Thursday 1 January 2009

Halo displays in the Czech mountains on 26/27 December 2008

On 26 December, diamond dust halos were captured by webcams (Hydronet network) at Lysa hora in Krkonose (Giant Mountains). In addition to the more usual phenomena, there were helic arc, Tape infralateral arc and Wegener arc in the sub-area. The Parry orientation of crystals may indicate possible Hastings arc ( 1 – 2 – 3 – 4 – 5 – 6 – 7 ).

You can see all the photos from the west and south webcams located on Lysa hora at ( 8 ).

On the same day, at the same place Jiri Zujic also made observations. Note the parhelion legs ( 9 ).

One picture from the webcam, placed on Certova hora in Krkonose, shows 120° parhelion ( 10 ).

Martina Durasova observed at Bozi dar in Krusne hory (Ore Mountains) clear phenomena with weak Moilanen arc ( 11 – 12 – 13 )

On 27 December, Jiri Simek also observed diamond dust halos from Lesni bouda in Krkonose ( 14 )

These pictures from Humlnet webcam in Pec pod Snezkou in Krkonose, show a high pillar caused by halogen lamp from passing car ( 15 – <a href=" http://www.ian.cz/redsys/upload/838302-964647.gif">16 )

Happy New Year 2009!

Text: Martin Popek, Monika Pacltova
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16 comments:

  1. Kuba1 January 2009 at 18:01

    Great display! Congratulations!
    Does Hydronet's site have archive of webcams' photos?

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  2. martin popek1 January 2009 at 18:04

    website hydronet

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  3. martin popek1 January 2009 at 18:05

    and website humlnet

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  4. marko riikonen1 January 2009 at 18:09

    The Czech opened their season with some good displays. And it looks like there is almost sub-120 parhelion in (10).

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  5. Milos Zahradnik1 January 2009 at 19:02

    Recent galleries are available on addresses 1-8 like
    http://78.102.13.147/lysa/photo/l2/gallery/index6.html
    http://78.102.13.147/lysa/photo/l3/gallery/index6.html
    Older photographs (up to 5 years) are also stored but not easily available at the moment

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  6. Marko1 January 2009 at 22:02

    There's every year something exciting from Czech ski slopes ! Not bad.

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  7. marko riikonen2 January 2009 at 00:52

    What you folks make of (2)? To me the outer fainter arc looks like 46 supralateral arc. And the brighter one is 46 infra with probably 46 Parry arc bulging in it.

    So, this display had columns. Should make simulations, though.

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  8. Michael2 January 2009 at 02:35

    Yes I have to say the Czech folks get some very nice halo displays. I wonder if anyone has done any halogen lamp displays in the Czech Republic?

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  9. Jari2 January 2009 at 05:48

    Drop dead gorgeous!

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  10. Walt Tape2 January 2009 at 22:42

    Gorgeous!

    Moral: For an aesthetic halo photo, you gotta ditch the blocker and have interesting foreground. And of course start with a lovely display.

    Thanks.

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  11. marko riikonen3 January 2009 at 13:27

    The simulation in the above comment was made with Jukka Ruoskanen's software. Sorry, it is so easy to forget giving this credit.

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  12. Tomas Trzicky3 January 2009 at 16:22

    It is an amazing display indeed as well as the simulation! As for Hydronet's photo (No. 2 in the article), the Sun elevation should be approx. 14 deg.

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  13. marko riikonen3 January 2009 at 18:38

    Ok, thanks. I am probably making not a new simulation, but adding the two degs would increase a bit of a distance between (column) 46 infra and supra and also make their relative intensities more like in the photo.

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  14. marko riikonen4 January 2009 at 14:43

    Excellent work Tomas! That gives much better picture of what's going on.

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  15. Agnes Kiricsi4 January 2009 at 19:19

    Congratulations from me, too :)
    Marko's simulation and Tomas's composite are really fine works!

    ReplyDelete
  16. Angie30 August 2010 at 23:11

    Is it possible to get a copy of you photo or a print?

    ReplyDelete

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