Heterodyne Empfänger
N3AR
Der N3AR ist ein Einzelpixel-Heterodyn-Empfänger, der im erweiterted W-Band (67 - 116 GHz, d.h. bei Wellenlänge um 3 mm) arbeitet. Pro Polarisation des elektrischen Feldes und pro Seitenband wird eine Zwischenfrequenz (ZF) generiert ("dual polarization, sideband separating heterodyne receiver").
N3AR ist am Atacama Pathfinder EXperiment Telescop (APEX), unserem 12 m Teleskop in Chile, in the Cassegrain Kabine installiert. Ebenfalls in der Kabine befindet sich unser Kamerasystem A-MKIDS.
Details in Kürze
NFLASH
Das NFLASH Empfängersystem ist ein im Januar 2020 am APEX Teleskop in Chile installiertes hochmodernes heterodyn Spektrometer mit einem Pixel. Das Instrument erlaubt es gleichzeitige in beiden Polarisationsrichtungen sensitive astronomische Beobachtungen in den drei wichtigen Frequenzbändern von 200-270 GHz, 385-510 GHz und 780-950 GHz durchzuführen.
Finished Projects and Developments
GREAT (and its family of receivers)
GREAT is a highly modular instrument platform for heterodyne receivers for high-resolution spectroscopy on board of SOFIA. The Stratospheric Observatory for Infrared Astronomy is a joint project of NASA and DLR.
The upGREAT channels are second generation receivers for the GREAT platform. The receivers are medium-sized arrays, operating closed-cycle coolers.
The 4GREAT channel is the latest addition to GREAT's receiver suite. It comprises four single-pixel receivers, co-aligned on sky, and operating at four different frequency bands.
CHAMP+ is a dual-color heterodyne array for spectroscopy in the 450 and 350 μm atmospheric windows which has been built in collaboration with SRON-G (providing the SIS-mixers) and JPL. The instrument was successfully commissioned on APEX in summer 2007.
Details in Kürze
FLASH is a dual-frequency MPIfR principal investigator (PI) receiver, operating simultaneously - on orthogonal polarizations - in the 345GHz and the 460GHz atmospheric windows. Design and construction of the instrument was launched in late 2003; the receiver has been in continuous operation on APEX since June 2004.
In Summer 99 the division took responsibility (as subsystem manager) for the local oscillator development for HIFI ( Heterodyne Instrument for HERSCHEL – formerly FIRST). HERSCHEL is ESA’s 4th cornerstone in the current Horizon 2000 science program, currently scheduled for launch in August 2008. HIFI is developed by a worldwide consortium of 25 scientific institutes, with the technological challenge to built a space-borne instrument of unique performance.