Roque de los Muchachos Observatory

MIRADAS

MIRADAS
MIRADAS
Owner institution
Operation year
2019

(Mid-resolution InfRAreD Astronomical Spectrograph) The infrared spectrograph of intermediate resolution, MIRADAS, will operate in the 1 to 2.5 micron infrared band with a spectral resolution of 20.000. During 2010, MIRADAS was selected as the infrared spectrograph for the new generation of instruments for the Gran Telescopio Canarias (GTC), and presently it is under development by and International consortium.

MIRADAS is a multi-object spectrograph able to observe until 20 objects simultaneously thanks to its 20 articulated arms with a small mirror attached. Each arm can patrol a sector inside a 5 arcmin circle in the GTC focal plane.

The control system has 6 components:

  • Mechanisms control system
  • Data acquisition system
  • High level control (Instrument layer)
  • Data reduction pipeline
  • Exposure time calculator
  • Data factory agent

Its main parameters are:

Target field of regard: 5 arcminute diameter 20 arms. Each arm patrols a “slice of pie” wedge of this circular field
Individual target field of view: 3.7 x 1.2 arc seconds
Slit slicer geometry: 3 slices of 3.7x0.4 arcseconds
Detector: 4096 x 2048 pixels Mosaico of two HAWAII-2RG 2Kx2K
Spectropolarimetry: Linear, circular Cross-dispersion mode for one object
Continuum sensitivity:
J=18.9 mag

H=17.4 mag

K=16.7 mag

S/N=10 for 1 hour on-source exposure
Emission line sensitivity:
5x10-18 ergs/cm2/s (point)

8x10-18 ergs/cm2/s (resolved)

S/N=10 for 1 hour on-source exposure

Resolved source assumes 1 square arcsecond detect cell

 

Its main parameters are:

Target field of regard: 5 arcminute diameter 20 arms. Each arm patrols a “slice of pie” wedge of this circular field
Individual target field of view: 3.7 x 1.2 arc seconds
Slit slicer geometry: 3 slices of 3.7x0.4 arcseconds
Detector: 4096 x 2048 pixels Mosaico of two HAWAII-2RG 2Kx2K
Spectropolarimetry: Linear, circular Cross-dispersion mode for one object
Continuum sensitivity:
J=18.9 mag

H=17.4 mag

K=16.7 mag

S/N=10 for 1 hour on-source exposure
Emission line sensitivity:
5x10-18 ergs/cm2/s (point)

8x10-18 ergs/cm2/s (resolved)

S/N=10 for 1 hour on-source exposure

Resolved source assumes 1 square arcsecond detect cell

 

Related installation
Gran Telescopio CANARIAS (GTC)
GTC
Gran Telescopio CANARIAS
Telescope
Imaging
Spectrograph
Polarimeter
Nocturnal
Ø 1040.00 cm

Related Projects

Type
Instrument type