11 July 2008 NEFER: a high resolution scanning Fabry-Perot spectrograph
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Abstract
The scanning Fabry-Perot spectrograph could give highly accurate, kinematical information of star forming regions (HH objects, protoplanetary disks and large scale flows) and the dynamics of isolated and interacting galaxies (resonances, galaxy pairs, compact groups). In this project we are developing a high spectral resolution scanning Fabry-Perot interferometer for the GTC 10 m telescope and the OSIRIS instrument. The system will provide the following characteristics: high spectral resolution data (R up to 20000) over a whole field of view of approximate 8 × 8 arcmin, 0.125 arcsec pixel size in two spectral ranges; 6300 to 7000 Å (galactic projects) and 8000 to 9500 Å (OTELO objects kinematics). ICOS ET100 Fabry-Perot will be used and installed within the OSIRIS collimated beam in the filter wheel hosting the tunable filters. Several acquisition software features have been defined like: synchronizing Fabry-Perot scanning with image acquisition, data cube assembly; single frame or data cube files would be provided according to the observer data reduction process. Fabry-Perot plates parallelism is extremely important to improve Finesse. Our team has developed an algorithm to accomplish this task.
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Margarita Rosado, Abel Bernal, Jordi Cepa, Luis A. Martínez, Arturo Iriarte, "NEFER: a high resolution scanning Fabry-Perot spectrograph", Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70145M (11 July 2008); doi: 10.1117/12.790145; https://doi.org/10.1117/12.790145
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KEYWORDS
Fabry–Perot interferometers

Tunable filters

Kinematics

Galactic astronomy

Spectral resolution

Telescopes

Spectrographs

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