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Averted vision is a technique for viewing faint objects which uses peripheral vision. It involves not looking directly at the object, but looking a little off to the side, while continuing to concentrate on the object. This subject is discussed in the popular astronomy literature but only a few rigorous studies have quantified the effect.

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  • Averted vision is a technique for viewing faint objects which uses peripheral vision. It involves not looking directly at the object, but looking a little off to the side, while continuing to concentrate on the object. This subject is discussed in the popular astronomy literature but only a few rigorous studies have quantified the effect. There is some evidence that the technique has been known since ancient times, as it seems to have been reported by Aristotle while observing the star cluster now known as M41. This technique of being able to see very dim lights over a long distance has also been passed down over hundreds of generations of sailors whose duties included standing lookout watches, making one better able to spot dim lights from other ships or shore locations at night. The technique has also been used in military training. The same technique can be employed with or without a telescope (looking to the side with the naked eye or looking towards the edge of the telescope's field of view). An additional technique called scope rocking may also be used, which is done by simply moving the telescope back and forth slightly to move the object around in the field of view. This technique is based on the fact that the visual system is more sensitive to motion than to static objects. (en)
  • La visione distolta è la tecnica secondo la quale per osservare un oggetto poco luminoso si indirizza lo sguardo lateralmente, mentre si continua a concentrarsi sull'oggetto. Questa tecnica è molto utile in astronomia osservativa, poiché consente di osservare oggetti di luminosità debolissima altrimenti invisibili all'osservazione diretta; secondo alcuni questa tecnica consentirebbe di guadagnare fino a tre-quattro magnitudini. Ci sono alcuni indizi che la visione distolta fosse già in uso in epoche remote, come sembra abbia riferito Aristotele durante la sua osservazione di un ammasso aperto noto oggi come M41. (it)
  • そらし目(そらしめ、英:Averted vision)は、周辺視野を使うことによってかすかな観測対象を見る技術。観測対象への集中を続けている最中に、対象を直接見るのでなく、視点を少しずらして見ることも含む。この問題は、一般向けの天文学の文献で論じられているが、効果の測定が行われた厳密な研究はわずかしかない。しかしながら、この技術は良く知られた眼球の構造上の特徴に基づいている。 (ja)
  • Zerkanie – metoda pozwalająca na obserwacje obiektów o niewielkiej jasności na niebie. Polega ona na patrzeniu na obserwowany obiekt nie bezpośrednio, ale tuż obok niego, tak że nie znajduje się on w centrum pola widzenia. Sposób ten wykorzystuje fakt, że najwrażliwsza na promieniowanie część siatkówki leży poza jej centrum. Odpowiedzialne za dzienne widzenie czopki są najgęściej rozmieszczone w centrum oka, natomiast bardziej czułe na światło, ale z kolei nie rozróżniające barw pręciki otaczają centralne pole siatkówki wypełnione czopkami. To właśnie dzięki większej wrażliwości pręcików na światło, można wykorzystywać zerkanie przy obserwacjach astronomicznych, zarówno okiem nieuzbrojonym, jak i przez teleskop. (pl)
  • 側視是使用查看暗淡物體的一種方法。它包括不直接看物件,看起來有點側向一邊,但仍繼續集中注意於該物件上。在通俗天文學中討論過這個問題,但只有少量嚴謹的研究有量化的效果。然而,這種技術與眼睛的構造特性有關。 宣稱這種技術對天文學家查看大但微弱的星雲和星團最有效。通過技術的發展,有些觀測者報告增益達到3-4個星等(15:1至40:1);但也有報告說沒有明顯的改善。 還有一些從古至今的技術證據,因為亞里斯多德似乎報告曾經觀測到現今被稱為M41的星團。 它也與你是右側視還是左側視有所關聯,最有效的方向是將物件置於視野的鼻骨側,這將避免物件的影像在視野瞬間方向一側約15度的盲點位置成像的可能。所以右眼觀測最好偏向右側,而左眼觀測時則偏向左側。有些人也宣稱以偏向上取代偏向下會有較好的效果。最好的做法是經由實驗,找出自己眼睛的最佳位置。 類似的技術被稱為搖鏡,這是輕微的移動望遠鏡,讓物件在視野的範圍內來來回回的移動。這項技術是基於視覺系統對動態的物體比靜態更敏銳的事實。 (zh)
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  • La visione distolta è la tecnica secondo la quale per osservare un oggetto poco luminoso si indirizza lo sguardo lateralmente, mentre si continua a concentrarsi sull'oggetto. Questa tecnica è molto utile in astronomia osservativa, poiché consente di osservare oggetti di luminosità debolissima altrimenti invisibili all'osservazione diretta; secondo alcuni questa tecnica consentirebbe di guadagnare fino a tre-quattro magnitudini. Ci sono alcuni indizi che la visione distolta fosse già in uso in epoche remote, come sembra abbia riferito Aristotele durante la sua osservazione di un ammasso aperto noto oggi come M41. (it)
  • そらし目(そらしめ、英:Averted vision)は、周辺視野を使うことによってかすかな観測対象を見る技術。観測対象への集中を続けている最中に、対象を直接見るのでなく、視点を少しずらして見ることも含む。この問題は、一般向けの天文学の文献で論じられているが、効果の測定が行われた厳密な研究はわずかしかない。しかしながら、この技術は良く知られた眼球の構造上の特徴に基づいている。 (ja)
  • 側視是使用查看暗淡物體的一種方法。它包括不直接看物件,看起來有點側向一邊,但仍繼續集中注意於該物件上。在通俗天文學中討論過這個問題,但只有少量嚴謹的研究有量化的效果。然而,這種技術與眼睛的構造特性有關。 宣稱這種技術對天文學家查看大但微弱的星雲和星團最有效。通過技術的發展,有些觀測者報告增益達到3-4個星等(15:1至40:1);但也有報告說沒有明顯的改善。 還有一些從古至今的技術證據,因為亞里斯多德似乎報告曾經觀測到現今被稱為M41的星團。 它也與你是右側視還是左側視有所關聯,最有效的方向是將物件置於視野的鼻骨側,這將避免物件的影像在視野瞬間方向一側約15度的盲點位置成像的可能。所以右眼觀測最好偏向右側,而左眼觀測時則偏向左側。有些人也宣稱以偏向上取代偏向下會有較好的效果。最好的做法是經由實驗,找出自己眼睛的最佳位置。 類似的技術被稱為搖鏡,這是輕微的移動望遠鏡,讓物件在視野的範圍內來來回回的移動。這項技術是基於視覺系統對動態的物體比靜態更敏銳的事實。 (zh)
  • Averted vision is a technique for viewing faint objects which uses peripheral vision. It involves not looking directly at the object, but looking a little off to the side, while continuing to concentrate on the object. This subject is discussed in the popular astronomy literature but only a few rigorous studies have quantified the effect. (en)
  • Zerkanie – metoda pozwalająca na obserwacje obiektów o niewielkiej jasności na niebie. Polega ona na patrzeniu na obserwowany obiekt nie bezpośrednio, ale tuż obok niego, tak że nie znajduje się on w centrum pola widzenia. (pl)
rdfs:label
  • Averted vision (en)
  • Visione distolta (it)
  • そらし目 (ja)
  • Zerkanie (pl)
  • 側視 (zh)
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