Lazuli ETC
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Astrophysics & Space Lazuli

Lazuli Exposure Time Calculator

Exposure time calculators for Lazuli's three instruments.

Choose an instrument to estimate signal, background, and observing time.
Open WCC ->
WCC

Wide-field Context Camera

Filter mosaic on a single detector. Compute SNR from source, background, sensor/filter, aperture, jitter, exposure time, and read count.

 IFS

Integral Field Spectrograph

Spectroscopic ETC for stellar, SN Ia, and custom spectra with requested SNR, wavelength range, readout mode, and CSV export.

 IFS beta

Transit Spectroscopy

Exoplanet transmission spectra with the IFS: pick a planet from the NASA Exoplanet Archive, choose a model atmosphere, and get per-transit depth precision, model S/N, light curves and the readout that avoids saturating the host.

 ESC

ExtraSolar Coronagraph

High-contrast imaging for planet/star contrast, separation, zodiacal backgrounds, integration time, and post-processing gain.