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- W1990635141 abstract "Optical observations from the ground are fraught with three major difficulties: (i) severe restriction of the wavelength range from 3000 to 8000 A; (ii) ‘spreading’ of the telescopic image due to atmospheric motions; (iii) night-sky background. The combination of (ii) and (iii) makes the observation of faint galaxies extremely difficult, although photoelectric techniques allow subtraction of the night-sky contribution to a fair degree, if one is willing to wait long enough. The present situation is that the attack on the problems of cosmology by longrange optical methods has largely lost its momentum, due in a very considerable measure to the above unfavourable factors. It is particularly to be noted that the development of more sensitive detection equipment, of the image-converter type, will not overcome these difficulties. Indeed such developments are likely to throw the limitations of terrestrial ground-based observation into still sharper relief." @default.
- W1990635141 created "2016-06-24" @default.
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- W1990635141 date "1959-12-29" @default.
- W1990635141 modified "2023-09-27" @default.
- W1990635141 title "Astronomical observation with the aid of artificial satellites" @default.
- W1990635141 doi "https://doi.org/10.1098/rspa.1959.0211" @default.
- W1990635141 hasPublicationYear "1959" @default.
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