HR: 1330h
AN: SP43A-08    [Abstracts]
TI: First Light for the Near-Infrared Narrow-Band Tunable Birefringent Filter of the Big Bear Solar Observatory
AU: * Cao, W
EM: wcao@bbso.njit.edu
AF: Big Bear Solar Observatory, 40386 North Shore Lane, Big Bear City, CA 92314 United States
AU: * Cao, W
EM: wcao@bbso.njit.edu
AF: Center for Solar-Terrestrial Research, New Jersey Institute of Technology, 323 Martin Luther King Blvd, Newark, NJ 07102 United States
AU: Hartkorn, K
AF: Center for Solar-Terrestrial Research, New Jersey Institute of Technology, 323 Martin Luther King Blvd, Newark, NJ 07102 United States
AU: Ma, J
AF: Center for Solar-Terrestrial Research, New Jersey Institute of Technology, 323 Martin Luther King Blvd, Newark, NJ 07102 United States
AU: Wang, J
AF: Center for Solar-Terrestrial Research, New Jersey Institute of Technology, 323 Martin Luther King Blvd, Newark, NJ 07102 United States
AU: Xu, Y
AF: Center for Solar-Terrestrial Research, New Jersey Institute of Technology, 323 Martin Luther King Blvd, Newark, NJ 07102 United States
AU: Spirock, T
AF: Big Bear Solar Observatory, 40386 North Shore Lane, Big Bear City, CA 92314 United States
AU: Spirock, T
AF: Center for Solar-Terrestrial Research, New Jersey Institute of Technology, 323 Martin Luther King Blvd, Newark, NJ 07102 United States
AU: Denker, C
AF: Big Bear Solar Observatory, 40386 North Shore Lane, Big Bear City, CA 92314 United States
AU: Denker, C
AF: Center for Solar-Terrestrial Research, New Jersey Institute of Technology, 323 Martin Luther King Blvd, Newark, NJ 07102 United States
AU: Wang, H
AF: Big Bear Solar Observatory, 40386 North Shore Lane, Big Bear City, CA 92314 United States
AU: Wang, H
AF: Center for Solar-Terrestrial Research, New Jersey Institute of Technology, 323 Martin Luther King Blvd, Newark, NJ 07102 United States
AB: A new near-infrared, narrow-band tunable birefringent filter has been developed by BBSO/NJIT. This filter, one of the first Lyot filters in the near-infrared, has a FWHM of about 2.5 ~Å at the design wavelength of 1.5648 μm and is used to observe the deepest levels of the photosphere. New techniques were employed in the design, including liquid crystal retarders to tune the center wavelength in range of ± 100 ~Å. After finishing the calibration and evaluation of the filter at the Evans Facility of the NSO at Sacramento Peak, high spatial resolution filtergrams and imaging spectroscopy observations were carried out at the Dunn Solar Telescope of NSO in December 2004 with the use of the high-order Adaptive Optics System. For some of these observations, the Lyot filter was combined with a Fabry-Perot Etalon to achieve a much higher spectral resolution. We discuss the calibration methods and present some preliminary observation results.
DE: 7594 Instruments and techniques
SC: Solar Physics Division - AAS [SP]
MN: 2005 Joint Assembly