1 / 9

Herschel Calibration Workshop: Cross-Calibration Goals

Herschel Calibration Workshop: Cross-Calibration Goals. Anthony Marston & Elena Puga, Herschel Instrument and Calibration Scientist Team, HSC, ESAC. Intra Instrument Calibration Consistency. Planck cross-calibration. Photometer. Spectrometer. Between modes of operation.

grace
Download Presentation

Herschel Calibration Workshop: Cross-Calibration Goals

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Herschel Calibration Workshop: Cross-Calibration Goals Anthony Marston & Elena Puga, Herschel Instrument and Calibration Scientist Team, HSC, ESAC.

  2. Intra Instrument Calibration Consistency Planck cross-calibration Photometer Spectrometer Between modes of operation Cross Instrument Calibration Consistency Cross Observatory Calibration Consistency Model Checks • Stars • Planets • Asteroids Observation feedback for these models Calibration legacy for other Observatories Cross Cal Introduction * Herschel Cross Calibration Plan and Use Cases, v0.1 25/08/2010 (HERSCHEL-HSC-DOC-1720) * Herschel Cross-calibration report, drat v1.0 (HERSCHEL-HSC-REP-1935)

  3. PACS HIFI SPIRE CO 16-15 CO 6-5 CO 10-9 CO 8-7 CO 13-12 CII Spectral Overlaps HIFI – PACS: 1360-1900 GHz. Red leakage 1360-1550 GHz PACS – SPIRE: 1360-1550 GHz SPIRE – HIFI: 1400-1550 GHz & 490-1250 GHz HIFI – PACS: 157-220 mm. Red leakage 190-220 mm PACS – SPIRE: 193-220 mm SPIRE – HIFI: 193-213 mm & 240-616 mm Diagnostic lines in routine cross-calibration programmes

  4. Spectral line fluxes Continuum fluxes Cross Comparisons: Use Cases HIFI observations with fast chop and continuum timing options enabled • Single line measurements of point sources (or sources of known small size) • Line spectroscopy + single pointing • Single line measurements of extended sources • Line spectroscopy + Mapping • Broad range measurement of point sources • Broader range + single pointing ...see presentations by Peter Imhof and Ivan Valtchanov

  5. Spectral line fluxes Continuum fluxes HIFI observations with fast chop and continuum timing options enabled • Single line measurements of point sources (or sources of known small size) • Line spectroscopy + single pointing • Single line measurements of extended sources • Line spectroscopy + Mapping • Broad range measurement of point sources • Broader range + single pointing ...see presentation by Elena Puga

  6. Spectral line fluxes Continuum fluxes HIFI observations with fast chop and continuum timing options enabled • Single line measurements of point sources (or sources of known small size) • Line spectroscopy + single pointing • Single line measurements of extended sources • Line spectroscopy + Mapping • Broad range measurement of point sources • Broader range + single pointing ...see presentation by Pierre Royer and Elena Puga. Narrow overlap limits the exercise.

  7. Cross Calibration Source Sample New list of common Calibration Monitoring Sources after Cross-calibration Proposal (Sep 2011): Additional sources belonging to the HIFI Calibration source monitoring programme (most expensive in time)

  8. Cross Calibration Plan: Observation strategy • Materialized in a Spectrometer Cross-calibration Proposal: Total of 32.7 hours of observing time for cross-calibration purposes • Regular coordinated monitoring of CCMs • Completion of inter-instrument comparison of additional sources Position/pointing. Extended source corrections? HCalSG29 E.Puga 8

  9. Goals • Consistency • Feedback to models and better calibration through them • Determination of clear problem areas in standard processing • Specific: • PACS-S red leak using SPIRE/HIFI spectra • HIFI continuum – which modes really do give accurate continua?

More Related