lect10 - UCF Physics: AST 5765/4762: (Advanced)...

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Unformatted text preview: UCF Physics: AST 5765/4762: (Advanced) Astronomical Data Analysis Fall 2008 Lecture Notes: 10. CCD Arrays, Array Corrections 1 Check in: 2:00 — 2:10, 10 min • HW5 coming... • HW1+2 corrections coming... • Homework must run or 50% off per problem • Questions before we start? 2 Array Basics: 2:10 — 2:20, 10 min • Semiconductor chips sensitive to light • 2D array of “wells” (they produce pixels, and are sometimes even called pixels) • Materials used determine wavelength response • 2 types: CCD and CMOS array, for visible and IR (CMOS becoming popular in digicams) • QE 80-95%, near theoretical max. • Quantitative, dimensionally near perfect • Formats vary, good optical CCD now 4k × 4k • Mosaics up to 38k × 38k = 1.4 billion pixels per image! (PAN-STARRS) • Big dynamic range, 12–24 meaningful bits common, 2-4 bytes/pixel • Monochromatic: must take 3 frames with different filters for true color • Pixel size 10–30 μ m • There is a supplemental reading in /home/ast5765/lectures/10/site-ccd.pdf for those interested in more about CCD chips....
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This note was uploaded on 11/09/2009 for the course AST 4762 taught by Professor Harrington during the Fall '09 term at University of Central Florida.

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lect10 - UCF Physics: AST 5765/4762: (Advanced)...

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