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
Original drawing made using white pencil on black paper:
Same drawing on a white background:
April 28th, 2001 11:05 - 11:55 PM, seeing 5, transparency 4.5, with 30% crescent moon in western sky. North is at the top.
Astro-Physics 7.1" f/9 EDT refractor on homemade Dobsonian-style mount. Magnification 135x, 162x, 270x.
M 53 (NGC 5024) is a Globular Cluster located in the constellation of Coma Berenices. Its magnitude is 7.7, diameter of 13', and is approximately 56,000 light years away. It was discovered by Johan Elert Bode in 1775, and observed by Messier on February 26, 1777. It has an irregular shape to it, and is much brighter towards the middle.