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 S4 1999 LINEAR, July 24th, 2000
Comet S4 1999 LINEAR, July 24th, 2000, 2:20-2:40 UT, seeing 4.5, transparency 4.8.
Astro-Physics 7.1" f/9 EDT refractor on homemade Dobsonian-style mount. Magnification 101x-129x, field of view: 0.55 degrees.
Pseudo-nucleus appeared relatively bright and starlike. Front of coma was rounded and wrapped around pseudo-nucleus. Dust tail on left side of comet appeared feathered. Tail length between 1 to 1-1/4 degrees.