Choosing A Telescope
Telescope Aperture Considerations
Introduction to Planetary Sketching
Refractor Dobsonian Style Mounts
The Bonds: Pioneers of American Astronomy
Saturn's Encke Minima and Encke Division
Nature and Travel Photography
Recommended Astronomy Books
Comet Halley, March 22, 1986
Original drawing made using white pencil on black paper:
Same drawing on a white background:
Comet Halley, March 22, 1986, 8:30 - 8:55 UT, seeing 7 (0 worst, 10 best), transparency 5.5. Field of view: 1.43 degrees.
Astro-Physics 4" f/6 refractor on Super Polaris mount. Magnification 35x.
Coma and pseudo-nucleus very bright and well defined. Noted faint, almost straight gas tail, with dust tail more feathery.