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  1. #1
    Dan Chaffee's Avatar
    Dan Chaffee Guest

    Default Recent drawing of Mars




    Seeing has not been good here in Kansas City this summer and brief
    P-5,6 is about as good as it has been for this apparition. Just barely
    enough to be teased with the fangs of Mare Cimmerium...
    This is a colored pencil and graphite drawing that I cut and pasted
    into a simple graphic format. The color is very close to what I see in
    a 10" reflector and a 7" f/18 achromat.

    http://community.webshots.com/user/dechaffee

    Dan Chaffee

  2. #2
    Ron B[ee]'s Avatar
    Ron B[ee] Guest

    Default Recent drawing of Mars

    That was an excellent sketch Dan! But which scope did
    you use? I could see that fangs were indeed captured!
    Nicely done.

    Ron B[ee]
    ---------------
    "Dan Chaffee" <dchaffee@blitz-it.net> wrote in message
    news:3f448160.3611574@news.planetkc.com...



  3. #3
    Richard DeLuca's Avatar
    Richard DeLuca Guest

    Default Recent drawing of Mars

    In article <3f448160.3611574@news.planetkc.com>,
    dchaffee@blitz-it.net (Dan Chaffee) wrote:



    Really nice drawing, Don. I've only been able to see the fangs once (6"
    APO). What interested me the most about your drawing is the color,
    especially the albedo features. When seeing is okay, they look grey
    with hints of blue or green. When the seeing is superior, they look
    clearly just grey.......

    Starry Skies,
    Rich

  4. #4
    Dan Chaffee's Avatar
    Dan Chaffee Guest

    Default Recent drawing of Mars

    Thanks to everyone for their compliments. I hope early Fall
    can afford me with some better nights for drawings that I'll pass along
    to anyone interested.

    Ron: I used both scopes that night, as I often do,
    but the big newtonian (246mm f/7.4 to be exact)was what served up
    the surest details, and what the sketch matches in all regards,
    with the exception of the background being a tad brighter than
    I think the jpeg suggests.
    As a side note, the newtonian is in my observatory, such that the
    entrance pupil is ~20ft above the ground, with big refractor
    on the ground, its entrance pupil being ~10 ft above ground. It *may*
    make a slight difference in local seeing. I'll only know when I
    get around to hoisting the doublet up on/in to the observatory.

    DC

  5. #5
    Sol Robbins's Avatar
    Sol Robbins Guest

    Default Recent drawing of Mars

    Hi Dan,

    Great to see your drawing up on the web. Thanks for your help and
    shared sketches in past.

    Look forward to your future observations, Sol Robbins

 

 

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