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Ground-Based Observations of Cloud Features on Uranus

✍ Scribed by L.A. Sromovsky; J.R. Spencer; K.H. Baines; P.M. Fry


Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
209 KB
Volume
146
Category
Article
ISSN
0019-1035

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✦ Synopsis


NSFCAM observations at 1.7 Β΅m in 1998 and 1999 recorded the first discrete cloud features to appear in ground-based digital images of Uranus and the brightest such feature ever observed. The differential contributions of these northern hemisphere features to Uranus' disk-integrated brightness range from 0.8 Β± 0.2% and 0.11 Β± 0.3% for two 1998 features, to 4.9 Β± 0.7% for one 1999 feature, which is four times the value measured in 1998 NICMOS images at similar wavelengths.


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