Jupiter on 1959 July 19/20 at 21:43 EDT (01:43 UT) as sketched by Milan Ihnat. C.M.(1) 159º, C.M.(2) 192º. 2" refractor at 140x. Seeing very good. Transparency fair. Bands 1, 2, 3 decrease in darkness in that order.
Jupiter on 1959 July 16/17 at 23:41 EDT (03:41 UT) as sketched by Constantine Papacosmos. C.M.(1) 117º, C.M.(2) 173º. 8" Cave reflector at 264x. Seeing 5. Transparency 3.
Jupiter on 1959 July 13/14 at 23:30 EDT (03:30 UT) as sketched by I.K. Williamson. C.M.(1) 357º, C.M.(2) 75º. 80mm refractor at 173x. Seeing 3. Transparency 3.
Jupiter on 1959 June 11/12 (?) at 22:10 EDT (02:10 UT) as sketched by Constantine Papacosmos. C.M.(1) 353º, C.M.(2) 87º. 6½" refractor at 222x. Seeing 3. Transparency 2.
Jupiter on 1959 July 8/9 at 22:10 EDT (02:10 UT) as sketched by Constantine Papacosmos. C.M.(1) 239º, C.M.(2) 356º. 6½" refractor at 222x. Seeing 4. Transparency 3.
Jupiter on 1959 July 8/9 at 21:30 EDT (01:30 UT) as sketched by Donald Bartlett. C.M.(1) 215º, C.M.(2) 332º. 6½" refractor at 222x. Seeing fair. Transparency fair.
Jupiter on 1959 July 8/9 at 21:25 EDT (01:25 UT) as sketched by S. Downing. C.M.(1) 212º, C.M.(2) 329º. 6½" refractor at 222x. Seeing fair. Transparency fair. Telescope vibrates.
Jupiter on 1959 July 7/8 at 23:15 EDT (03:15 UT) as sketched by Constantine Papacosmos. C.M.(1) 121º, C.M.(2) 245º. 8" Cave reflector at 264x. Seeing 4. Transparency 2.
Jupiter on 1959 July 7/8 at 22:00 EDT (02:00 UT) as sketched by I.K. Williamson. C.M.(1) 75º, C.M.(2) 200º. 80mm refractor at 173x. Seeing 2. Transparency 2. Suggestions of ripples in SEB. Definite dark areas in NEB but only visible for fleeting instances due to poor seeing.