Caption: The constellation Crux (commonly known as the Southern Cross or Crux Australis) showing its bright stars and surrounding constellations. The Southern Cross is surrounding by (going clockwise from the top) Centaurus, Carina and Musca. The brightest star is alpha Crucis which appears at the bottom of the constellation's famous kite shape. The Southern Cross is visible from southern and equatorial regions of the world. In more southerly parts of the world it is circumpolar so is always above the horizon. In other parts of the southern hemisphere and in equatorial regions it is most visible in the evenings in the southern hemisphere autumn. The yellow circles show the locations of two open clusters, NGC 4755 (known as the Jewel Box) and NGC 4609. The line joining gamma and alpha Crucis (the third and first brightest stars in the Southern Cross) points in the approximate direction of the South Celestial Pole. This has led to the Southern Cross playing an important role in celestial navigation, allowing navigators from different astronomical traditions to find their bearings. The y-axis of this diagram is in degrees of declination with north as up and the x-axis is in hours of right ascension with east to the left. The sizes of the stars marked here relate to the star's apparent magnitude, a measure of its apparent brightness. The larger dots represent brighter stars. The Greek letters mark the brightest stars in the constellation. These are ranked by brightness with the brightest star being labeled alpha, the second brightest beta, etc., although this ordering is not always followed exactly. The dotted boundary lines mark the IAU's boundaries of the constellations and the solid green lines mark one of the common forms used to represent the figures of the constellations. Neither the constellation boundaries, nor the lines joining the stars appear on the sky.
Credit: Adapted by the IAU Office of Astronomy for Education from the original by IAU/Sky & Telescope.

Caption: 獵戶座及其明亮的恆星和周圍的星座。獵戶座被金牛座、波江座、天兔座、麒麟座和雙子座環繞（從上往下順時針依次排列）。獵戶座最亮的恆星參宿四和參宿七分別位於星座的北端（圖中上部）和南端（圖中下部），中間是著名的三星 "腰帶"。 獵戶座橫跨天赤道，因此在一年中的某些時候，從地球上的任何地方都能看到它。在世界上最北極或最南極地區，可能看不到獵戶座的某些部分。獵戶座在北半球冬季和南半球夏季的晚上最為明顯。獵戶座上方的藍線標誌著黃道，即太陽在一年中劃過天空的軌跡。太陽從不經過獵戶座，但人們偶爾會在獵戶座發現太陽系的其他行星和月球。 在獵戶座腰帶的正南方，有兩個梅西葉天體M42（獵戶座星雲）和M43，用綠色方框標出。這些星雲和M78（腰帶左邊的綠色方框）是巨大的獵戶座分子雲團的一部分。它覆蓋了獵戶座的大部分區域，包括這些分子雲正在坍縮形成新星的區域。 該圖的 y 軸表示赤緯，單位為度數，以北為上，x 軸表示赤經，單位為小時，以東為左。這裡標注的恆星大小與恆星的視星等有關，視星等是衡量恆星視亮度的標準。較大的點代表較亮的恆星。希臘字母表示星座中的亮星。這些恆星按亮度排序，最亮的恆星被標記為α星，第二亮的為β星，等等，不過並不總是完全遵循這種排序。圍繞著參宿四的圓圈表示它是一顆變星。虛線是國際天文學聯合會劃定的星座邊界，綠色實線是表示星座的常用形式之一。星座邊界和連接恆星的線條都不會出現在實際天空中。
Credit: 由國際天文學聯合會天文教育辦公室根據國際天文學聯合會/《天空與望遠鏡》的原文改編

Caption: 天秤座及其明亮恆星與周邊星座示意圖。從頂部開始沿順時針方向，天秤座周邊的星座依次為：巨蛇頭、室女座、長蛇座、半人馬座、豺狼座、天蠍座和蛇夫座。天秤座位於黃道上。從地球看來，太陽以一年為週期在天球上移動，所經過的路徑稱為黃道，在圖中以藍色實線標注。太陽在每年十月下旬到十一月下旬位於天秤座。太陽系中的其他行星也經常出現在天秤座。 天秤座位於天赤道以南，因此在地球上，除了北極地區以外，一年中的某些時候都能看到它。天秤座在北半球春末夏初和南半球秋末冬初的夜晚最適宜觀測。 該圖的縱軸為赤緯，橫軸為赤經，方向為上北下南左東右西。圖中標注的恆星大小對應其視星等——衡量天體視亮度的標準，較大的圓點代表著較亮的恆星。圖中的希臘字母標注著星座中最亮的恆星。這些恆星按亮度排序，最亮的一般被標記為α星，第二亮的一般為β星，等等，不過這種字母排序並不總是和實際亮度排序完全一致。圖中虛線標注的是國際天文學聯合會劃定的星座邊界，綠色實線則是一種常見的星座形象連線。需要注意的是，在實際觀測時，這些邊界與連線都不會出現在天空中。
Credit: 國際天文學聯合會天文教育辦公室（IAU OAE）根據國際天文學聯合會和《天空與望遠鏡》的原文改編

