A new Fabry-Perot spectrometer for observations of diffuse near-infrared line emission

Details A new Fabry-Perot spectrometer for observations of diffuse near-infrared line emission A new Fabry-Perot spectrometer for observations of diffuse near-infrared line emission

Feb 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995pasp..107..184l&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 107, no. 708, p. 184-192

Astronomy and Astrophysics

Astronomy

7

Fabry-Perot Spectrometers, Infrared Spectroscopy, Line Spectra, Near Infrared Radiation, Brightness, Hydrogen, Spectral Resolution

Scientific paper

We describe a new Fabry-Perot spectrometer that is optimized for the detection of extended, low-surface-brightness line emission from 1.4 to 2.4 microns. The instrument combines high throughput and high sensitivity, yet limits the background radiation falling on the detector. The instrument has a single 20 sec - 200 sec beam and a resolving power lambda/delta(lambda) approximately 2500. The system is background shot-noise limited in the K window and limited by a combination of read noise, dark-current shot noise, and fluctuations in the OH airglow lines in the H window. We present sample data of some of the lowest-surface-brightness H2 line emission in the near infrared obtained to date.

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