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Celebrating 75 Years of Discovery
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Triple Spectrograph (TSpec) Technical Specifications
View the original specsheet.
Spectrograph
Status: Observatory Instrument
- Slit: 1 × 30 arcsecond slit
- Wavelength coverage: 1.0 – 2.4 µm
- Spectral resolution: 2500 – 2700
- Sampling: ~ 2.7 pixels per resolution element
- Minimum integration time: 4 seconds
- Gain: ~ 3.8 e−/DN
- Saturation level: ~ 28000 DN (conservatively)
- Data sampling: CDS, Fowler, or sample-−up the ramp
- Read noise: 10 e− (CDS), 5 e− (8 samples), 3.5 e− (16 samples)
- Dark current: ~ 0.085 e−/sec
- Time to background limit: ~ 300 seconds
- Array size: 1K × 2K
Guider/Imager
Status: Observatory Instrument
- Wavelength: 1 – 2.5 µm
- Size of field: 4′ × 4′
- Scale: 0.234″/pixel
- Minimum integration time: 1.8 seconds
- MCT: Engineering grade Hawaii II CCD 1024 × 1024
- Data sampling: CDS, CCD linear to 30,000 ADU, however, in differencing mode continuously exposed, the displayed image goes non-linear ~18,000 ADU
- Read noise: < 10 e− (CDS)
Questions? We've answered many common observing and operations questions in our observer FAQ page.
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TripleSpec Specs / v 2.0.1
Last updated: 31 March 2019 ACM
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