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Fakultät für Physik der Ludwig-Maximilians-Universität

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Wendelstein wide-field imager WWFI design drawing

Wide-Field Imager at the Wendelstein 2-m Telescope (WWFI)

Field of view 26.6 × 29.0 arc min (gaps: 22″, 98″)
Number of pixels 4 × 4096 × 4096
Pixel scale 0.199 arc sec/pixel integrated in a SI 900 camera system by Spectral Instruments, Tucson
Read-out time 8.5 sec at 500 kHz, 40 sec at 100 kHz
Read-out noise  7.8 e at 500 kHz, 2.2 e at 100 kHz
Gain  5.8 e/ADU at 500 kHz, 0.7 e/ADU at 100 kHz
Dynamic range 16 bit
Full well capacity  > 250 ke/pix
Peak QE 0.9
Filter positions 12+2 in 2 wheels
Filters Sloan u′, g′, r′, i′, z
Zero points (SDSS filters) u′: 24.4,  g′: 25.4,  r′: 25.3,  i′: 24.7,  z′: 23.8
Auto guiding 2 off-axis 2k × 2k CCDs
Last updated Jun 23 2016 by U. Hopp (hopp@usm.lmu.de)