Horse Head Nebula

Discussion in 'The Gallery' started by =BF=, Oct 23, 2009.

  1. =BF=

    =BF= Member

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    This was shot from a dark sky site near summerset dam west of Brisbane. I used a 102mm Telescope with a Focal Lenght of F6 and captured it with a 6Mp cooled camera. 2 Hours total exposure time. There is problem with reflections inside the camera in this image which is why there is a halo around Alnitak, the bright star. I thought it was worth a look anyway as this sort of stuff is floating over our heads everynight of the week. :)

    [​IMG]
     
    Last edited: Nov 1, 2009
  2. influx

    influx Member

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    love it. astronomy shots are cool.
     
  3. Kevlarman

    Kevlarman Member

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    Very nice! :thumbup:

    How do you keep the camera cool?
     
  4. ][ XpLoiT ][

    ][ XpLoiT ][ Member

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    nice one! :D
     
  5. ZXR

    ZXR Member

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    I'd use a black leather jacket and a pair of sunnies! :p

    Seriously though, I'm also a massive fan of seeing exactly what's up there above our heads. Great shot.

    -ZXR
     
  6. bevanbraves

    bevanbraves Member

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    Great shot.

    Your 102mm telescope beats my 200mm lens.

    Seriously, finding the "co-ordinates" and getting a lens pointed exactly where it needs to be to capture something like this. I guess your using the stars version of a GPS to angle it?
     
  7. Zzapped

    Zzapped Member

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    So this setup is on some sort of tracking mount ?
     
  8. BurningFeetMan

    BurningFeetMan Member

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    Best dust cloud ever that one. Excellent shot. :thumbup: (Everyone knows what I'm talking about, right?)
     
  9. xhanatos

    xhanatos Member

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    vBulletin needs a 'like' button a la facebook.

    Brilliant photo :thumbup:
     
  10. OP
    OP
    =BF=

    =BF= Member

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    It is a dedicated astro camera and has 2 stage tec cooling so it gets to about 40C below ambient.
    Here's some specs :- http://web.aanet.com.au/gama/QHY8.html
     
  11. OP
    OP
    =BF=

    =BF= Member

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    Yes, there are 2 scopes, one for imaging and one feeding back to the mount while tracking a star.
     
  12. Athiril

    Athiril Member

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    Beautiful shot :)

    I sold my telescope cause it sucked and couldnt even use manual tracking controls without vibrating... dodgy celestron powerseeker 127mm.. lol

    I assume youre on motorised? How much did it set you back?

    102mm aperture.

    gives 612mm focal length with an aperture to focal length ratio of f/6 :)
     
  13. OP
    OP
    =BF=

    =BF= Member

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    My current mount is a skywatcher eq6pro which has computerised goto built in and can carry about 25kgs worth of gear. I got it during a price war for $1350 but I just checked at andrews and they up to $1999 now.

    Here's a pic of my older setup with a 8" scope and canon 40D for imaging, don't have a pic of the current setup but it's a lot more compact than this.

    [​IMG]
     
    Last edited: Oct 23, 2009
  14. Opti

    Opti Member

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    I just had to pick my jaw up off the floor:eek: I could sit there for hours looking through a telescope.
    Thats definitely something on my wish list to get.
     
  15. SgtCaboose

    SgtCaboose Member

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    Does the telescope track the stars?

    From what I understand (I have a telescope I play around with) there would be a lot of shift over a 2 hours exposure.
     
  16. Sphinx2000

    Sphinx2000 Member

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    Awesome shot. :thumbup:

    A lot of effort goes in to these I bet.

    Any chance of a 1920x1200 sized copy for wallpaper? ;)
     
  17. dohzer

    dohzer Member

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    Very nice. What's the rough cost for the telescope setup?
     
  18. cbb1935

    cbb1935 Guest

    Wow!!! Stunning shot there.

    2hr exposure time... far out!!

    Silly questions perhaps, but why the need for such a long exposure (I gather to get as much light as possible?), and why the need to cool the camera?
     
  19. OP
    OP
    =BF=

    =BF= Member

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    It's actually made up of 8x5minute shots, 6x10minute shots and 6x3minute shots. You take multiple shots of the same target and stack them in software to reduce noise in the image. A cooled camera also means less noise. I took various length exposures on this one as I knew I'd have trouble with the bright star and was hoping to overlay them in PS to get rid of the halo, but it's reflecting from the camera sensor to the IR filter and back so it's in all the exposures :(

    I used Deep Sky Stacker to combine these and there is a section in the FAQ on the different files used to produce an image.

    As for how much for the rig, how long is a piece of string. Depends on which imaging scope, guide scope, guide camera, imaging camera and mount, plus all the add ons like laptop, power supplies, dew heaters, finder scopes, software and a trailer to drag all the crap out west :) I'd guess $3K 2nd hand would get you going.
     
  20. OP
    OP
    =BF=

    =BF= Member

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    How's this. Could be a bit of noise in the bigger image.
     
    Last edited: Oct 26, 2009

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