Images






The brown dwarf CFBDS J005910.83-011401.3
Three-color image of the star field in which the brown dwarf has been discovered. The brown dwarf is the very red object seen at the top left of the image. This image illustrates how very different is the color of this object compared to the other cold stars  around.

Below is a close-up showing the very red brown dwarf and two remote galaxies.


Click on the image on the left for a larger version.
© Canada-France-Brown-Dwarf-Survey 2008




The spectrum of CFBDS J005910.83-011401.3


This spectrum of the brown dwarf from the Gemini-NorthTelescope shows the brightness (flux) as a function of wavelength in the near-infrared. The peak at around 1.58 nm is characteristic of the p[resence of amonia.


Click on the image for a larger version.


© Canada-France-Brown-Dwarf-Survey 2008



CFHT - The telescope with MegaPrime/MegaCam

The Canada-France-Hawaii telescope structure is based on an equatorial mount design, with one of the axis of rotation set parallel to the axis of the Earth¹s rotation. The mirror cell (the white circular structure at the bottom of the telescope, seen just above the person giving the scale on this photograph) holds and protects the most precious element: the 3.6-meter diameter mirror.
Light from distant objects enters the dome through the slit, bounces back from the mirror such that it will focus, and create a crisp image at the prime focus, MegaPrime, where the image is captured by MegaCam, CFHT's wide-field digital camera (340 MegaPixels!) .
By today's standards, the CFHT telescope is a heavy structure compared to the diameter of its mirror: the total mass of the telescope is 325 tons, with 250 tons for the mobile section alone. Yet the telescope can point to any location in the sky with an accuracy of 3 thousandths of a degree - and can follow astronomical objects with an even better accuracy, thanks to an automated guiding mechanism that compensates for the apparent motion of the sky due to the Earth's rotation.

High Resolution image

© Canada-France-Hawaii Telescope Corporation 2006



The MegaCam CCD mosaic

At the focal plane of  MeagCam seen in this photograph, there are 40 CCDs. Each of them, known as the 'e2v 'CCD42-90'',  account for more than 9.5 megapixels. 36 of them are used to image the sky, bringing the total number of pixels for the MegaCam mosaic to a staggering 340 million!

Want to know more about MegaPrime/MegaCam? You can go here (first light of the camera) or here for more technical information.

Various resolution downloads:
[Full scale - 954x805 - JPEG - 84Kb] 
[Scaled 1/2th - 476x402 - JPEG - 19Kb]


© Canada-France-Hawaii Telescope Corporation 2006





Copyright policy and credits related to all press release materials

All images on this page are to be used exclusively for the purpose of media announcements
related to the " Astronomers find most distant black hole (June 2007)" press release.
For any other use, please seek authorization from CFHT's PR officer .