Comet C/2006 CZ13 (Linear)

Comet C/2007 N3

Comet Lulin

Image Information
Date Imaged	2/28/2009
Location Imaged From	Barking Pumpkin Observatory at Tierra del Sol, CA
Equipment	Telescope: Meade 10" f/6.3 LX200 Mount: Ulti-Wedge Camera: Canon Digital Rebel (modded) Focal Ratio: f/6.3
Exposure Information	30 x 60sec @ ISO 800
A comet is a small body in the solar system that orbits the Sun and (at least occasionally) exhibits a coma (or atmosphere) and/or a tail — both primarily from the effects of solar radiation upon the comet's nucleus, which itself is a minor body composed of rock, dust, and ice. Comets' orbits are constantly changing: their origins are in the outer solar system, and they have a propensity to be highly affected (or perturbed) by relatively close approaches to the major planets. Some are moved into Sun-grazing orbits that destroy the comets when they near the Sun, while others are thrown out of the solar system forever.
Processing: Data was calibrated, aligned and stacked in Images Plus. One set was aligned on the comet and stacked, another set was aligned on the stars and stacked. The two images were then processed in Photoshop. Processing in Photoshop: Trailing stars were removed with the healing brush as was the trailing nucleus in the other stack. Merged the two resulting images using layer masking. Noise touch up with Neat Image.