Widefield Orion's Sword in HaRGB

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The image here is the outcome of an idea that started last week, when I
saw Maurice Toet’s (mftoet) 4 pane Mosaic of Orion’s sword area, and
realised that it matched almost exacty the area I imaged in Hydrogen
Alpha at Kelling Heath a few weeks back. Maurice was kind enough to
provide me with the TIF file of the mosaic, and I set to work in
combining the two sets of data.

Using Registar, PixInsight and CS2, and adding in some Hydrogen Alpha
data as luminance for B33 and NGC2024 from Daz and TJ, the many many
hours of trial and error produced the following image. It was an
absolute joy to work on, and I am not sure it could be improved all that
much without a major rework from scratch. It is one of those images that
require a decently calibrated monitor, as my laptop screen shows it too
light and salmon pink, while my decent screens at home and at work all
show a vibrant Ha red in the background.

I would like to thank Maurice, Darren and Tim for all helping this
project by allowing me to use their data.

I hope you enjoy looking at this image as much as I have enjoyed working
on it!

RGB Mosaic Data
Name: Maurice Toet
OTA: Takahashi FSQ-106ED @ f/5
Imaging: Q453-HR (QHY8)
Mount: Losmandy GM-8
Taken from : Etoile St. Cyrice, Hautes-Alpes, France
Date: January 25 – 26 and 27 – 28, 2009
Web: Astrophotography by Maurice Toet | www.dutchdeepsky.com

Widefield Hydrogen Alpha data
Name: Steve Loughran
OTA: Borg 60 @ f/3.8
Imaging: SXVF M25C
Mount: EQ6
Taken from: Kelling Heath Star Party
Date: September 12th, 2010
Web: Steve’s Astro

RGB M42/M43/NGC1977 data (used as Luminance)
Name: Steve Loughran
OTA: Skywatcher 190 MakNewt @ f/5.3
Imaging: QHY8
Mount: EQ6
Taken from: Cambridge, UK
Date: December 6th, 2008
Web: Steve’s Astro

Horsehead (B33) Hydrogen Alpha data (used as Luminance)
Name: Darren Jehan
OTA: 12″ f/4 newtonian
Imaging: SXVF-H9
Mount: EQ6
Taken from: Kelling Heath Star Party
Date: September 12th, 2010
Web: The Alan Norman Observatory

Flame (NGC2024) Hydrogen Alpha data (used as Luminance)
Name: Tim Jardine
OTA: Celestron C9.25 @ ~f/6
Imaging: SX H9
Mount: EQ6
Taken from: Coventry,UK
Date: December 1st, 2009

s58y, mthomson34, Alberto Monteraz, and 16 other people added this photo to their favorites.

  1. astrometry.net 55 months ago | reply

    Hello, this is the blind astrometry solver. Your results are:
    (RA, Dec) center:(84.533882384, -3.90836015014) degrees
    (RA, Dec) center (H:M:S, D:M:S):(05:38:8.132, -3:54:30.097)
    Orientation:87.75 deg E of N

    Pixel scale:16.49 arcsec/pixel

    Parity:Reverse ("Left-handed")
    Field size :4.69 x 2.87 degrees

    Your field contains:
    The star 42Ori
    The star θ1Ori
    The star θ2Ori
    The star ιOri
    The star 45Ori
    The star σOri
    The star Alnitak (ζOri)
    The star Alnitak (ζOri)
    NGC 1973
    NGC 1981
    NGC 1975
    NGC 1976 / Great Nebula in Orion / M 42
    NGC 1980
    NGC 1977
    NGC 1982 / M 43
    IC 434 / Horsehead nebula
    NGC 2023
    NGC 2024
    IC 435

    View in World Wide Telescope

    If you would like to have other images solved, please submit them to the astrometry group.

  2. Xavier Ambs 55 months ago | reply

    Superbe et très impressionnant
    Bravo pour cette superbe photo !

  3. Erik N Larsen 55 months ago | reply

    A lot of great data for sure including yours and its very well blended which takes some real talent , excellent work Steve.

  4. bd1cu 55 months ago | reply

    Wonderful image!

  5. kappacygni 55 months ago | reply

    Great work steve. Agree with the point about profiling as well. It can be a little dis-heartening to think that many will view such a beautiful image some way different from what was intended, particularly with the reds. Although I am actually viewing on a laptop right now, I recently profiled it up. Viewing in safari as well, so think I am probably seeing it pretty much as was intended !

  6. Pegaso0970 54 months ago | reply

    Stunning image and collaboration.

    Congratulations for tomorrow APOD ... ;-)


  7. Tree&Stone 54 months ago | reply

    Ditto to all of the above! (Even though I am a Flickr member, arrived here from APOD, lol)

  8. Dangerous Dave Astrophotography 54 months ago | reply

    A super collaborative effort, congratulations to all involved.

  9. bradosev 51 months ago | reply

    This has a beautiful feeling of depth to it. Amazing.

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