First results from the UBC etch-alignment mosaic CCD

Details First results from the UBC etch-alignment mosaic CCD First results from the UBC etch-alignment mosaic CCD

1997-06-26

arxiv.org/abs/astro-ph/9706267v1

Astronomy and Astrophysics

Astrophysics

11 pages, 6 figs, 3 tables To appear in SPIE Photonics West97 - Electronic Imaging

Scientific paper

First imaging results are obtained with a new CCD mosaic prototype (3K x 3k, 15 \mu m pixels). The CCDs are aligned using an etched socket alignment technique. Three different measurements of the alignment are made using star images, test p attern images, and microscope analysis. The CCDs have an angular misalignement o f less than 30 ppm. The composite device is flat to within \pm 3 \mu m, with rows/columns oriented to within 20 ppm. The use of an existing technology with built in precision reduces many of the difficulties and expenses typically encountered with mosaic detector construction. A new camera being built for the UBC liquid mirror telescope is al so described.

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