MODHIS/HISPEC Observing Scenario Simulator

Exposure Time Calculator

Signal-to-Noise Ratio (SNR) Calculator

Object Properties

On-axis Object Temperature (K) (200-12000)

On-axis Object Magnitude (Vega)

Vsini of On-axis Object (km/s)

RV of On-axis Object (km/s)

Off-axis Object Temperature (K) (200-12000)

Off-axis Object Magnitude (Vega)

Vsini of Off-axis Object (km/s)

Angular Separation Between Objects (mas)

Exposure Setting

Frame Exposure Time(s)

Target SNR

Goal CCF

Calculation Details

For object's model spectrum, temperatures above 2200K will load Phoenix and temperatures below 2200K will load Sonora. For the method used for CCF SNR, see compute_ccf_snr_matchedfilter in PSI-sim. For special cases or custom simulations, please refer Specsim.

Exposure Time Calculator

Object Properties

Filter for Object Magnitude Definition

Instrument & Sky Setting

Exposure Setting

Task Status

Time for Target CCF (s):

Recommended Exposure Time Based on Target SNR (s):

Calculation Details