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Unexpectly captured comet Comet C/2014 Q2 Lovejoy

  1. Jan 3, 2015 #1

    davenn

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    well this was an unexpected bonus from my trip to the centre of Australia last week
    In the early hours ( ~ 3:30- 4:00 AM) of the last day at Uluru ( Ayres Rock) I decided to get up and do a few starfield photos from a dark sky site

    Tonite, going back over my images, I discovered that I captured comet Comet C/2014 Q2 Lovejoy in my pix of the Orion region.
    Yes, that faint blue/green blob ( looks much better in the full sized images than on the severely compressed images for the forum
    Orion - photo1.JPG

    screen dump from Stellarium showing no star in that position
    Orion - Stellarium.JPG

    comet location map showing correct location for the 29th
    comet path.jpg

    my camera settings
    camera settings.JPG


    cheers
    Dave
     
  2. jcsd
  3. Jan 3, 2015 #2

    davenn

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    another showing it a little easier

    Orion - photo3.JPG


    not too bad for 24mm and 10 sec exposure :)
     
  4. Jan 3, 2015 #3

    davenn

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    OK just done a quick and nasty pic tonite ( 3rd Jan) very bright moon to contend with :(

    2015_01_03_2636sm1.JPG



    camera data.JPG
     
  5. Jan 3, 2015 #4
    Wow! Great find!
     
  6. Jan 5, 2015 #5

    Drakkith

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    Nice. I'll have to try to find it if the skies clear up.
     
  7. Jan 5, 2015 #6

    davenn

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    just got to wait a few days for the moon to wane and move out of the region of the comet
    Full moon was 5 Jan

    Dave
     
  8. Jan 7, 2015 #7

    davenn

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    OK time for an update
    the moon has past full by a couple of days and is now much lower in the east
    still using the Canon 5D3 and 70-200mm, f2.8, IS II lens

    first image has the comet in the upper left and the Orion Nebula, M42 in the lower right
    88mm, f2.8, ISO 1000, 10 sec exp

    2015_01_07_2700b.jpg

    second image is 150mm, f2.8, ISO 1000, 15 sec exp

    2015_01_07_2708b.jpg

    give another couple of nights and the moon is not going to be a problem
    I may head out to a darker site away from the horrid city lights and do some more pix with
    telephoto and with telescope

    cheers
    Dave
     
  9. Feb 16, 2015 #8

    Dotini

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    From today's edition of Spaceweather.com:

    MAGNETIC STORM ON COMET LOVEJOY:
    Around the world, observers of bright Comet Lovejoy (C/2014 Q2) are reporting activity in the comet's sinuous blue ion tail. On Feb. 13th, Michael Jäger of Dorfstetten Austriao used a backyard telescope to capture this 'plasma blob' billowing down the tail, away from the comet's core:

    lovejoy_strip.jpg

    This could be a sign that a magnetic storm in underway. Observers of comets frequently witness plasma blobs and 'disconnection events' in response to CMEs and gusts of solar wind. In extreme cases, a comet's tail can be completely torn off.

    The underlying physics is akin to terrestrial geomagnetic storms. When magnetic fields around a comet bump into oppositely-directed magnetic fields in a CME, those fields can link together or "reconnect." The resulting burst of magnetic energy can make waves, blobs, or even ruptures in the comet's tail. When CMEs hit Earth, a similar process takes place in the planet's magnetosphere powering, among other things, the aurora borealis.

    Readers who wish to monitor the effects of space weather on Lovejoy should look toward the constellation Andromeda high in the northern sky after sunset: finder chart. The comet is shining like a 5th magnitude star, barely visible to the unaided eye from dark-sky locations, but an easy target for telescopes and binoculars. For pinpoint guidance of optics, use this ephemeris from the Minor Planet Center.
     
  10. Feb 16, 2015 #9

    davenn

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    NIce one :smile:

    Sometimes "knots/lumps" like that in the tail are also caused by large clumps of material
    coming off the nucleus

    Its long gone from our skies 2 - 3 weeks ago :frown:
    just look forward to the next reasonably bright one

    Dave
     
    Last edited: Feb 16, 2015
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