Omega Centauri

Globular Cluster in Centaurus

Uploaded 7/9/05

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 Debatably the best globular star cluster visible in the Arizona night sky, this huge 1 degree wide super cluster contains more stars than some dwarf galaxies. Beaming strongly on the southern horizon at a magnitude of 3.9, its brightest stars are 11.5 magnitude, most being 15th or fainter. This easy naked eye object is at declination -47.5 degrees, corresponding to a lowly 8.25 degrees above our horizon at its highest.

This image was deficient in the blue channel, due to some atmospheric extinction, and this was the closest I could get to a G2V color balance. An interesting side note, photographs taken in the lower deserts west of Phoenix at 800 foot elevation had no blue component at all, and best efforts could only get a completely yellow cluster out of my film shots.

Instrument: 100 - 400mm f/4L Platform: Astrophysics 1200 QMD Camera: Canon 10D @ ISO800 Exposure: 2 x 8m Filters: None Location: Happy Jack, Arizona Elevation: 6800 ft. Sky: Seeing 10/10, Transparency 8/10 Outside Temperature: 50F Processing Tools: Photoshop CS, PixInsight, Canon Raw HOME GALAXIES EMISSION NEBS REFLECTION NEBS COMETS GLOBULARS OPEN CLUST PLANETARIES LINKS FastCounter by bCentral