Copyright:
Ajay Talwar
(The World at Night)
原文:
It quickly went from obscurity to one of the brighter stars in Sagittarius — but it’s fading. Named Nova Sagittarii 2015 No. 2, the stellar explosion is the brightest nova visible from Earth in over a year. The featured image was captured four days ago from Ranikhet in the Indian Himalayas. Several stars in western Sagittarius make an asterism known as the Teapot, and the nova, indicated by the arrow, now appears like a new emblem on the side of the pot. As of last night, Nova Sag has faded from brighter than visual magnitude 5 to the edge of unaided visibility. Even so, the nova should still be easily findable with binoculars in dark skies before sunrise over the next week. Gallery: Solar Eclipse
中文翻譯:
🌌 Nova Sagittarii 2015 No. 2 快速從默默無聞變成射手座中最亮的星星之一，但現在正逐漸黯淡。這次恆星爆炸是過去一年來地球上最亮的超新星。圖像是在四天前於印度喜馬拉雅山的拉尼克特拍攝的。射手座的西部有幾顆星星形成了名為“茶壺”的星系，而這顆 nova，如箭頭所示，現在像是茶壺側邊的一個新標誌。截至昨晚，Nova Sag 已從亮於視覺星等 5 慢慢黯淡至快達到無助於肉眼可見的邊界。不過，即使如此，在黑暗的天空中，這顆 nova 在接下來的一個星期裡仍然應該容易用望遠鏡找到，特別是在日出之前。
#NovaSagittarii2015 #超新星 #射手座 #茶壺星系 #天文觀察 #夜空奇觀 #星空攝影
來源:NASA每日圖片
