DESHIMA on ASTE: On-Sky Responsivity Calibration of the Integrated Superconducting Spectrometer

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)
22 Downloads (Pure)


We are developing an ultra-wideband spectroscopic instrument, DESHIMA (DEep Spectroscopic HIgh-redshift MApper), based on the technologies of an on-chip filter bank and microwave kinetic inductance detector (MKID) to investigate dusty starburst galaxies in the distant universe at millimeter and submillimeter wavelengths. An on-site experiment of DESHIMA was performed using the ASTE 10-m telescope. We established a responsivity model that converts frequency responses of the MKIDs to line-of-sight brightness temperature. We estimated two parameters of the responsivity model using a set of skydip data taken under various precipitable water vapor (PWV 0.4–3.0 mm) conditions for each MKID. The line-of-sight brightness temperature of sky is estimated using an atmospheric transmission model and the PWVs. As a result, we obtain an average temperature calibration uncertainty of 1σ=4%, which is smaller than other photometric biases. In addition, the average forward efficiency of 0.88 in our responsivity model is consistent with the value expected from the geometrical support structure of the telescope. We also estimate line-of-sight PWVs of each skydip observation using the frequency response of MKIDs and confirm the consistency with PWVs reported by the Atacama Large Millimeter/submillimeter Array.
Original languageEnglish
Pages (from-to)231-239
Number of pages9
JournalJournal of Low Temperature Physics
Issue number1-2
Publication statusPublished - 2020

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.


  • Calibration
  • Microwave kinetic inductance detector
  • Submillimeter astronomy


Dive into the research topics of 'DESHIMA on ASTE: On-Sky Responsivity Calibration of the Integrated Superconducting Spectrometer'. Together they form a unique fingerprint.

Cite this