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Eclipsedmoon,strikingnightsky。AtotaleclipseoftheMoonisanimpressivespectacle.Butitalsoprovidesanotherviewingopportunity:adark,moonlight-freestarrysky.AtCerroParanalintheChileanAtacamaDesert,oneofthemostremoteplacesintheworld,thedistancefromsourcesoflightpollutionmakesthenightskyallthemoreremarkableduringatotallunareclipse.Thispanoramaphoto,takenbyESOPhotoAmbassadorYuriBeletsky,showstheviewofthestarryskyfromthesiteofESO’sVeryLargeTelescope(VLT)atCerroParanalduringthetotallunareclipseof21December2010.ThereddishdiscoftheMoonisseenontherightoftheimage,whiletheMilkyWayarchesacrosstheheavensinallitsbeauty.Anotherfaintglowoflightisalsovisible,surroundingthebrilliantplanetVenusinthebottomleftcornerofthepicture.Thisphenomenon,knownaszodiacallight,isproducedbysunlightreflectingoffdustintheplaneoftheplanets.Itissofaintthatit’snormallyobscuredbymoonlightorlightpollution.Duringatotallunareclipse,theEarth’sshadowblocksdirectsunlightfromtheMoon.TheMoonisstillvisible,redincolourbecauseonlylightraysattheredendofthespectrumareabletoreachtheMoonafterbeingredirectedthroughtheEarth’satmosphere(theblueandgreenlightraysarescatteredmuchmorestrongly).InterestinglytheMoon,whichappearsaboveoneofVLT’sUnitTelescopes(UT2),wasbeingobservedbyUT1thatnight.UT1andUT2arealsoknownasAntu(meaningTheSuninMapudungun,oneofChile’snativelanguages)andKueyen(TheMoon),respectively.LinksESOPhotoAmbassadorswebpage月全食是一个令人印象深刻的景象。但它也提供了另一个观看机会:一个黑暗、无月光的星空。在智利阿塔卡马沙漠的塞罗·帕拉纳尔,世界上最偏远的地方之一,在月全食期间,由于远离光污染源,夜空显得格外壮观。这张全景照片由ESO照片大使尤里·贝莱茨基(YuriBeletsky)拍摄,展示了2010年12月21日月全食期间,ESO位于塞罗·巴拉那(CerroParanal)的超大望远镜(VLT)所在地的星空。图中右侧是微红色的月亮圆盘,而银河系则以其美丽的姿态横跨天空。照片左下角的金星周围还可见另一道微弱的光晕。这种现象被称为黄道带光,是由太阳光反射行星平面上的尘埃而产生的。它非常微弱,通常会被月光或光污染所遮蔽。在月全食期间,地球的阴影会阻挡来自月球的直接阳光。月球仍然可见,颜色为红色,因为只有光谱红色一端的光线在穿过地球大气层后才能到达月球(蓝色和绿色光线散射得更强烈)。有趣的是,月亮出现在VLT的一个单位望远镜(UT2)上方,当天晚上UT1正在观测它。UT1和UT2也分别被称为Antu(智利母语马普敦语中的太阳)和Kueyen(月亮)。链接ESO照片大使网页
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