Antilhue - Chile

Gomez's Hamburger
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Image Data

Designation IRAS 18059-3211,  Gomez's Hamburger
Object type Proto-planetary nebula 
Coordinates 18 h 09 min    - 32° 11'   Sagittarius (Sgr)
Description In May 1985, chilean astronomer Arturo Gomez discovered a fuzzy bun-shaped object on a plate taken by the CTIO (Tololo) 1.5 meter telescope.  After some investigation, the object was identified as a proto-planetary nebula, a gas cloud emitted by a Sun-like star just after its central hydrogen fuel has all been fused to helium. Gomez's Hamburger is on its way to becoming a full-fledged planetary nebula in a few thousand years.  A Hubble telescope image can be found here.

The left frame  is  a full 15 x 10 arcminutes field of the ST-10XE camera with north towards the top.  It shows the tiny (3.5 x 5.5 arcsecs) object marked right of center. On the right is a digitally enhanced (deconvolved) detail image which clearly shows the bun-shaped nature of this remarkable little nebula.  The heavily overexposed blooming star to the right shines at mag 10.5 .

Exposure 120 min @ -15°C ;  all exposures 20 min unbinned
Camera SBIG ST-10XE with Astrodon clear filter  -  selfguided
Optics RCOS 14.5" Ritchey-Chrétien @ f/9 (prime focus)
Mount Astro-Physics AP1200GTO
Software MaxIm DL/CCD, CCDSharp,  Adobe Photoshop CS
Location - Date - Time San Esteban (Chile) - 01Jun2005 @ 04:30 UTC
Conditions Transparency 8/10,  Seeing 7/10, Temperature  + 14°C