@article{5893fe387a1a44e18c1816f4f713298a,
title = "Titan: Evidence for seasonal change-A comparison of Hubble space telescope and voyager images",
abstract = "Images of Titan were obtained by the Hubble Space Telescope (HST) on 26 August 1990. Comparison with Voyager 1 and Voyager 2 images obtained 10 and 9 years earlier shows that the seasonal hemispheric brightness asymmetry has reversed near 440 and 550 nm wavelengths, with the northern hemisphere now being brighter. An additional, noisy HST image at 889 nm wavelength, for which there are no analogous Voyager data, suggests that the southern hemisphere may have been brighter than the northern at that wavelength in 1990.",
author = "John Caldwell and Cunningham, {Cindy C.} and David Anthony and {Peter White}, H. and Groth, {E. J.} and H. Hasan and K. Noll and Smith, {P. H.} and Tomasko, {M. G.} and Weaver, {H. A.}",
note = "Funding Information: Based on observations with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA Contract NAS5-26555. We thank J. Swann of the United States Geological Survey in Flagstaff, Arizona for expert assistance in deriving the observational geometry for the Titan images discussed above. This research is supported by NASA Grant NAS5-30294 at York University.",
year = "1992",
month = may,
doi = "10.1016/0019-1035(92)90053-A",
language = "English (US)",
volume = "97",
pages = "1--9",
journal = "Icarus",
issn = "0019-1035",
publisher = "Academic Press Inc.",
number = "1",
}