Capricornus is a Zodiacal constellation otherwise known as the Sea Goat. It is one of the 48 Greek constellations originally described by the 2nd century astronomer Claudius Ptolemy (Wikipedia). Capricornus remains one of the 88 modern constellations defined by the International Astronomical Union (Wikipedia).
Capricornus (abbrev. = Cap; genitive = Capricorni) covers 414 square degrees or 1.00% of the celestial sphere making it the 40th largest constellation. It contains 81 stars brighter than apparent magnitude 6.5, the brightest star being Deneb Algiedi. See the Capricornus Star Chart for a figure illustrating this constellation including the identification of its brighter stars.
- Object: Capricornus
- Date/Time: 2012 Jun 18 at 10:11 UTC
- Location: Bifrost Astronomical Observatory, Portal, AZ
- Mount: Losmandy G-11 German Equatorial Mount
- Lens: Nikkor AI 35mm f/2
- Camera: Canon EOS 550D (Rebel T2i)
- Field of View: 35.3° x 24.0° at 24.5 arc-sec/pixel (web version: 138 arc-sec/pixel)
- Exposure: 2 x 240s, f/2.8, ISO 800 and 120s, f/2.8, ISO 800 with Cokin A830 Diffusion Filter
- File Name: Cap-01w.jpg
- Processing (Adobe Camera Raw): Vignetting Correction, Noise Reduction, White Balance, Curves
- Processing (Photoshop CS5): Average Images, Curves, opacity (with diffusion image)
- Original Image Size: 3454 × 5179 pixels (17.9 MP); 11.5" x 17.3" @ 300 dpi
- Rights: Copyright 2012 by Fred Espenak. All Rights Reserved. See: Image Licensing.