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    Comet 17P/Holmes

    Posted by Daniel Phillips
    on Wednesday, January 21, 2009
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     by Daniel B. Phillips

     

    Scope: Takahashi E-180<o:p></o:p>size: 180mm<o:p></o:p>focal length: 500mm<o:p></o:p>type: corrected Newtonian<o:p></o:p>f~ ratio: 2.8<o:p> </o:p>

    Camera

                type: SBIG ST10 XME<o:p></o:p>

    Image

                type: LRGB<o:p></o:p>exposures: 96 (24X10sec for L,   24X15sec r, g and b)<o:p></o:p>

    on: 11/11/07

    at: Palomar Mountain, California<o:p></o:p>
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