Jupiter on 1960 July 16/17 at 21:44+17 PST (05:44 UT) as sketched by Jim Low. C.M.(1) 354º, C.M.(2) 136º. 4" reflector at 130x, 167x. Seeing 6/10. Transparency 4/5. North is down. Although the seeing was only 6 at Jupiter's altitude, it was 8 high in the sky. Epsilon Lyr (double-double) was very easy, and I est. that the resolving power at that time was about 0.5", although in theory, my telescope should resolve down to 1.2" only.

Jupiter on 1960 July 14/15 at 20:56+5m PST (04:56 UT) as sketched by Jim Low. C.M.(1) 9º, C.M.(2) 166º. 4" reflector at 130x. Seeing 3/10. Transparency 4/5. North is down.

Jupiter on 1960 July 12/13 at 21:38+6m PST (05:38 UT) as sketched by Jim Low. C.M.(1) 78º, C.M.(2) 101º. 4" reflector at 130x. Seeing 2. Transparency 3. North is down.

Jupiter on 1960 July 8/9 at 21:21+6m PST (05:21 UT) as sketched by Jim Low. C.M.(1) 157º, C.M.(2) 359º. 4" reflector at 130x. Seeing 3/10. Transparency 4 to 5/5. North is down. Note that time zone used is 120th merid. or Pacific Standard.

Jupiter on 1960 June 21/22 at 21:41+9m EST (02:41 UT) as sketched by Jim Low. C.M.(1) 253º, C.M.(2) 226º. 4" reflector at 130x & 167x. Seeing 4-5/10. Transparency 4/5. North is down.

Jupiter on 1960 June 20/21 at 21:45+10m EST (02:45 UT) as sketched by Jim Low. C.M.(1) 97º, C.M.(2) 78º. 4" reflector at 130x. Seeing 2-3/10. Transparency 3/5. North is down. This observation was made only 9h. 29m. from the time when Jupiter is nearest Earth (Jupiter nearest Earth on June 21d. 12h. 14m. UT at 4.238969 A.U.).

Jupiter on 1960 June 18/19 at 00:48+11m EST (05:48 UT) as sketched by Jim Low. C.M.(1) 252º, C.M.(2) 248º. 4" reflector at 130x. Seeing 4/10. Transparency 4/5.

Jupiter on 1960 June 18/19 at 22:20+25m EST (03:20 UT) as sketched by Jim Low. C.M.(1) 162º, C.M.(2) 159º. 4" reflector at 130x, 167x. Seeing 4/10. Transparency 4½/5. North is down. Satellites I, and III were observed to be in conjunction (i.e.—forming a 90º angle with the zones of the planet) at 23h 28m. EST (04h 28m UT), and they were about 20" apart.

Jupiter on 1960 June 12/13 at 00:15+23m EST (05:15 UT) as sketched by Jim Low. C.M.(1) 4º, C.M.(2) 45º. 4" reflector at 130x. Seeing 4/10. Transparency 4½/5. North is down.

Jupiter on 1960 June 12/13 at 22:19+16m EST (03:19 UT) as sketched by Jim Low. C.M.(1) 293º, C.M.(2) 335º. 4" reflector at 130x. Seeing 3/10. Transparency 4/5. North is down. Dark areas on NEB were probably spots, but seeing was not good enough to give the exact size or location.