Long exposure PRIME FOCUS PHOTOGRAPHY through the main telescope requires a fine guiding motion in declination as well as right ascension. For this purpose I have developed a DUAL-AXIS PLATFORM which provides an approximate declination motion for a large part of the sky, especially near the meridian. The hand control gives a backlash-free fine guiding motion in declination. Also at your fingertips is a fast slew which, together with the right ascension slew, facilitates centering objects and sweeping an area at high power.
1. Cover page 2. Table of Contents 3. Overview 4. Giving Your Big Dob The Ability To Track The Sky... 5. Owners Speak Out... 6. Platform Components 7. Platform Operation - photographic illustrations 8 Astrophotography with an Equatorial Platform 9. More astrophotos using Equatorial Platforms 10. Platform Features 11. Price List