Re: re: Admin: policy for reporting high resolutionground-basedimageryofEarth satellites

From: Ralf Vandebergh (ralf.vandebergh@home.nl)
Date: Sat Aug 14 2010 - 21:17:08 UTC

  • Next message: Ted Molczan: "RE: Admin: policy for reporting high resolution ground-based imagery of Earth satellites"

    Hi Geoff,
    
    All of my images are taken using an Orionoptics (UK) 25 cm f/4.8 Newtonian telescope, a light constructional instrument
    which I have found very suitable to swing around, but frankly I purchased the instrument for planetary observations in
    2004. You can find several of my observations of spots and other structures within the Saturn atmosphere on this site:
    http://saturnreport.startje.be/vieuw.php?qid=258555
    
    The instrument itself including the setup is visible on this picture:
    http://www.mikesalway.com.au/wp-content/uploads//2009/07/ralf_setup_01.jpg
    
    The used camera is an ATIK instruments ATK-2C color camera, but this is an older camera with framerate up to
    maximal 10fr/s. The newer camera's like DMK obtain a higher frame-rate. I'm working still with the oldie
    because I have standardized my technique and all works fine, and at this way I keep room for improvement.
    
    It's very recommendable to start imaging the ISS as this is the largest artificial structure in orbit and gives
    a lot of satisfaction. To my own experience, only try on smaller satellites when you are able to obtain
    clear shape in the main modules of the ISS, this is a good test, as these modules are not much larger
    then the bigger satellites in the lower orbits. It can take quite some time before you are on the level
    to photograph detail in satellites. Before I shot my first smaller satellite, I imaged for a duration of 3 years
    only the ISS and the Shuttle. Only when I succeeded to capture just undocked Progress spacecraft,
    in size comparable to a satellite and found clear recognizable structure in them, I knew I was at the
    level to try on general satellites.
    
    Best wishes,
    Ralf
      ----- Original Message ----- 
      From: Geoffrey Forden 
      To: Ralf Vandebergh 
      Cc: seesat-l@satobs.org 
      Sent: Saturday, August 14, 2010 8:41 PM
      Subject: Re: re: Admin: policy for reporting high resolutionground-basedimageryofEarth satellites
    
    
      Hi Rapt
        I am very interested in attempting to photograph sats myself. (Partly aided by having just moved to New Mexico with its clear skies )  I'm so interested in equipment to purchase that I have been searching the internet and would be delighted to know your set up
      Thanks! 
      Geoff Forden 
    
    
        On Aug 14, 2010 10:27 AM, "Ralf Vandebergh" <ralf.vandebergh@home.nl> wrote:
    
        Hi Greg, list,
    
        Frankly, this is the way of communication I'm looking for. This is showing some
        appreciation and that's the way we should communicate, instead of not reply
        on the observations but get suspicious about imagery without asking about things
        I hate feeling not fully been accepted to the list but at the same time have to
        function as the teacher. Setting up a policy while there is just one person posting?
    
        I fully agree with you about the 'black magic' problem. The reason that I mention
        not much about hardware or software is mainly because nobody is asking!
        When posting an observation to a satellite observations list, I try to provide
        what is interesting for most of the observers, namely images of an object
        which they would like to see in higher resolution. So when there is interest,
        simply show it rather then sitting down and getting suspicious.
    
        Additionally, to add something to the matter providing rawframes;
        When anyone can apply their processing on it, while most preople
        haven't the experience imaging and processing high res satellite images,
        why would their own processing be more reliable then the original
        result provided by the experienced imager itself? Sorry when this sounds
        a little arrogantly but it's true.
    
        Often, I try to show a rawframe together with the processed image,
        and with processing is mostly meant, combining more frames to
        get better signal to noise ratio. That this not always leads to better
        images is proved in this observation:
    
        http://tinyurl.com/349c2mm
    
        This message would get to long when explaining the whole technique, but
        when there is sufficient interest from people, seriously interested in
        this matterm, I will consider to provide a manual to the list.
    
    
        Best regards,
        Ralf Vandebergh
    
        http://ralfvandebergh.startje.be/vieuw.php?qid=303316
    
    
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