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Pac man nebula - Comparison with old images

Discussion in 'Astronomy & Astrophotography' started by Skywatcher, Sep 26, 2009.

  1. Skywatcher
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    Skywatcher Chief Astronomer

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    Well last night was my first chance for some deep sky stuff for absolutely ages and the Pac man was flying high in the sky

    The trick to decent images is collecting loads of extra data and that means longer and more exposures, last year I took this which was 10 3 minute subframes at ISO 1600 (noisy)

    you can tell its pac man shaped if nothing else

    [​IMG]

    Last night I set up early as it was dark by gone 8 and took 4 hours worth of 8 minute subframes at ISO 800 then left the scope taking 4 hours of dark frames ( to remove the noise in the background)

    (looks better if you click to make it big) - I like the star colours the old red giant stars and the young hot blue ones
    [​IMG]

    Close up and processed
    [​IMG]

    Hope you can see the difference between the years

    Oh an cos Mick keeps asking this is what 1 of the pics looks like straight out of the camera pre stacking and pre subtraction of darks and offsets and pre processing
    [​IMG]
     
    Last edited: Sep 27, 2009
  2. Britchick
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    Britchick Cast Member

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  3. Isafari
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    Isafari Wild Animal Expert

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    Magnificent! :worship:
     
  4. keith
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    keith Camera nut Staff Member Administrator Forum Host

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    Never ceases to amaze me
     
  5. Vixynne
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    Vixynne Earning my ears

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    Amazing photos...how far into deep space is the Pac-Man Nebula?
     
  6. foreverducky
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    foreverducky Addicted to Mickey

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    This is awesome! I am always amazed and so grateful that you share your photos with us.
     
  7. piglet
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    piglet Serious Forum Regular

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  8. Skywatcher
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    Skywatcher Chief Astronomer

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    It is 10,000 light years away :D

    Makes my brain go all fuzzy just thinking about that.
     
  9. Vixynne
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    Vixynne Earning my ears

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    So the light entering your camera lens that night left the nebula sometime around 8000 B.C....

    Here's what Wikipedia says was going on at that time in history.



    *brainboggle* [​IMG]

    Makes you wonder what will be going on when the light that left that nebula last night finally arrives within range of stargazers on Earth... [​IMG]
     
  10. Skywatcher
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    Skywatcher Chief Astronomer

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    That exactly he kind of thing I love to think about when I look at these objects - what was happening here when the light left that beautiful object all that time ago.

    I love feeling :mental: about the whole thing :D
     
  11. ukwdwnut
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    ukwdwnut Director of Recruitment Forum Host

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    totally stunning photos chris.....thx for posting :)
     
  12. Skywatcher
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    Skywatcher Chief Astronomer

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    Thank you for your kind comments - I knew you always wanted to know whata raw shot looked like mate :D
     

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