The UK FMOS spectrograph forms part of Subaru's FMOS multi-object infrared spectroscopy facility. The spectrograph
was shipped to Hilo in component form in August of 2007. We describe the integration sequence for the spectrograph,
the results of cooldown tests using a new chiller unit fitted to the spectrograph at the telescope, and alignment tests of the
spectrograph, gratings and OH-suppression masks. We present the first-light observations for the spectrograph from May
FMOS: the Fiber Multiple-Object Spectrograph is the next common-use instrument of the Subaru Telescope,
having a capability of 400 targets multiplicity in the near-infrared 0.9-1.8μm wavelength range with a field
coverage of 30' diameter. FMOS consists of three units: 1) the prime focus unit including the corrector lenses,
the Echidna fiber positioner, and the instrument-bay to adjust the instrument focus and shift the axis of the
corrector lens system, 2) the fiber bundle unit equipping two fiber slits on one end and a fiber connector box with
the back-illumination mechanism on the other end on the bundle, 3) the two infrared spectrographs (IRS1 and
IRS2) to obtain 2×200 spectra simultaneously. After all the components were installed in the telescope at the
end of 2007, the total performance was checked through various tests and engineering observations. We report
the results of these tests and demonstrate the performance of FMOS.
We present the design and initial laboratory tests of a new integral-field spectroscopy mode to be added to the Goddard
Fabry-Perot instrument at Apache Point Observatory. This new IFS mode incorporates a 'TIGER'-style lenslet array,
with pre-optics to allow spatial sampling of 0.21 or 0.42 arcseconds, corresponding to fields-of-view of 7 or 14
arcseconds. For coronography, we insert a mask close to the lenslet array focal plane, blocking a discrete number of the
lenslet foci. Three VPH grisms will be available to disperse the spectra, with medium-resolution (R~1000) red (λ ~
660nm) and green (λ ~ 490nm) modes and a high-resolution (R~5000) red mode. We show that it is possible to reduce
crosstalk between spectra by at least an order of magnitude by placing a pinhole mask at the focus of the lenslet array,
and present data on the throughput of the lenslets and VPH grism.
We describe the build phase of the UK FMOS spectrograph, a 200 fibre cooled OH Suppression infrared spectrograph
being constructed as part of Subaru's Fibre Multi Object Spectroscopy facility. Here we describe recent UK activities
within the FMOS programme and the likely schedule for commissioning at Subaru.
FMOS is a near-IR OH-suppressed multi-fibre fed spectrograph for the Subaru telescope. The spectrograph will accept 200 optical fibres from the ECHIDNA positioner system at the 30arcmin Prime focus of the telescope. We will describe the recent activities here in the UK in progressing the instrument from its conceptual phase through detailed design and into manufacture. A variety of technical areas will be described including: the opto-mechanical system design and construction, development of the HAWAII-II detector control system, the thermal system design & control and OH suppression techniques.