Physics – Optics
Scientific paper
Jul 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3355..253g&link_type=abstract
Proc. SPIE Vol. 3355, p. 253-263, Optical Astronomical Instrumentation, Sandro D'Odorico; Ed.
Physics
Optics
5
Scientific paper
We report on first astronomical results with a cross-dispersed optical echelle spectrograph fed by a near single-mode fiber. We also present on a novel design of a new adaptive optics (AO) optimized fiber-fed cross-dispersed echelle spectrograph. The spectrograph is designed to match with AO corrected images in the optical bands provided by such as the Mt. Wilson 100 inch, Starfire Optical Range 3.5 m AO telescopes. Ultimately, it will be installed at the 6.5 m MMT, when this has high resolution AO correcting the optical spectrum. The spectrograph, fed by a 10 micron fused silica fiber, is unique in that the entire spectrum from 0.4 micron to 1.0 micron will be almost completely covered at resolution 200,000 in one exposure. The detector is a 2k X 4k AR coated back illuminated CCD with 15 micron pixel size. The close order spacing allowed by the sharp AO image makes the full cover possible. A 250 X 125 mm(superscript 2) Milton Roy R2 echelle grating with 23.2 grooves mm(superscript -1) and a blaze angle of 63.5 deg provides main dispersion. A double pass BK7 prism with 21 deg wedge angle provides cross dispersion, covering the spectrum from order 193 to 77. The spectrograph is used in the quasi- Littrow configuration with an off-axis Maksutov collimator/camera. The fiber feeds the AO corrected beams from the telescope Cassegrain focus to the spectrograph, which is set up on an optical bench. The spectrograph will be used mainly to study line profiles of solar type stars, to explore problems of indirect detection of planets and also study interstellar medium, circumstellar medium and metal abundance and isotopic ratios of extremely metal-poor stars.
Angel James Roger P.
Ge Jian
Shelton Christopher J.
No associations
LandOfFree
Optical spectroscopy with a near-single-mode fiber-feed and adaptive optics does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Optical spectroscopy with a near-single-mode fiber-feed and adaptive optics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical spectroscopy with a near-single-mode fiber-feed and adaptive optics will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1176076