What's New

Choosing A Telescope

Telescope Aperture Considerations

Astronomical Sketches

Introduction to Planetary Sketching

Visual Observations

Refractor Dobsonian Style Mounts

Equipment Reviews

Favorite Quotes

The Bonds: Pioneers of American Astronomy

Saturn's Encke Minima and Encke Division

Nature and Travel Photography

Astrophotography

Astronomy Humor

Glossary

Recommended Astronomy Books

Links

Home

September 11th, 1988, 6:15 - 6:50 UT, seeing 7, then 6, then 5 (0 worst, 10 best), transparency 2, then 4. Central Meridian 109.88 - 117.19 degrees. Diameter of Mars: 23.71".

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 dark mare surface features have an olive green to brownish green color to them. Solis Lacus seems larger then the last time I observed it on August 6th, even accounting for the fact that Mars is now closer. Mare Erythraeum and Mare Sirenum are prominent.