Antilhue - Chile

NGC 7293  -  Helix Nebula
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Image Data

Designation NGC 7293, Helix Nebula,  Bennett 129
Object type Planetary nebula
Coordinates 22 h 30 min    - 20° 47'  (Aqr)
Description This remarkable object is the nearest and largest (15'x12') planetary nebula as seen through amateur instruments.  The blue central star is mag 13.6 and only 500 lightyears away.  Field of view is approx. 36 x 24 arcminutes with north towards the one o'clock position.   Click on the image above for a higher resolution version.

Here is an earlier version, taken through a 6" refractor.

Exposure (L+N)RGB (120+200):40:40:40 min @ -25°C, N = no filter
Camera SBIG STL-11000 with Astronomik Type II LRGB Filterset,  selfguided
Optics RCOS 14.5" Ritchey-Chrétien  @ f/9 (prime focus)
Mount Astro-Physics AP1200GTO
Software MaxIm DL/CCD,  Sigma Pre Beta 11,  Adobe Photoshop CS
Location - Date - Time San Esteban (Chile) - LRGB 21Aug2004 - 05:00 UTC resp. N 4-5Oct2005 - 02:00 UTC
Conditions Transparency 6/10,  Seeing 5/10 resp 7/10, Temperature + 2°C