Caption: 天蠍座及其明亮恆星與周邊星座示意圖。從頂部開始沿順時針方向，天秤座周邊的星座依次為：蛇夫座、巨蛇頭、天秤座、豺狼座、矩尺座、天壇座、南冕座和人馬座。天蠍座最亮的恆星是心宿二，位於天蠍座的中心，其東南方（左下方）是著名的天蠍尾。天蠍座位於黃道上。從地球看來，太陽以一年為週期在天球上移動，所經過的路徑稱為黃道，在圖中以藍色實線標注。太陽只在每年十一月下旬的很短一段時間內位於天蠍座。太陽系中的其他行星也經常出現在天蠍座。 天蠍座位於天赤道以南。北極地區無法看到整個天蠍座，亞洲、歐洲和北美洲北部地區的觀測者也無法看到天蠍座的部分區域。天蠍座在北半球的夏季和南半球的冬季夜晚最適宜觀測。 疏散星團M6、M7和NGC 6231在圖中均以黃色圓圈標注，球狀星團M4和M80在圖中均以疊加了十字符號的黃色圓圈標注。 該圖的縱軸為赤緯，橫軸為赤經，方向為上北下南左東右西。圖中標注的恆星大小對應其視星等——衡量天體視亮度的標準，較大的圓點代表著較亮的恆星。圖中的希臘字母標注著星座中最亮的恆星。這些恆星按亮度排序，最亮的一般被標記為α星，第二亮的一般為β星，等等，不過這種字母排序並不總是和實際亮度排序完全一致。圖中虛線標注的是國際天文學聯合會劃定的星座邊界，綠色實線則是一種常見的星座形象連線。需要注意的是，在實際觀測時，這些邊界與連線都不會出現在天空中。
Credit: 國際天文學聯合會天文教育辦公室（IAU OAE）根據國際天文學聯合會和《天空與望遠鏡》的原文改編

Caption: The constellation Sagittarius along with its bright stars and surrounding constellations. Sagittarius is surrounded by (going clockwise from the top) Aquila, Scutum, Serpens Cauda, Ophiuchus, Scorpius, Corona Australis, Telescopium, Microscopium and Capricornus. The brighter stars in Sagittarius form a distinctive teapot shape. Sagittarius lies on the ecliptic (shown here as a blue line), this is the path the Sun appears to take across the sky over the course of a year. The Sun is in Sagittarius from mid December to mid January. The other planets of the Solar System can often be found in Sagittarius. Sagittarius lies south of the celestial equator. The famous teapot asterism is visible for all but the most arctic regions of the world but the most southerly parts of the constellation are not visible in northern parts of Asia, Europe and North America. Sagittarius is most visible in the evenings in the northern hemisphere summer and southern hemisphere winter. The supermassive black hole Sagittarius A* which lies at the center of our Milky Way Galaxy is sits on the western (here right-hand) edge of Sagittarius. Due to it covering an area at the center of our Galaxy, Sagittarius is home to many star clusters including open clusters (marked here with yellow circles) and globular clusters (marked here with yellow circles with + signs superimposed on them). Three nebulae are also marked here with green squares. The y-axis of this diagram is in degrees of declination with north as up and the x-axis is in hours of right ascension with east to the left. The sizes of the stars marked here relate to the star's apparent magnitude, a measure of its apparent brightness. The larger dots represent brighter stars. The Greek letters mark the brightest stars in the constellation. These are ranked by brightness with the brightest star being labeled alpha, the second brightest beta, etc., although this ordering is not always followed exactly. The dotted boundary lines mark the IAU's boundaries of the constellations and the solid green lines mark one of the common forms used to represent the figures of the constellations. Neither the constellation boundaries, nor the line marking the ecliptic, nor the lines joining the stars appear on the sky.
Credit: Adapted by the IAU Office of Astronomy for Education from the original by IAU/Sky & Telescope