Wide field imaging of solar system objects with an 8192 X 8192 CCD mosaic

Details Wide field imaging of solar system objects with an 8192 X 8192 CCD mosaic Wide field imaging of solar system objects with an 8192 X 8192 CCD mosaic

Feb 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995uhi..rept.....h&link_type=abstract

Final Technical Report, 1 Mar. 1993 - 28 Feb. 1995 Hawaii Univ., Honolulu, HI. Inst. for Astronomy.

Physics

Optics

Ccd Cameras, Charge Coupled Devices, High Speed, Imaging Techniques, Mosaics, Solar System, Chains, Fiber Optics, Readout, Telescopes, Workstations

Scientific paper

As part of this program, we successfully completed the construction of the world's largest CCD camera, an 8192 x 8192 CCD mosaic. The system employs 8 2K x 4K 3-edge buttable CCDs arranged in a 2 x 4 chip mosaic. The focal plane has small gaps (less than 1 mm) between mosaic elements and measures over 120 mm x 120 mm. The initial set of frontside illuminated CCDs were developed with Loral-Fairchild in a custom foundry run. The initial lots yielded of order 20 to 25 functional devices, of which we selected the best eight for inclusion for the camera. We have designed a custom 3-edge-buttable package that ensures the CCD dies are mounted flat to plus or minus 10 microns over the entire area of the mosaic. The mosaic camera system consists of eight separate readout signal chains controlled by two independent DSP microcontrollers. These are in turn interfaced to a Sun Sparc-10 workstation through two high speed fiber optic interfaces. The system saw first-light on the Canada-France-Hawaii Telescope on Mauna Kea in March 1995. First-light on the University of Hawaii 2.2-M Telescope on Mauna Kea was in July 1995. Both runs were quite successful. A sample of some of the early science from the first light run is reported in the publication, 'Observations of Weak Lensing in Clusters with an 8192 x 8192 CCD Mosaic Camera'.

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