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標題: 全食月和恆星 [打印本頁]

作者: charles    時間: 2009-3-27 11:31     標題: 全食月和恆星

Eclipsed Moon and Stars



影像版權與提供: Johannes Schedler (Panther Observatory)

Explanation:
      Recorded near Wildon, Austria, the picture is a composite of two exposures; a relatively short exposure to feature the lunar surface and a longer exposure to capture background stars in the constellation Leo. Completely immersed in Earth's cone-shaped shadow during the total eclipse phase, the lunar surface is still illuminated by sunlight, reddened and refracted into the dark shadow region by a dusty atmosphere. As a result, familiar details of the Moon's nearside are easy to pick out, including the smooth lunar mare and the large ray crater Tycho. In this telescopic view, the background stars are faint and most would be invisible to the naked eye.

說明:
      影像拍攝的地點在澳地利的Wildon附近,是由二張照片所組合出來的,其中的短曝光影像用來捕捉月面,而較長曝光影像用來記錄獅子座內的背景恆星。在全食階段,當月亮完全沈浸在地球圓錐狀暗影時,月面仍然被陽光照亮,更精確地說是被地球大氣紅化和折射進入暗影區的陽光所照耀。也因此,我們熟悉的月面結構還是不難辨認,其中有平滑的月海和大型的輻射狀第谷隕石坑。在這幅望遠鏡影像裡,大部份的背景恆星都很暗,因此肉眼不得見。

全食月與燈塔

Eclipse with Lighthouse



影像版權與提供: (Chris Cook Photography)

Explanation:
      A red Moon rose over Cape Cod, Massachusetts, USA on March 3rd, immersed in Earth's shadow near the total phase of a lunar eclipse. This serene portrait of the eclipsed Moon in a dark blue twilight sky also features the Highland Lighthouse (aka Cape Cod lighthouse), another more locally familiar beacon in the night. Now automated, the 66 foot tall structure in use today was built in 1857. How often has there been an eclipse within view of the Highland light? For locations on planet Earth there are about two eclipse seasons each year. So, eclipses have actually had many chances to be part of the pictorial history of the Highland Lighthouse, including a total solar eclipse in 1932.

說明:
      2007年3月3日晚,接近全食階段的月亮沈浸在地球暗影裡,造就了一輪紅月高懸在美國.麻州鱈角上空。在這幅靜謐的影像裡,除了暗藍色天空中的全食月外,還有當地著名的地標高地/鱈角燈塔。這座已經自動化的燈塔,高度約有20公尺,建於1857年,至今仍在使用。多常見到日、月食與這座燈塔共舞?地球上的任何地方,平均每年有二個日、月食季,因此,日、月食出現在景色優美的鱈角燈塔上空之機率不低 ,其中包括1932年的日全食。

其他:



composite exposure 5 and 30 sec to show the background stars at 02h24 UT



Pete Lawrence had the nice idea to collect images taken over a big distance at the same time to show the parallax effect. Beside others he has chosen my and Paul Hyndman's image and did nice animations from them.

資料來源: Scientific American
                Astrophotography by Johannes Schedler
                Department of Physics, NCKU






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