Thursday, February 19, 2009

Coma asymmetry of comet C/2007 N3 (LULIN)

Few hours ago we imaged C/2007 N3 (LULIN) through a narrowband interferential filter, centered in the dust continuum (647nm, FWHM= 10nm). At these wavelengths, what we see is (nearly) only dust. Some image-processing show a curious asymmetry of the coma, as noticed before in some other comets.

Possible features in (about) PA 40 del and 220 deg became visible, as well:

While here you can see an animation of the comet imaged without filter on 18 February 2009:

by Giovanni Sostero, Ernesto Guido, Paul Camilleri & Virgilio Gonano

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