Design, fabrication, assembly, and testing of the Florida image slicer for infrared cosmology and astrophysics (FISICA) integral field unit

Glenn, Paul; Hull-Allen, C. G.; Hoffman, Jeff; Rodgers, Michael; Thompson, Kevin P.; Myrick, Bruce; Comstock, Lovell E.; Flint, Scott; Boreman, Glenn D.; Eikenberry, S. S.; Elston, R.; Guzmán, R.; Julian, Jeff; Raines, S. N.

doi:10.1117/12.551661

Cited by 6 publications

(5 citation statements)

References 2 publications

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“…This removes the onus of aligning some 84 mirrors in 14 separate arrays onto a single bench (note that this does not include the probe aft system with its additional 12 lens doublets and 48 mirrors!). Each mirror array is machined out of RSA-6061 aluminum, with the optics being plated with electroless nickel, diamond-turned, and then gold-coated (as in FISICA [6][7][8] and FRIDA 9,10 ). The optical mounts are also designed with precision location pinholes and bolt holes for mounting to the IFU bench.…”

Section: Radiusmentioning

confidence: 99%

Optical and Opto-Mechanical Design of a Novel "Macro" Image Slicer for the MIRADAS Instrument

Stelter,

Eikenberry

2019

Preprint

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We present the innovative macro-slicer optical and opto-mechanical designs for the third-generation Mid-resolution InfraReD Astronomical Spectrograph (MIRADAS) instrument for the 10.4m Gran Telescopio Canarias (GTC) in the 1-2.5 µm bandpass. MIRADAS uses up to 12 cryogenic, fully steerable probes to select simultaneous targets in a 5 arcminute field of view. The spectrograph module is a cross-dispersed echelle spectrograph. The macro-slicer is effectively a stack of six advanced image slicer Integral Field Units (IFUs) such as FRIDA or FISICA, and like other IFUs designed and built at the University of Florida by our group, uses a 'bolt-and-go' approach to minimize the difficulty in alignment and maximize robustness. Like other advanced image slicer IFUs, there are three sets of mirrors that work together to geometrically rearrange the loosely packed inputs from the probe arms into a tightly packed pseudo-slit. The macro-slicer also passively keeps the spectral resolution of MIRADAS fixed at R > 20, 000 in seeing from 1.2 arcseconds down to 0.4 arcseconds, (typical observing conditions at GTC).

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Section: Radiusmentioning

confidence: 99%

Optical and Opto-Mechanical Design of a Novel "Macro" Image Slicer for the MIRADAS Instrument

Stelter,

Eikenberry

2019

Preprint

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“…Another option for the integral field unit is using image-slicers 5,6,7,8,9 . The main concept is basically a slicer element that cuts the two-dimensional entrance field of view and uses mirror arrays to reorganize it into one or more long-slits.…”

Section: Image Slicermentioning

confidence: 99%

Feasibility study of high-resolution integral-field spectrographs for EST with multislit and multi-wavelength capabilities

2010

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This communication shows the feasibility study of a new instrument designed for the 4 meter European Solar Telescope (EST) for high resolution spectro-polarimetric observations. This paper is specifically focused on the spectrographs that allow the simultaneous observation of 5 visible and 4 near-infrared wavelengths (complying with the science requirements), with 8 entrance slits of 200arcsec each fed by an integral field unit covering an area on the solar surface of 9 x 9 arcsec 2 .

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“…1 The IFU has already been constructed as part of a previous research program. 2 Considerable effort went into reducing the manufacturing cost of the instrument by minimizing the number of aspheric surfaces and using relatively inexpensive lens materials in the optical design. The final design consists of mostly spherical surfaces with the exception of the reimaging optics and two aspheric lens surfaces.…”

Section: Optical Designmentioning

confidence: 99%

“…The IFU, called Florida Image Slicer for Infrared Cosmology and Astrophysics (FISICA), is an image slicer-type IFU that was constructed by the University of Florida. [2][3][4] For seeing-limited observations, the image slicer-type IFU is best suited for wide-field operation compared to a lenslet array-based IFU because of its coarse spatial sampling and higher throughput. For AO, however, the image slicer-type IFU is not well-suited because it introduces more wavefront errors compared to lenslet array-type IFU made with low index of refraction material.…”

Section: Optical Designmentioning

confidence: 99%

The development of WIFIS: a wide integral field infrared spectrograph

Sivanandam

Chou

et al. 2012

SPIE Proceedings

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We present the current results from the development of a wide integral field infrared spectrograph (WIFIS). WIFIS offers an unprecedented combination of etendue and spectral resolving power for seeing-limited, integral field observations in the 0.9 − 1.8 µm range and is most sensitive in the 0.9 − 1.35 µm range. Its optical design consists of front-end re-imaging optics, an all-reflective image slicer-type, integral field unit (IFU) called FISICA, and a long-slit grating spectrograph back-end that is coupled with a HAWAII 2RG focal plane array. The full wavelength range is achieved by selecting between two different gratings. By virtue of its re-imaging optics, the spectrograph is quite versatile and can be used at multiple telescopes. The size of its field-of-view is unrivalled by other similar spectrographs, offering a 4.5 × 12 integral field at a 10-meter class telescope (or 20 × 50 at a 2.3-meter telescope). The use of WIFIS will be crucial in astronomical problems which require wide-field, two-dimensional spectroscopy such as the study of merging galaxies at moderate redshift and nearby star/planet-forming regions and supernova remnants. We discuss the final optical design of WIFIS, and its predicted on-sky performance on two reference telescope platforms: the 2.3-m Steward Bok telescope and the 10.4-m Gran Telescopio Canarias. We also present the results from our laboratory characterization of FISICA. IFU properties such as magnification, field-mapping, and slit width along the entire slit length were measured by our tests. The construction and testing of WIFIS is expected to be completed by early 2013. We plan to commission the instrument at the 2.3-m Steward Bok telescope at Kitt Peak, USA in Spring 2013.

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Design, fabrication, assembly, and testing of the Florida image slicer for infrared cosmology and astrophysics (FISICA) integral field unit

Cited by 6 publications

References 2 publications

Optical and Opto-Mechanical Design of a Novel "Macro" Image Slicer for the MIRADAS Instrument

Optical and Opto-Mechanical Design of a Novel "Macro" Image Slicer for the MIRADAS Instrument

Feasibility study of high-resolution integral-field spectrographs for EST with multislit and multi-wavelength capabilities

The development of WIFIS: a wide integral field infrared spectrograph

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