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  1. #1
    Chris Taylor's Avatar
    Chris Taylor Guest

    Default LPR Filter vs No LPR Filter Image comparison



    I got a 2" Astronomik CLS filter a few days ago from Modern Astronomy (good
    communicative people to deal with). My adapter's not arrived yet but a bit
    of cardboard coupled with a dash of determination saw a suitable
    improvisation.

    Here's a 30 second exposure of the area around Perseus, hovering just above
    London (no prizes for guessing what I was shooting for). The image was shot
    with an autoguided Canon 350D
    http://homepage.ntlworld.com/chris.t...Temp/NoLPR.jpg

    Here's another 30 second exposure with the same setup but including the
    Heath-Robinson adapted CLS Filter
    http://homepage.ntlworld.com/chris.taylor9/Temp/LPR.jpg

    Quite easy to see why images taken over the general direction of London are
    such a joy to attempt.

    Just thought I'd share the results of this first test.

    Regards


    Chris








  2. #2
    Jim's Avatar
    Jim Guest

    Default LPR Filter vs No LPR Filter Image comparison

    Chris Taylor <nothing@nowhere.com> wrote:


    Wow. How is it on purely visual stuff?

    Jim
    --
    Find me at http://www.ursaminorbeta.co.uk AIM/iChatAV: JCAndrew2
    Lost: Stack Pointer. Small reward offered if found.

  3. #3
    Chris Taylor's Avatar
    Chris Taylor Guest

    Default LPR Filter vs No LPR Filter Image comparison


    "Jim" <jim@magrathea.plus.com> wrote in message
    news:1h18z2d.1d3s4lji0vubyN%jim@magrathea.plus.com ...

    I haven't tried it visually as its a 2" filter. I have tried the Celestron
    1.25" LPR filter visually and the results were nowhere near as dramatic. I
    think my problem, photographically, is the incremental increase in the
    effects of light pollution with increased exposure, something that's not
    going to affect the eyeball in the same way.

    Regards


    Chris



  4. #4
    Peter Lynch's Avatar
    Peter Lynch Guest

    Default LPR Filter vs No LPR Filter Image comparison

    I particularly like the way that the filter removed the clouds
    that are apparent in the unfiltered shot :-)

    On 2005-08-13, Chris Taylor <nothing@nowhere.com> wrote:


    --
    .................................................. .........................
    .. never trust a man who, when left alone ...... Pete Lynch .
    .. in a room with a tea cosy ...... Marlow, England .
    .. doesn't try it on (Billy Connolly) .....................................


  5. #5
    Chris Taylor's Avatar
    Chris Taylor Guest

    Default LPR Filter vs No LPR Filter Image comparison



    "Peter Lynch" <pete@scyld.local> wrote in message
    news:slrndfue8i.h7r.pete@scyld.local...

    ;-)

    The first shot was taken while trying to focus, just after midnight. The
    second waited about an hour for the clouds to clear before capturing about
    300 x 30s exposures during the course of the night.

    Now; if I did have a Cloud Pollution Reduction filter....


    Chris



  6. #6
    Tony Pottrell's Avatar
    Tony Pottrell Guest

    Default LPR Filter vs No LPR Filter Image comparison

    I've had the 1.25" (also from Bern @ Mondern Astronomy) for a while now,
    works a treat

    Here's a comparison I did a while back:
    http://www.pyroport.com/astro/lightp...1-04/index.asp

    Tony

    "Chris Taylor" <nothing@nowhere.com> wrote in message
    news:BMqLe.11484$U36.1026@newsfe6-gui.ntli.net...



  7. #7
    Jim's Avatar
    Jim Guest

    Default LPR Filter vs No LPR Filter Image comparison

    Chris Taylor <nothing@nowhere.com> wrote:


    Ok, thanks.

    Jim
    --
    Find me at http://www.ursaminorbeta.co.uk AIM/iChatAV: JCAndrew2
    "The voices that control me from inside my head say I shouldn't kill
    you yet." - Jonathan Coulton, "Skullcrusher Mountain"

 

 

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