Publikationsdatum:
2019-08-28
Beschreibung:
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.
Schlagwort(e):
INSTRUMENTATION AND PHOTOGRAPHY
Materialart:
Astronomical Society of the Pacific, Publications (ISSN 0004-6280); 107; 708; p. 184-192
Format:
text
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