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  1. IRIS2 Data Reduction - Filename meanings

    ... the file,  n  is the first frame number of the group of images which go into making up the mosaic pattern, and  a  is the ... exposure time. For spectroscopy reduction, the raw images (_mraw) have their known bad pixels masked (_bp), then their variance ...

  2. Comet Hale Bopp's Elegant Neckline

    ... in the world capable of producing the deep, wide-field images required. During the first week in January, three wide-angle ... implications for our understanding of comets in general. Images may be viewed at http://www.aao.gov.au/local/www/qap/work/HB2.jpg ...

  3. 'Star Chant' Sky Voyage - Sydney 22 January

    ... pole star. The aural journey is accompanied by animated images from astrophotographer David Malin, formerly of the Anglo-Australian ... been dedicated to capturing those colours accurately. His images, Edwards has written, “present us with an embryonic mythology awaiting ...

  4. Multi-object Spectroscopy

    ... of the J, H or K filters is used for order sorting). The images below show the mask, and the field on the sky it goes with. Orientation ... IRIS2 can easily detect objects at J/K~14 in 10s acquisition images. It is absolutely essential that these fiducial stars be on the same ...

  5. The Anglo-Australian Telescope

    ... IR instruments, the latest of which, IRIS, provides both images and spectra of the sky. New IR instruments are currently under consideration. Infrared images are especially useful for studying the earliest stages of star ...

  6. Aussie astronomers find ‘lost city’ of stars

    ... light levels more than ten times fainter than any previous images of this galaxy. A few billion years ago the outskirts of NGC 300 ...   Researcher contacts at end   Images and more information ...

  7. Australian Gemini Undergraduate Summer studentships - Student Experiences

    ... to atmospheric turbulence so that near diffraction-limited images can be obtained. We were able to sit in during observations for two ... variations in how they respond to light. My task was to use images of photometric standards to produce a magnitude calibration for each ...

  8. AAO launch of Fred Watson's new book Stargazer—The Life and Times of the Telescope

    ... signing copies of his book and Fred with his new book. Images courtesey of Shaun Amy, more images are available . ...

  9. A 2dF night at the Anglo-Australian Telescope: new timelapse

    ... 4 full moons) of the sky. Dr López-Sánchez took the images between September and November 2011, at times when he was working as a ...

  10. IRIS2 Data Reduction - Intro

    ... the _ADD_AUTO_ASTROMETRY_ primitive. Currently, all IRIS2 images are corrected for astrometric distortion (due to the camera optics) ...

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