Comet 17P/Holmes on 11.04.2007
 
 

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You can see the growing ion tail with more contrast as seen from the blue channel.


Image details: 

 
 - instrument:
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 TMB 130/780 apochromat with field flattener 
modified Canon EOS 350D (Baader filter inside)
Synta EQ6 + Boxdörfer DynoStar, 
72/500 refractor, SBIG St-4
15x5min at ISO800
Mount Pilis (near to Budapest), Hungary;  11.04.2007
transparency: 7/10, seeing: 2/10, temp.: +3°C
Iris, Registar, Photoshop Neat Image
© Copyright Éder Iván 2007