从猎户座到御夫座

2021年03月22日

From Auriga to Orion
Image Credit & Copyright: Alistair Symon

Explanation: What’s up in the sky from Auriga to Orion? Many of the famous stars and nebulas in this region were captured on 34 separate images, taking over 430 hours of exposure, and digitally combined to reveal the featured image. Starting on the far upper left, toward the constellation of Auriga (the Chariot driver), is the picturesque Flaming Star Nebula (IC 405). Continuing down along the bright arc of our Milky Way Galaxy, from left to right crossing the constellations of the Twins and the Bull, notable appearing nebulas include the Tadpole, Simeis 147, Monkey Head, Jellyfish, Cone and Rosette nebulas. In the upper right quadrant of the image, toward the constellation of Orion (the hunter), you can see Sh2-264, the half-circle of Barnard’s Loop, and the Horsehead and Orion nebulas. Famous stars in and around Orion include, from left to right, orange Betelgeuse (just right of the image center), blue Bellatrix (just above it), the Orion belt stars of Mintaka, Alnilam, and Alnitak, while bright Rigel appears on the far upper right. This stretch of sky won’t be remaining up in the night very long — it will be setting continually earlier in the evening as mid-year approaches.

Tomorrow’s picture: old stones and mars

从猎户座到御夫座
影像提供与版权: Alistair Symon

说明: 从猎户座到御夫座的天区有什么天体？如这幅总曝光时间超过430小时、由34张照片拼接而成的主题影像所示，可见到许多著名的恒星和星云。从左上角的御夫座方向开始，有美丽的烽火恒星云（IC 405）。然后顺着银河系明亮的银河弧，从左到右穿过双子座及金牛座，可见到蝌蚪星云、超新星遗迹Simeis 147、猴头星云、水母星云、锥状星云和和玫瑰（蔷薇）星云。在影像右上4分之1的猎户座方向，可见到Sh2-264星云、巴纳德环的半圆区、马头星云和猎户大星云。在猎户座内及周围的区域里，著名的恒星从左到右为影像中心之右的橙红的参宿四、其上方的泛蓝参宿五、腰带三星（参宿三、参宿二与参宿一），以及出现在右上角的泛蓝参宿七。这片的天区悬在天空的时间不会太长，而且随着时光来到年中，西沉的时间也会越来越早。

明日的图片: old stones and mars