Instrument |
Instrument Name: | PolKa |
Telescope: | APEX |
Telescope Aperture: | 12m |
Telescope Port: | Cassegrain |
Status: | Operational |
Commissioning Date: | |
Polarimetry: | |
Polarimetry Type: | submillimeter continuum polarimetry |
Stokes Parameters: | I
Q
U |
Wavelength Range: | 870 micron |
Modulator Type: | Other |
Modulator Type Other: |
rotating modulator (reflecting, tunable waveplate) |
Modulation Frequency: |
6.24 Hz |
Analyzer Type: | Wiregrid Beam-Splitter |
Analyzer Type Other: |
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Sensitivity: | ~ 100 mJy |
Accuracy Zero Point: |
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Accuracy Scaling: |
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Imaging: | Yes |
Wavelength Range: | 870 micron |
Field of View: | 0.2 degree |
Resolution: | 20 arcsec |
Pixel Scale: | |
Pixel Dimensions: | |
Sensor Type: | semiconductor bolometer array |
Limiting Magnitude: | |
Coronograph: | No |
Coronograph Type: | |
Coronograph IWA: | |
Adaptive Optics: | No |
DM, Number of Actuators: | |
DM Type: | |
WFS Type: | |
WFS Update frequency: | |
Strehl: | |
Limiting Magnitude: | |
Spectroscopy: | No |
Sampling: | |
Wavelength Range: | |
Spectral Resolution: | |
Limiting Magnitude: | |
Instrument Image: | |
Instrument Image Caption: | |
Instrument Reference Paper: | Wiesemeyer, H., Hezareh, T., Kreysa, E., et al., 2014, submitted to PASP, arXiv:1408.5100 |
Known Issues: | Position angle encoder needs repair work, therefore PolKa is temporarily out of operation. |
Instrument Contact: | H. Wiesemeyer, MPIfR Bonn |
Instrument Website: | |
Planned Upgrades: | |
Science |
Science Description: | |
Target Types: | |
Sample Image/Result: | |
Sample image Caption: | |
Sample Science Papers: | Alves, F., et al. 2014, A&A in press, arXiv:1408.5133 |
Remarks: | |