Antilhue - Chile

NGC 362
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Image Data

Designation NGC 362,  Bennett 7,  Caldwell 104
Object type Globular cluster
Coordinates 01h 03 min    - 70° 51'   Tucana  (Tuc)
Description NGC 362 is the “other” brilliant globular cluster in Tucana, located on the north-east border of the Small Magellanic Cloud.  It  was discovered by James Dunlop on August 1, 1826 and cataloged by him as No. 62 of his catalog.

In the late 1980s, NGC 362 was compared to the otherwise similar globular NGC 288, and it was found that this cluster was about 3 billion years younger. This because of differences in the color-magnitude diagrams:  the so-called Horizontal Branch of NGC 362 is redder, and the turnoff point of the main sequence (hottest/bluest/most massive main sequence stars) is bluer (and brighter).

Although both bright (mag 6.6) and large (13 arcmin), NGC 362 is often overlooked because it’s in the same area of sky as its brilliant big cousin, 47Tuc (NGC104).  However NGC 362 has a lot of appeal in its own right, as a compact globular cluster easily visible in small scopes.  With large apertures the globular is more resolved, revealing many stars tight to the core.

Click here or on the image to see NGC 362  in higher resolution.  The field of view is  37 x 25 arc minutes.  North is up (0°).

Exposure NRGB 60:20:20:20 min @ -20°C ;  all exposures unbinned, no filter on luminance
Camera SBIG STL-11000 with Astronomik Type 2 filterset  -  selfguided
Optics RCOS 14.5" Ritchey-Chrétien @ f/9 (prime focus)
Mount Astro-Physics AP1200GTO
Software MaxIm DL/CCD,  Sigma Pre Beta 11,  Registar,  Adobe Photoshop CS
Location - Date - Time San Esteban (Chile) - 20Aug2006 @ 09:00 UTC
Conditions Transparency 8-9/10,  Seeing 7/10, Temperature  11 °C