Optimal resolutions for optical and NIR spectroscopy

S. Villanueva Jr.; D. L. DePoy; J. L. Marshall

doi:10.1117/12.926505

24 September 2012 Optimal resolutions for optical and NIR spectroscopy

S. Villanueva Jr., D. L. DePoy, J. L. Marshall

Author Affiliations +

Proceedings Volume 8446, Ground-based and Airborne Instrumentation for Astronomy IV; 84462V (2012) https://doi.org/10.1117/12.926505
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

We study the effects of atmospheric emission lines in the night sky on spectroscopic measurements in the 0.4-2.4 μm range at resolutions 100≤R≤50000 to determine an optimal observing resolution. We build a model of the background sky spectrum at various moon phases and calculate the fraction of pixels free of emission lines in 7 different band passes while varying the resolution. We then discuss the effect of the background emission on the signal-to-noise of constant flux targets to determine an optimal resolution at which to observe. Preliminary results show that the emission lines have little to no effect on the selection of resolution in the optical, but that in the wavelengths ranging from 1.0-2.4 μm the effects of atmospheric emission line suggests observing at a resolution of R>2000 is recommended.

Citation Download Citation

S. Villanueva Jr., D. L. DePoy, and J. L. Marshall "Optimal resolutions for optical and NIR spectroscopy", Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 84462V (24 September 2012); https://doi.org/10.1117/12.926505

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE