2005PASP..117.1411F

2005PASP..117.1411F - Publ. Astron. Soc. Pac., 117, 1411-1434 (2005/December-0)

FABRICANT D., FATA R., ROLL J., HERTZ E., CALDWELL N., GAURON T., GEARY J., McLEOD B., SZENTGYORGYI A., ZAJAC J., KURTZ M., BARBERIS J., BERGNER H., BROWN W., CONROY M., ENG R., GELLER M., GODDARD R., HONSA M., MUELLER M., MINK D., ORDWAY M., TOKARZ S., WOODS D., WYATT W., EPPS H. and DELL'ANTONIO I.

The Hectospec is a 300 optical fiber fed spectrograph commissioned at the MMT in the spring of 2004. In the configuration pioneered by the Autofib instrument at the Anglo-Australian Telescope, Hectospec's fiber probes are arranged in a radial ``fisherman on the pond'' geometry and held in position with small magnets. A pair of high-speed, six-axis robots move the 300 fiber buttons between observing configurations within ∼300 s, and to an accuracy of ∼25 µm. The optical fibers run for 26 m between the MMT's focal surface and the bench spectrograph, operating at R∼1000-2000. Hectochelle, another high-dispersion bench spectrograph offering R∼35,000, is also available. The system throughput, including all losses in the telescope optics, fibers, and spectrograph, peaks at ∼10% at the grating blaze in 1" FWHM seeing. Correcting for aperture losses at the 1".5 diameter fiber entrance aperture, the system throughput peaks at ∼17%, close to our prediction of 20%. Hectospec has proven to be a workhorse instrument at the MMT. Together, Hectospec and Hectochelle have been scheduled for (1)/(3) of the available nights since its commissioning. Hectospec has returned approximately 60,000 reduced spectra for 16 scientific programs during its first year of operation.

Journal keyword(s): Instrumentation: Spectrographs - Techniques: Spectroscopic - Methods: Data Analysis

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	BD+28 4211	HS*	21 51 11.0221915656	+28 51 50.367627468	8.922	10.25	10.58	10.656	10.831	sdO2VIIIHe5	837	0

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`BD+28 4211`	`HIP 107864`	`TD1 30949`	`uvby98 002804211`
`GCRV 72548`	`JP11 97`	`TIC 452740376`	`WD 2148+286`
`GEN# +0.02804211`	`2MASS J21511102+2851504`	`TYC 2214-1198-1`	`[HJ56] 233`
`GSC 02214-01198`	`NAME NC 55`	`UBV 18719`	`Gaia DR2 1897151272994229120`
`HIC 107864`	`Renson 57770`	`UBV M 1808`	`Gaia DR3 1897151272994229120`

`BD+28 4211`	`GSC 02214-01198`	`HIC 107864`	`HIP 107864`	`2MASS J21511102+2851504`
`TD1 30949`	`TYC 2214-1198-1`	`uvby98 002804211`	`WD 2148+286`	`Gaia DR2 1897151272994229120`
`Gaia DR3 1897151272994229120`