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- Averted_vision abstract "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 been done quantifying the effect. However, the technique is based on well-known properties regarding the structure of the eye.It is claimed this technique is most useful to astronomers for viewing large but faint nebulae and star clusters. By developing the technique, some observers report a gain of up to three or four magnitudes (15:1 to 40:1). Others report no appreciable improvement.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.It also matters whether you avert right or left. The most effective direction is that which places the object on the nasal side of the vision. This avoids the possibility the object will be imaged on the blind spot at approximately 15 degrees on the temporal side of the line of sight. So, for right-eyed observers it is best to shift to the right, and for left-eye observers it is best to shift to the left. Some people also claim that it is better to avert up instead of down. The best thing to do is practice and find the best location for one's own eyes.A similar technique is called scope rocking, and is done by simply moving the telescope back and forth slightly to move the object around in the field of view. It is based on the fact that the eye has evolved to be more sensitive to motion.".
- Averted_vision wikiPageExternalLink avertedvision.htm.
- Averted_vision wikiPageExternalLink www.avertedvision.net.
- Averted_vision wikiPageID "9426238".
- Averted_vision wikiPageRevisionID "544682134".
- Averted_vision hasPhotoCollection Averted_vision.
- Averted_vision subject Category:Eye.
- Averted_vision subject Category:Observational_astronomy.
- Averted_vision subject Category:Vision.
- Averted_vision comment "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 been done quantifying the effect.".
- Averted_vision label "Averted vision".
- Averted_vision label "Visione distolta".
- Averted_vision label "Zerkanie".
- Averted_vision sameAs Visione_distolta.
- Averted_vision sameAs そらし目.
- Averted_vision sameAs Zerkanie.
- Averted_vision sameAs m.0288gp7.
- Averted_vision sameAs Q4014785.
- Averted_vision sameAs Q4014785.
- Averted_vision wasDerivedFrom Averted_vision?oldid=544682134.
- Averted_vision isPrimaryTopicOf Averted_vision.