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 103P Hartley 2, October 11th, 2010
Original drawing made using lead pencil on white paper:
Same drawing reversed:
Comet 103P Hartley 2, October 11th, 2010, 1:00 - 1:20 UT, seeing 5 (0 worst, 10 best), transparency 5.0. Field of view: 1.3 degrees.
TMB 130mm f/9.25 on an alt-az mount. Magnification 30x - 60x with Baader Planetarium's UHC-S Filter.
The comet has a faint outer coma that shows some mottling or variations in tone. There is an elongated portion near the center of the comet which may be an inner coma. It appears as a small brighter circular feature near the preceding or left hand side of the comet, which fades towards the following or right hand side of the comet.