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September 3rd, 1988, 6:15 - 6:50 UT, seeing 5 (0 worst, 10 best), transparency 4. Central Meridian 138.89 - 147.42 degrees. Diameter of Mars: 22.3".

Astro-Physics 7" f/9 refractor on an Astro-Physics 706 German equatorial mount. Magnification 202x - 234x. Filters used include Yellow (W12), Orange (W23), light Red (W23A), Red (W25) Magenta (W30), Green (W58), Blue (W80A), and Violet (W47).

South is at the top, north at the bottom, preceding on the left, and following on the right.

The South Polar Cap appears smaller in size since my last observation, and is offset towards the preceding limb. Mare Cimmerium, Aeolis, Electris, Eridania, and Mare Chronium are prominent.