CATAVIÑA: New infrared camera for OAN-SPM
Por:
Iriarte A., Cruz-González I., Martínez L.A., Tinoco S., Lara G., Ruiz E., Sohn E., Bernal A., Angeles F., Moreno A., Murillo F., Langarica R., Luna E., Salas L., Cajero V.
Publicada:
1 ene 2006
Resumen:
CATAVIÑA is a near-infrared camera system to be operated in conjunction with the existing multi-purpose near-infrared optical bench "CAMALEON" in OAN-SPM. Observing modes include direct imaging, spectroscopy, Fabry-Perot interferometry and polarimetry. This contribution focuses on the optomechanics and detector controller description of CATAVIÑA, which is planned to start operating later in 2006. The camera consists of an 8 inch LN2 dewar containing a 10 filter carousel, a radiation baffle and the detector circuit board mount. The system is based on a Rockwell 1024×1024 HgCdTe (HAWAII-I) FPA, operating in the 1 to 2.5 micron window. The detector controller/readout system was designed and developed at UNAM Instituto de Astronomía. It is based on five Texas Instruments DSK digital signal processor (DSP) modules. One module generates the detector and ADC-system control, while the remaining four are in charge of the acquisition of each of the detector's quadrants. Each DSP has a built-in expanded memory module in order to store more than one image. The detector read-out and signal driver subsystems are mounted onto the dewar in a "back-pack" fashion, each containing four independent pre-amplifiers, converters and signal drivers, that communicate through fiber optics with their respective DSPs. This system has the possibility of programming the offset input voltage and converter gain. The controller software architecture is based on a client/server model. The client sends commands through the TCP/IP protocol and acquires the image. The server consists of a microcomputer with an embedded Linux operating system, which runs the main program that receives the user commands and interacts with the timing and acquisition DSPs. The observer's interface allows for several readout and image processing modes.
Filiaciones:
Iriarte A.:
Instituto de Astronomía, Universidad Nacional Autónoma de México (UNAM), Cd. Universitaria, Apdo. Postal 70-264, 04510 Mexico, D.F., Mexico
Cruz-González I.:
Instituto de Astronomía, Universidad Nacional Autónoma de México (UNAM), Cd. Universitaria, Apdo. Postal 70-264, 04510 Mexico, D.F., Mexico
Martínez L.A.:
Instituto de Astronomía, Universidad Nacional Autónoma de México (UNAM), Cd. Universitaria, Apdo. Postal 70-264, 04510 Mexico, D.F., Mexico
Tinoco S.:
Instituto de Astronomía, Universidad Nacional Autónoma de México (UNAM), Cd. Universitaria, Apdo. Postal 70-264, 04510 Mexico, D.F., Mexico
Lara G.:
Instituto de Astronomía, Universidad Nacional Autónoma de México (UNAM), Cd. Universitaria, Apdo. Postal 70-264, 04510 Mexico, D.F., Mexico
Ruiz E.:
Instituto de Astronomía, Universidad Nacional Autónoma de México (UNAM), Cd. Universitaria, Apdo. Postal 70-264, 04510 Mexico, D.F., Mexico
Sohn E.:
Instituto de Astronomía, Universidad Nacional Autónoma de México (UNAM), Cd. Universitaria, Apdo. Postal 70-264, 04510 Mexico, D.F., Mexico
Bernal A.:
Instituto de Astronomía, Universidad Nacional Autónoma de México (UNAM), Cd. Universitaria, Apdo. Postal 70-264, 04510 Mexico, D.F., Mexico
Angeles F.:
Instituto de Astronomía, Universidad Nacional Autónoma de México (UNAM), Cd. Universitaria, Apdo. Postal 70-264, 04510 Mexico, D.F., Mexico
Moreno A.:
Instituto de Astronomía, Universidad Nacional Autónoma de México (UNAM), Cd. Universitaria, Apdo. Postal 70-264, 04510 Mexico, D.F., Mexico
Murillo F.:
Instituto de Astronomía, Observatorio Astronómico Nacional, Universidad Nacional Autónoma de México (UNAM), Km. 130 Carretera Tijuana-Ensenada, 22860, Ensenada, B.C., Mexico
Langarica R.:
Instituto de Astronomía, Universidad Nacional Autónoma de México (UNAM), Cd. Universitaria, Apdo. Postal 70-264, 04510 Mexico, D.F., Mexico
Luna E.:
Instituto de Astronomía, Observatorio Astronómico Nacional, Universidad Nacional Autónoma de México (UNAM), Km. 130 Carretera Tijuana-Ensenada, 22860, Ensenada, B.C., Mexico
Salas L.:
Instituto de Astronomía, Observatorio Astronómico Nacional, Universidad Nacional Autónoma de México (UNAM), Km. 130 Carretera Tijuana-Ensenada, 22860, Ensenada, B.C., Mexico
Cajero V.:
Instituto de Astronomía, Universidad Nacional Autónoma de México (UNAM), Cd. Universitaria, Apdo. Postal 70-264, 04510 Mexico, D.F., Mexico
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