LUCI - Exposure Time Calculator

Version 1.34.11


Telescope Modes

Seeing-limited mode

Diffraction-limited mode

Strehl ratio:


Object Characteristics

Point source

Extended source

Template Spectrum: Redshift:

Blackbody with T= K

Single line with ...

... Wavelength:
... Flux:
... Width:

micron
erg/s/cm2
Å

Target magnitude (Vega): = mag (mag/sq.arcsec for extended sources)


Hardware Characteristics

LUCI 1

LUCI 2

Imaging mode

Spectroscopic mode

Filter:

Camera:

Slit width:

Central wavelength of the grating in µm / Number of lines per millimeter:


Atmospheric Conditions

Water vapor: mm

Airmass:

Seeing: arcsec

Sky brightness for the zenith (Vega): mag/sq.arcsec
uniform flux density distribution, no sky lines

Background file with 1.6 mm water vapor and selected airmass

Theoretical background spectrum


Parameters of Exposure

SNR

Total exposure time sec

Detector Integration Time (DIT): sec (the minimum DIT is 2.74 sec)



Help

Send comments to J.Heidt(at)lsw.uni-heidelberg.de