Antilhue - Chile

Comet C/2001 Q4
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Image Data

Designation C/2001 Q4 (NEAT)
Object type Comet
Coordinates at exposure time 03h18min  -6427'  (Reticulum) 
Description Still brightening towards its expected maximum of mag 2.5 around May 8th 2004, this fine comet is already a naked eye object and shows a short tail when observing with 7x50 binoculars.  The CCD image above reveals a real extension of the tail of more than 3 degrees as well as an interesting disturbance.  The inset image illustrates the pale green-blue color of the comet head. C/2001 Q4 was only 0.64 AU (astronomical unit = distance from sun to earth) away when these pictures were taken.

The fuzzy object left of center is NGC 1313, a fine barred spiral galaxy. The field of view is 4 wide.

Exposure Lum 4 x 45s  -  RGB 45:45:45s - both @ -18C - 2x2 - unguided
Camera SBIG ST-10XE + SBIG CFW-8 with Astrodon Tru-Balance filter set.
Optics Sun 200mm f/3.5 telephoto lens
Mount Astro-Physics AP1200GTO
Software MaxIm DL/CCD, Sigma Pre Beta 11, Adobe Photoshop 6.0
Location - Date - Time San Esteban (Chile) - 18Apr2004 - 23:38 UTC
Conditions Transparency 7,  Seeing 6, Temperature +13C