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 Hale-Bopp, March 25, 1997
Original drawing made using white pencil on black paper:
Same drawing on a white background:
Comet Hale-Bopp, March 25, 1997, 0:00-1:10 UT, seeing 6, transparency 5.5.
Astro-Physics 7.1" f/9 EDT refractor on homemade Dobsonian-style mount. Magnification 29x (low power view on left, field of view: 1.73 degrees) to 101x-270x (high power view on right, field of view: 0.55 degrees).
Light yellow dust tail and a light blue gas tail. Dust tail appeared multi-threaded. Color of pseudo-nucleus and parabolic hoods is aquamarine. Noted two jets coming off of pseudo-nucleus connecting to inner parabolic hood. This detail was similar to detail recorded by George Phillips Bond in 1858 in Donatiís Comet.