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主題: 沙鹿星空 作者: yao 於 2013-07-07 17:45:22 器材:ED 22X70(未來會用25x100,4inchf10refracotor,C11...............)
時間:大部份是前5,6天所觀測;少數是約2星期前 天氣:狀況觀測前下午6點有下10幾分鐘的雨 透明度definetly above avage NELM:about 4?(both eyes not fully correted for near sightness,or else it might just well above 4 a useful tool for me alone,yet it might be meaningful to whoever sees this report.To be a suggestive of more precise,the outline of Ophiuph stars is deemed distinct,inclusive of those more elusive ones,such as nu/omicron/xi.(one of those three only sporadically seen) 銀河:只要和無銀河的中天摩羯座相比,過中天的西下銀河仍易見延伸至天鷹座以上只是無法太清楚的分清濃淡 地點:bortle scale red room 東海與弘光間(近弘光) 120餘公分寬的可見南方天空陽台 無直接光源干擾但有些許側方光 觀測方式:全程不用手電筒 首先是盾牌座的區域此時已過中天2小時.I figure it is of much pleasure to scan through this region by means of nothing but a 22x70,this is a case in point where wide field APOV can truely uncover the grandure of the richichness of this untold beauty-the Scutum,as for all intends and purposes,the aera is littered with cluster,scattered with stars and, if easily seen at all?, riddled with some dark nebulae.這盾牌座的區域我用隨機尋天的方式將明亮的天體一一找出最容易的是 M11它的星星密集區似乎是在西南方至於要分辨形狀似乎很難下一次我看看能不能分解出個別星星或中央的一顆7等亮星 M26:再其次亮度為M26當然比起M11差的多不過因為它剛好是80等還好80等在我看來just a piece of cake(pun intened)梅西爾中段亮度如果你的儀器&地點&經驗這三者加起來你還很難看到這就糟了 NGC6712:這個球狀星團絕對不叫做考驗有時它甚至有比M26還亮的錯覺不小的市視直徑加上不算小的表面亮度 位置亦不難找各位不要忘記它阿 除了這三個容易找且容易看到的深空之外其他有一些憑藉耐心應該有辦法在看到一些只是有一些似有非有的疏散星團還要在確認一次M26:再其次亮度為M26.當然比起M11差的多,不過因為它剛好是8.0等.這8.0等算是一個雙筒鏡觀測的基準意義上就像肉眼極限星等的5.0等這類mark.還好8.0等在我看來just a piece of cake(pun intened).梅西爾中段亮度如果你的儀器&地點&經驗這三者加起來你還很難看到這就糟了 NGC6712:這個球狀星團絕對不叫做考驗.有時它甚至有比M26還亮的錯覺.不小的市視直徑加上不算小的表面亮度,位置亦不難找各位不要忘記它阿 除了這三個容易找且容易看到的深空之外其他有一些憑藉耐心應該有辦法在看到一些只是有一些似有非有的疏散星團還要在確認一次note 1:It seems no denying,in this case,where there are more numerous star than you can count,it is advantageous to uterlize as wide a AFOV as is possible. note 2:Gloublar cluster seems to be more readily made out from background than open cluster on grounds that the former has a more brightness contrast set against background star. note 3:Scanning the the Scutum in a relaxed fashion provide a better/more pleasurous way than purposely searthing for something seeningly significant,such as M11. to be continue & many to come |