Internet image of Cassiopeia A

Discussion in 'My Astrophotos' started by ROBERT T SCHAEFER JR, Jun 4, 2018.

  1. ROBERT T SCHAEFER JR

    ROBERT T SCHAEFER JR Cyanogen Customer

    Joined:
    May 13, 2018
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    213
    This is Cassiopeia A , it's an image from the Wikipedia Internet jpg images , I worked on it to 'solve' and find it's size .
    I used finally 1582mm F/L and 14 micron sized pixels on the original size image like these , the actual nebula is 6'arc-min x 6'arc-min. .
    'Radiation Astronomy/Nebulas-Wikiversity' in GOOGLE Search has content on colors like the Cat;s Eye Nebula with Hubble about
    how the 630nm band width gets the 'neutral oxygen' ... which sounds like orange color x
     

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