Comet Holmes (17/P)

Some recent images of Comet Holmes (17/P) are below.
A very nice collection of spectroscopic data on the comet by Christian Buil can be found
here.
 
The comet as it appeared on November 16, 2007.

This image was acquired through an 80-mm refractor coupled to a Collins Electro Optics I3 image intensifier at prime focus. The image was recorded with a digital camera in an afocal configuration (i.e., with the camera lens jammed up against the intensfier lens).

The bright star to the lower right of the comet is Mirfak (alpha Persei). The halo around this star is an artifact of the image intensification process

 
Another image of the comet captured on November 16, 2007. The intensfier screen was enlarged with the digital camera zoom.

 

A map with an image of the comet superimposed can be found here. The map was generated with Cartes du Ciel software.

 
 
The comet as it appeared on October 28, 2007 (October 29, 01:30 UT.)

This image was acquired through a 10-inch Newtonian telescope with a Collins Electro Optics I3 image intensifier at prime focus. The image was recorded with a digital camera.

There were three distinct points of light within the coma that were visible through the intensifier, two of which were captured in the image. These appear to be background stars visible through the coma.

 
Another image of the comet captured on October 28, 2007. This image was made on slide film (Fuji Sensia 400).
 
 
This image was acquired on October 28, 2007 using an image intensifier as described above, but with a 2x Barlow lens in front of the intensifier for additional magnification.
 
Another image acquired on slide film, but enlarged to show detail within in the coma.
 
Another intensified image captured on October 28, 2007, enlarged to show detail.
 
 
A map of the region around the comet based on its October 27 position - generated using Cartes du Ciel software.

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