spectrometer wavelength calibration xhspot proposal: pvspecwave h. feuchtgruber
DESCRIPTION
Spectrometer Wavelength Calibration XHSPOT Proposal: PVSpecWave H. Feuchtgruber. Description of the Calibration Problem. 47” x 47”. Blue array: 400 pixels Red array: 400 pixels 2 different blue filters 3 grating orders - Grating range: 32000-1064000 positions - PowerPoint PPT PresentationTRANSCRIPT
PACS CoP & PV Review 21/22 Jan 2009
PVSpecWave 1
Spectrometer Wavelength CalibrationXHSPOT Proposal: PVSpecWave
H. Feuchtgruber
PACS CoP & PV Review 21/22 Jan 2009
PVSpecWave 2
47” x 47”- Blue array: 400 pixels- Red array: 400 pixels- 2 different blue filters- 3 grating orders- Grating range: 32000-1064000 positions- Spectral resolution elements: ~3650 (x sampling x time)
Description of the Calibration Problem
1st order
3rd order
2nd order
2x
PACS CoP & PV Review 21/22 Jan 2009
PVSpecWave 3
PCD Requirements
• PCD sec. 4.2.1: Required accuracy: “Peak position to within 10-20% of a spectral resolution element”
PACS CoP & PV Review 21/22 Jan 2009
PVSpecWave 4
XHSPOT Proposal: PVSpecWave (1)
CUS AOR Name Observation NameDuration
[Sec]
PacsCal_WaveCalChopGen PVSpecWave_421C_nStdRS_chopnodorderB_WHya_0001 15603
PacsCal_WaveCalChopGen PVSpecWave_421C_nStdRS_chopnodorderA_Neptune_0001 15613
PacsCal_WaveCalChopGen PVSpecWave_421C_nStdRS_chopnodorderA_WHya_0001 15603
PacsCal_WaveCalChopGen PVSpecWave_421C_nStdRS_chopnodorderB_Neptune_0001 15613
PacsCal_WaveCalNoChopGen PVSpecWave_421D_nStdLS_nochoporderRed_NGC6302_0001 533
PacsCal_WaveCalNoChopGen PVSpecWave_421D_nStdLS_nochoporderRed_NGC6302_0002 832
PacsCal_WaveCalNoChopGen PVSpecWave_421D_nStdLS_nochoporderRed_NGC6302_0003 531
PacsCal_WaveCalNoChopGen PVSpecWave_421D_nStdLS_nochoporderRed_NGC6302_0004 1132
PacsCal_WaveCalNoChopGen PVSpecWave_421B_nStdRS_nochoporderA_Jupiter_0001 7834
PacsCal_WaveCalNoChopGen PVSpecWave_421B_nStdRS_nochoporderB_Jupiter_0001 7834
PacsCal_WaveCalNoChopGen PVSpecWave_421D_nStdLS_nochoporderA_NGC6302_0001 529
PacsCal_WaveCalNoChopGen PVSpecWave_421D_nStdLS_nochoporderA_NGC6302_0002 530
PacsCal_WaveCalNoChopGen PVSpecWave_421D_nStdLS_nochoporderB_NGC6302_0001 529
PacsCal_WaveCalNoChopGen PVSpecWave_421A_nStdRS_nochoporderA_Jupiter_0001 704
PacsCal_WaveCalNoChopGen PVSpecWave_421A_nStdRS_nochoporderA_Jupiter_0002 704
PacsCal_WaveCalNoChopGen PVSpecWave_421A_nStdRS_nochoporderB_Jupiter_0001 1015
PacsCal_WaveCalNoChopGen PVSpecWave_421A_nStdRS_nochoporderB_Jupiter_0002 427
PacsCal_WaveCalNoChopGen PVSpecWave_421A_nStdRS_nochoporderB_Jupiter_0003 1015
PACS CoP & PV Review 21/22 Jan 2009
PVSpecWave 5
XHSPOT Proposal: PVSpecWave (2)
CUS AOR Name Observation NameDuration
[Sec]
PacsEng_PacsSpecSlewCalGen PVSpecWave_421B_nStdRS_SlewCalA_Dummy_0001 92
PacsEng_PacsSpecSlewCalGen PVSpecWave_421B_nStdRS_SlewCalA_Dummy_0002 92
PacsEng_PacsSpecSlewCalGen PVSpecWave_421B_nStdRS_SlewCalA_Dummy_0003 92
PacsEng_PacsSpecSlewCalGen PVSpecWave_421B_nStdRS_SlewCalB_Dummy_0001 92
PacsEng_PacsSpecSlewCalGen PVSpecWave_421B_nStdRS_SlewCalB_Dummy_0002 92
PacsEng_PacsSpecSlewCalGen PVSpecWave_421B_nStdRS_SlewCalB_Dummy_0003 92
PacsCal_WaveCalNodRasterGen PVSpecWave_425A_nStdRS_choprasterorderB_IC2501_0001 14733
PacsCal_WaveCalNodRasterGen PVSpecWave_425A_nStdRS_choprasterorderA_IC2501_0001 14734
PacsCal_WaveCalNodRasterGen PVSpecWave_425A_nStdRS_choprasterorderA_IC2501_0002 14733
PacsEng_Spec_CRE_setup_uGen PVSpecWave_421B_nStdCRE_setup_Dummy_0001 9
PacsEng_Spec_CRE_setup_uGen PVSpecWave_421B_nStdCRE_setup_Dummy_0002 9
PacsEng_Spec_CRE_setup_uGen PVSpecWave_421B_nStdCRE_setup_Dummy_0003 9
PacsEng_Spec_CRE_setup_uGen PVSpecWave_421B_nStdCRE_setup_Dummy_0004 9
PacsEng_Spec_CRE_setup_uGen PVSpecWave_421B_nStdCRE_setup_Dummy_0005 9
…. more to be filled in according to actual target visibilities !
