique. A weather cancellation does not have to be a wasted visit.
A short conversation / 简短对话
Visitor: Why does the planet look blurry even though the telescope is large? / 游客：为什么望远镜很大，行星看起来还是有点模糊？
Operator: Atmospheric seeing is unstable tonight, so the image is moving slightly. / 操作员：今晚大气视宁度不稳定，所以图像会轻微抖动。
Visitor: Can we increase the magnification? / 游客：可以再增加放大倍数吗？
Operator: We can, but higher optical magnification will not create detail that the atmosphere is hiding. / 操作员：可以，但更高的光学放大倍数无法凭空产生被大气扰动遮住的细节。
Turn the visit into a paragraph / 把旅行写成一段话
Model paragraph — an imagined visit: At Byeolmaro Observatory, I learned that seeing more does not simply mean magnifying more. The telescope aperture gathered light, the tracking motor kept the target centred, and atmospheric seeing determined how steady the image looked. Saturn’s rings were tiny but unmistakable. Later, the star chart helped me connect the telescope view with the larger celestial sphere. The night became easier to understand because each layer had its own vocabulary.
中文参考： 在别马路天文台，我明白“看得更多”并不只是“放得更大”。望远镜口径负责收集光线，跟踪马达把目标保持在视场中央，而大气视宁度决定图像有多稳定。土星环虽然很小，却清晰可辨。之后，星图帮助我把望远镜中的局部景象与更大的天球联系起来。因为每一层都有自己的词汇，夜空也变得更容易理解。
Continue in the South Korea writing workbook.
Learn, compare and use the words / 学习与练习
Compare carefully: Aperture controls light gathering; focal length helps determine image scale; the eyepiece contributes to optical magnification. Right ascension and declination locate objects on the celestial sphere, while altitude and azimuth locate them in the observer’s local sky.
Build precision: Replace “The sky was clear” with “Cloud cover was low, transparency was good and the Milky Way was visible above the ridge.” Continue that evidence habit with The Fencing Method for Vocabulary.
Recall tomorrow: Sort twenty terms into telescope, coordinates, observing conditions, Moon, planets, deep sky or spectroscopy.
Questions before you go / 出发前的小问题
Do I need a reservation?
VISITKOREA states that advance reservation is required. Check the observatory’s current booking system before travel.
Will I always see Saturn or a galaxy?
No. Targets depend on date, time, season and weather. The operator selects objects appropriate to the actual sky.
Does a larger telescope always mean a sharper image?
No. Aperture gathers more light and can support finer resolution, but atmospheric seeing, focus and other conditions still affect the final view.
Continue learning with eduKate / 继续学习
South Korea travel vocabulary gives the wider country route. Continue through the Vocabulary Lists Control Tower and Vocabulary Articles and Knowledge Hub.
Official visitor information
VISITKOREA: Byeolmaro Observatory
Use the observatory’s current booking information for hours, closures and programme details. Definitions, translations and examples are written for learning.