Wafer-Scale Imager for Prime (WaSP) Technical Specifications
Status: Observatory Instrument
Contents
- Updates
- Documentation
- Telescope
- Detectors
- Filters
- Software
WaSP focal plane layout.
Initial facility deployment February 2018.
Coming soon.
- 200-inch prime focus, f/3.3.
- Field of view: 18.4′ x 18.5′.
- "Science Detector": 6144 (H) × 6160 (V) E2V 231C.
- Pixel Size: 15 µm square
- Imaging Area: 92.2 x 92.4 mm
- Plate Scale: 0.18"/pixel
- Field: 18.4′ × 18.5′
- Read noise: 5 e−.
- Full Well: 350Ke−
- Dark current: 3.0 e−/pixel/hr
- Frame rate (shortest exposure time for full array): 3.23 seconds.
- Guide and Focus CCDs: 2064x2064 STA3600A delta-doped
- Pixel Size: 15 µm square
- Imaging Area: 31.0 × 31.0 mm
- Plate Scale: 0.18"/pixel
- Field: 6.192′ × 3.096′ (frame-transfer read)
- Read noise: 2 e−.
- Full Well: 200 Ke−
- Dark current: 2.0 e−/pixel/hr
- Readout Time:
- Full-Frame Science Array: 12s
- Full-Frame Guide Array: 7.5s
- Full-Frame Focus Array: 15s
Currently WaSP shares filters, and the filter and shutter assembly with LFC.
Filter wheel has slots for 4 filters.
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Open the following vnc desktop on the observer computer (vncviewer 198.202.125.140:16 or wasp.palomar.caltech.edu:16).
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Right mouse click on the desktop and select open terminal.
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Start the WASP instrument control software by typing “wasp”.
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Open the “WASP Filter-wheel and Shutter Control”.
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“Home” the shutter first.
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“Home” the filter-wheel.
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Select filter you wish to focus in.
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Open the “Electronics Monitoring” tab and engage “Activate Shutter” and “Activate Filter-wheel”.
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Select “LFC Shutter” radiobutton.
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Return to the main panel and engage the “Display in DS9” button.
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