 Large APEX Bolometer Camera Bolometer Development Group Millimeter & Submillimeter Astronomy Group Max-Planck-Institut für Radioastronomie (MPIfR)
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Spectral Response LABOCA is
designed for observations in the submillimetric atmospheric window at
870 micron (345 GHz).
Bolometers are broad band detectors and a set of filters is needed to define the passband of LABOCA. Moreover, the circular wave guides embedded in the conical horn antennas act as high-pass filters providing a well defined cut-off at the low frequency side of the passband. The plot below shows the actual passband of LABOCA (transmission normalized to the maximum).  Spectral
response of LABOCA
For comparison,
the graph below shows the spectral response of channel 1 of the MPIfR
870 micron 19-element bolometer array (used for observations at the HHT
between 2000 and 2003) and the SCUBA spectral response (data publicly
available on the JCMT website). Both receivers
where operated in the same atmospheric window as LABOCA.
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| web: gsiringo (at) mpifr-bonn.mpg.de | last edit: G. Siringo, MPIfR - August 2007 |