LRS Throughput Estimates

It is important for the PI to realize that due to the design of the HET the effective collecting area changes over a trajectory. Near the end of a trajectory the HET has half the collecting area that it has near the middle. As such two medium length visits centered on middle of a track could be more valuable than a single long visit. All throughput estimates are based upon center of track efficiency.

To see the effect of changing exposure times in a moving aperture try the HET Filling Factor Calculator.

Below we give the estimated on-sky performance for LRS2-B and LRS2-R in 10E-16 ergs (A) and in AB-mag (B) under a dark sky with 2x30 minute exposures with 1.2" FWHM image quality, ie. best possible conditions.

As we gain more information we will update these plots or generate a throughput calculator.



Last updated: Thu, 23 Nov 2017 16:04:01 -0600 shetrone



Overview

The Telescope

Technical Overview

Object Observability

Performance

Instruments

LRS2

LRS2 Summary

LRS2 Details

LRS2 Fiber Layout and Position Angle

LRS2 Throughput

LRS2 Observing details

VIRUS

VIRUS - Summary

VIRUS - Details

VIRUS - Throughput

VIRUS - Fiber Layout and Position Angle

Habitable Zone Planet Finder (HPF)

HRS-2

HRS-2 Summary

HRS-2 Details

HRS-2 configurations

HRS-2 exposure meter

HRS-2 Position Angle and Fiber layout

HRS-2 Throughput

Old Instruments

LRS - old

Wavelength Calibration

Program Preparation

Web Management System

Other HET Documentation