PACS CoP & PV Review 21/22 Jan 2009
PVSpecWave 6
Wavelength Calibration Targets (1)
• Suitable target list containing strong molecular lines:- PICC-ME-TN-013, ”Use of late type stars for PACS wavelength
calibration”, (D. Lutz)- “Photometric and Spectroscopic Calibration of Herschel
Instruments with Planets and Satellites”, (Th. Encrenaz, R. Moreno, A. Coustenis)
• Uranus(H2O), Neptune(H2O, CO), Saturn(H2O, NH3, PH3)
• Jupiter (H2O, NH3, PH3 ; fills entire 5x5 field of view !)
• Justtanont et al., A&A, 360, 1117-1125 (2000), “ISO-LWS observations of rotational CO lines from C-rich objects”
PACS CoP & PV Review 21/22 Jan 2009
PVSpecWave 7
Wavelength Calibration Targets (2)
• Suitable target list containing strong atomic fine-structure lines:- 19 selected Planetary Nebulae:
IC418, IC2501, NGC5315, He2-131, NGC6210, NGC6543, NGC 6572,SwSt1, BD +30 3639, NGC6826, IC4997, NGC7027, NGC7662, NGC40, NGC3242, NGC3918, NGC5882, NGC6302, NGC6905
- Atomic fine-structure lines within the PACS wavelength range:
[OIII]=51.8145µm; [NIII]=57.317µm; [OI]=63.184µm; [OIII]=88.356µm;[NII]=121.898µm; [OI]=145.525µm; [CII]=157.741µm;[NII]=205.178µm;
- References: 1) ISO 95-015, Planetary nebulae to be used as ISO-SWS Astronomical Calibration Sources, H.W.W. Spoon, K.A. van der Hucht, D. Lutz2) An Infrared Spectral Line List of Astrophysical Interest (2.4-200µm) and its use in the SWS and LWS ISO Central Program3) www.mpe.mpg.de/ir/ISO/linelists/FSlines.html4) Liu et al., MNRAS, 323, 343, (2001), “ISO LWS observations of planetary nebula fine-structure lines” [provides also observed line fluxes]
PACS CoP & PV Review 21/22 Jan 2009
PVSpecWave 8
PVSpecWave: The spatial situation
43
.9”
Diameter of JupiterMid-Jun-09 as seen
from L2
White crosses indicate
location of all PACS spectrometer spatial
pixels
PACS CoP & PV Review 21/22 Jan 2009
PVSpecWave 9
PVSpecWave: Spatial Information about Targets
• Fluxes of moons and faint ring are being neglected• Roll-angle will be important for assigning rotational velocity shifts separately for each spatial pixel (max. Δλ ~11km/s)• Check that no other bright targets come close to Jupiter at actual observation date/time.• Require Herschel velocity towards target and doppler shifts
PACS CoP & PV Review 21/22 Jan 2009
PVSpecWave 10
Status of Analysis and Uplink Preparation
• Analysis code (or CAP) is unchanged from FM ILT - Operating system: MS WinXP - Use HIPE to generate L0 products- Use IDL code to derive new calibration parameters- Output = ASCII files of polynomial coefficients for inclusion into
pipeline
• Updated input model spectra for all giant planets are available now covering the entire PACS wavelength range and convolved to the PACS spectral resolution, inclusion of HD lines in progress
• For the overall calibration strategy and formalism see presentation at the Herschel Calibration Workshop#2
• Uplink (1st version) is defined in X-HSPOT proposal PVSpecWave• No relevant SOVT data available for analysis
Semi-Automatic calibration procedure
PACS CoP & PV Review 21/22 Jan 2009
PVSpecWave 11
Calculated fluxes for 1 spatial pixel
PACS CoP & PV Review 21/22 Jan 2009
PVSpecWave 12
Calibration Targets for Molecular LinesStart PV
Start Routine Ops
Targ
et
vis
ibili
ties
(HSPO
T)
PACS CoP & PV Review 21/22 Jan 2009
PVSpecWave 13
Targ
et
vis
ibili
ties
(HSPO
T)
Calibration on bright PNsStart PV
Start Routine Ops
selected out of Ref. (1)
Monitoring for roll angle/time dependencies etc.