Messier 62 or M62 (also designated NGC 6266) is a globular cluster in the constellation Ophiuchus. It has an apparent visual magnitude of 6.5 and its angular diameter is 14.1 arc-minutes. M62 lies at an estimated distance of 22,500 light years. The Equinox 2000 coordinates are RA= 17h 01.2m, Dec= -30° 07´ which makes M62 best seen during the summer. The Messier Summer Star Chart shows the position of all Messier objects visible during that season.
The image above shows the uncropped view of M62 through the Takahashi E-180 Astrograph (North is up). A 3x enlargement of this image appears to the right.
This globular cluster was discovered by Messier in 1771. According to Recio-Blanco et al.(2005), the distance of M62 is 34,930 light years and its diameter is 110 light years. Its estimated mass is one million solar masses and it contains over 200 variable stars.
Messier's Description of M62
June 4, 1779
`Very beautiful nebula, discovered in Scorpio, it resembles a little Comet, the center is brilliant and surrounded by a faint glow. Its position [was] determined, by comparing it with the star Tau of Scorpius. M. Messier had already seen this nebula on June 7, 1771, without having determined the position where it is close to. Reviewed on on March 22, 1781.'
- Object: M62
- Other Names: NGC 6266
- Object Type: globular cluster
- Object Data: Apparent Magnitude = 6.5, Angular Size = 14.1 arc-minutes
- Object Position (Equinox 2000): RA= 17h 01.2m, Dec= -30° 07´, Constellation = Ophiuchus
- Date/Time: 2011 Apr 12 at 09:03 UTC
- Location: Bifrost Astronomical Observatory, Portal, AZ
- Mount: Astro-Physics 1200GTO
- Telescope: Takahashi Epsilon 180 Hyperbolic Astrograph
- Camera: Canon EOS 550D (Rebel T2i) (modified with a Baader UV/IR filter)
- Field of View: 1.70° x 2.56° at 1.7 arc-sec/pixel (web version: 10.0 arc-sec/pixel)
- Exposure: 2 x 300s, f/2.8, ISO 800
- File Name: M62-01w.jpg
- Processing (Adobe Camera Raw): Graduated Filter, Vignetting Correction, Noise Reduction, White Balance, Curves
- Processing (Photoshop CS5): Average Images, Curves, Noise Reduction
- Original Image Size: 3454 × 5179 pixels (17.9 MP); 11.5" x 17.3" @ 300 dpi
- Rights: Copyright 2011 by Fred Espenak. All Rights Reserved. See: Image Licensing.