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Image of the day 05/15/2019

    Jupiter: 2019-05-05 (UT 19:10 2019-05-04), 


            Darren (DMach)

    Jupiter: 2019-05-05 (UT 19:10 2019-05-04)

    Acquisition type: Lucky imaging

    Technical card

    Date:May 5, 2019

    Time: 03:10

    Frames: 12300

    FPS: 80.00000

    Focal length: 5600

    CMI: 190.10

    CMII: 273.50

    CMIII: 234.00

    Seeing: 4

    Transparency: 8

    Resolution: 474x474

    Locations: Home, Singapore, Singapore

    Data source: Backyard


    Everything came together for one of those special nights over the weekend: the skies were clearer than they had been for some time, seeing was generally good (especially so at the beginning of the session, the data from which you see here) ... and I didn't have to work the next day, so could stay up most of the night. :)

    In total I have nearly an hour's worth (100Gb) of data from that session to process, hoping this may result in a nice animation (edit: the resulting animation can be seen here). The seeing did decrease slightly mid-session but the bigger concern I have is that, as I was getting ready to pack up, I noticed a thin layer of dew on the corrector.

    This has never happened to me before in Singapore - the temperature was likely no lower than 27 deg C! It was extremely humid though, as evidenced by the sweat running down my arms.

    Anyway, one good image at least so, no matter what happens with the rest of the data, it was all worth it.

    This image represents 8 x 90s captures, de-rotated in WinJUPOS. In addition to the good imaging conditions, I had a minor epiphany regarding the implications of WinJUPOS de-rotation (based on some advice from Darryl Milika, AKA "Kokatha man" on Cloudy Nights).

    I have revised my sharpening settings prior to WinJUPOS processing accordingly and feel this gives a crisper image without looking over-sharpened (albeit at the expense of a bit more noise).

    But I've been looking at this data for hours now, so I need some external opinions. Comments & criticism very much welcomed!

    Do also let me know which colour treatment you prefer ... I'm leaning towards Rev A as it brings out the blue in the polar regions better.



    Darren (DMach)
    License: None (All rights reserved)


      Jupiter: 2019-05-05 (UT 19:10 2019-05-04), 


            Darren (DMach)
      Jupiter: 2019-05-05 (UT 19:10 2019-05-04), 


            Darren (DMach)
    • Final
      Jupiter: 2019-05-05 (UT 19:10 2019-05-04), 


            Darren (DMach)


    Description: Slightly "warmer" colour balance


    Description: Revised colour balance based on Photoshop's "auto colour" function - I have minor issues with my blue/green colour perception, so a mathematical method might be the best approach :)


    Jupiter: 2019-05-05 (UT 19:10 2019-05-04), 


            Darren (DMach)