QUIJOTE CMB Experiment. Project status

Since November 2012, the first QUIJOTE telescope (QT1) and first QUIJOTE instrument (MFI) are operating from the Teide Observatory. The second QUIJOTE telescope (QT2) is in place since Juy 2014. The comissioning of the TGI started in June 2015. On June 27th 2015, his Majesty the King of Spain inaugurated the complete installation, with the two QUIJOTE telescopes and two instruments in place (MFI and TGI).

Below, we present a brief description of the status of all the sub-systems:

QUIJOTE Enclosure and Platform

The enclosure of the QUIJOTE telescopes at the CMB laboratory of the Teide Observatory (Tenerife, Spain). Pictures taken on May 27th, 2009.


QUIJOTE Telescopes

The two QUIJOTE telescopes are already installed at the Teide Observatory. The first QUIJOTE telescope (QT1) arrived at the IAC workshops (La Laguna, Tenerife) in January 2009, and was finally installed in the Teide Observatory in May 2012. The second QUIJOTE telescope (QT2) arrived to Tenerife at the end of June 2014, and was installed at the Observatory on July 3rd, 2014. Both telescopes were produced by the IDOM company in Spain.

Left: QT1 few days after arrival, on January 2009. Right: QT1 on June 2009, with all the electronics installed.

Installation of the QT1 at the Teide Observatory (May 3rd, 2012).

Instalation of the QT2 at the Teide Observatory (July 3rd, 2014).

QT2 instalation

QT1 and QT2 telescopes at the Teide Observatory.

Two QUIJOTE telescopes

QUIJOTE First Instrument: MFI (10-20 GHz)


Cryostat and horns (March 2009).

QUIJOTE 1st Inst - Cryostat
QUIJOTE 1st Inst- Horns


Low noise amplifiers (LNAs) manufactured by Caltech.


QUIJOTE 1st Inst - LNAs



Final integration of the MFI (January 2012). Left: Close view of the MFI, during the integration phase. Center: Integration of the MFI in the QT1 focal plane. Right: MFI already installed at the QT1 focal plane. The electronic boxes controlling the telescope and the instrument are also installed.


The QUIJOTE Source Subtractor Facility

A dedicated instrument at 30 GHz, which is an upgraded version of the VSA source substractor conv erted into a polarimeter, will be used to produce a catalogue of polarization measurements at 30 GHz for radios ources with fluxes above 200 mJy in intensity. This information will be used to correct the QUIJOTE maps from the contamination of radiosources. Figure shows the two antennas of the Source Subtractor, already installed at the Teide Observatory (Tenerife, Spain).

QUIJOTE - Source subtractor

QUIJOTE Second Instrument: TGI (30 GHz)

The second QUIJOTE Instrument started the commissioning phase in June 2015. 

QUIJOTE TGI - internal structure and few pixels

One pixel of the TGI: