Alec Jones

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Viewing 15 posts - 181 through 195 (of 226 total)
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  • in reply to: Colour Thread Volume 1 #248693
    Alec Jones avatarAlec Jones
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    Cephalopod!

    in reply to: Sunrises And Sunsets Volume I #248587
    Alec Jones avatarAlec Jones
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    DSC_0043

    The millstone grinds sunsetting.

    in reply to: Colour Thread Volume 1 #248451
    Alec Jones avatarAlec Jones
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    DSC_0038

    in reply to: Contrail Thread Volume 1 #248450
    Alec Jones avatarAlec Jones
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    DSC_1233

    Contrail Game #3

    in reply to: Contrail Thread Volume 1 #248394
    Alec Jones avatarAlec Jones
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    Shall we play the #contrail game? The idea is to produce a series of consecutive images with an increasing number of contrails. So we start off with one as shown below. The next person posts an image with two. Then another person posts an image with three and so on. Let’s see how far we can take it?!

    DSC_1236Contrail Game #1

    in reply to: Black & White Thread Volume VII #248324
    Alec Jones avatarAlec Jones
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    DSC_0033

    Spectral War Pig.

    in reply to: Halos And Rainbows Volume I #248188
    Alec Jones avatarAlec Jones
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    DSC_0238

    A simple 22.

    in reply to: Contrail Thread Volume 1 #248187
    Alec Jones avatarAlec Jones
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    DSC_0517

    in reply to: Contrail Thread Volume 1 #248185
    Alec Jones avatarAlec Jones
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    Great pano George! I made several of these a few years ago, I’ll try to dig them out.

    in reply to: Halos And Rainbows Volume I #248183
    Alec Jones avatarAlec Jones
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    Mistakes like this happen when you are in such a mind-warping hurry that you only give something a cursory glance. Elementary mistake, wrapped knuckles and mine’s a pint!

    Middle Lowitz definitely present; you had a good haul to bag all three components. The “splitting” of the arcs on the top right is simple to explain. It’s basically just the Parry and UTA diverging. The UTA will eventually extend to join the upwards tending LTA to produce a circumscribed halo.

    The next step is to try stacking your images. Mount your camera on a tripod and take a series of images over two or three minutes. Try 20 or 30 to begin with and then stack them with freely available software such as Registax. You’ll be amazed at the additional details this technique will provide when combined with b-r.

    https://www.astronomie.be/registax/

     

    in reply to: Sunrises And Sunsets Volume I #248171
    Alec Jones avatarAlec Jones
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    Michael & Hans, beautiful texture and sumptuous tonal palette. Surely the sky must provide the best free show on Earth.

    in reply to: Halos And Rainbows Volume I #247997
    Alec Jones avatarAlec Jones
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    Hans, I can’t believe I have done this but inadvertently I have been leading you a merry dance. You were right the first time, it was indeed an upper Lowitz. I’ve been in such a mad rush these past few days on the run up to Christmas that my wires have become seriously crossed. I am a dolt and a total imbecile for which my sincere apologies. I could promise that “it won’t happen again”, but considering my past track record it probably will!! The following link will hopefully prove useful in trying to identify the various Lowitz components,

    https://www.meteoros.de/themen/halos/haloarten/ee141516/

    Earlier this year, there was a flurry of excitement when Jari Luomanen photographed a possible fourth component,

    http://www.thehalovault.org/2017/04/lunar-display-with-lowitz-arcs-and.html

     

    in reply to: Contrail Thread Volume 1 #247753
    Alec Jones avatarAlec Jones
    Participant

    DSC_0049

    I wish I was a space man,
    The fastest guy alive.
    I’d fly you round the universe,
    In Fireball XL-5.
    Way out in space together,
    Conquerors of the sky,
    My heart would be a fireball,
    A fireball,
    Every time I gazed into your starry eyes.

    Don Spencer, Fireball XL-5

     

    in reply to: Black & White Thread Volume VII #247652
    Alec Jones avatarAlec Jones
    Participant

    DCS_1289

    in reply to: Halos And Rainbows Volume I #247576
    Alec Jones avatarAlec Jones
    Participant

    Hans, your first attempt at b-r wasn’t quite as successful as the second because you performed it on a low resolution image that had already undergone a fair amount of processing and was in all likelihood 8 bit. However, your second attempt is much better, indeed you have managed to capture a real beauty! It’s actually a Middle Lowitz arc and not an Upper Lowitz. Middle Lowitz are also sometimes referred to as circular Lowitz arcs because of their shape. The only other thing I might suggest is try using as wide an angle of lens as you have at your disposal. By zooming in so close you are probably missing a lot of sub-visual halos that might be there. Many of the halo pros use an all sky fisheye lens to capture everything in the sky at once. There can be as much going on in the anthelic region directly opposite the sun than directly around the sun itself.

Viewing 15 posts - 181 through 195 (of 226 total)