その他惑星 ALPO-Japan Latest

Ceres Image 2009/04/02(UT)

David Arditti
D.Arditti

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The forthcoming S@N programme prompted me to process this image of Ceres I took 
near opposition.

I don't think the non-circular shape shown is real. It would be the result of 
seeing combined with the relatively small number of frames stacked (330 frames 
at 2.8 fps.) I should have taken comparison images of nearby stars on the same 
night, but it clouded over. I did feel however that I was imaging a body which 
was clearly not a starlike point. Through the eyepiece it gave the impression of 
a dull, brownish, fuzzy, minute disk shaded off at the edges, a bit like some 
small planetary nebulae appear, but a different colour. Again, it looked like a 
dull disk in the way Neptune does at high magnification, but not the blue 
colour, but brownish.

[David Arditti: Edgware Middlesex HA8 5LW: United Kingdom]

ALPO-Japan Latest Oplanets Section	2009/04/09 [ISS]
	2009/03/27 [STS-119 Space Shuttle Discovery]