DAZLE Calculations and Simulations
DAZLE sensitivity calculations
The majority of programs here are written in C and rely heavily on the
CPGPLOT library, and my own LIBADA library. You
can compile programs by linking to the libraries in my home directory, here are some detailed instructions.
All the plots in this page are given as gzip'd postscript files
Unless otherwise stated, the cosmology is assumed to be Lambda-CDM
(OM=0.3 OL=0.7 H0=65km/s/Mpc)
Public DAZLE page.
Priddey's feasibility calculations.
JBH's paper on definitions
of spectral resolution
The proposal quotes a Finesse of 50. This corresponds to reflectivities (each surface equal) of;
Amplitude = 0.969
Intensity = 0.939
(intensity = amplitude^2).
If the Finesse was to be 100, that would give reflectivities of;
Amplitude = 0.984
Intensity = 0.969
fp.c : Plots the transmission curve of a Fabry-Perot interferometer.(25/01/2000)
sepcalc.c : Calculates the plate seperation and order required to observe a given wavelength with a given bandpass (finds closest bandpass possible). (25/01/2000)
NIR OH line lists
Merged line list from 0.9-1.4 microns.
This is the line list used for most of the calculations.
The lines used by COHSI
(and now CIRPASS).
A list of lines that are surpressed by
CIRPASS. (Same as above, but in a nicer form).
Near IR (0.9-5µ m) sky
background from Gemini page.
Keck/HIRES sky line
atlas. From 5000-10500 angstroms, but doesn't have fluxes (I don't think).
NIR sky code
plotskylines.c : Plots skylines from a
default (or specified) linelist. (22/02/2000)
The position and relative
strength of emission lines used in
calculations (Flux in photons/s/m^2/arcsec^2).
Estimate of background contribution from
emission lines seen by DAZLE over a its range of wavelengths (0.9-1.4
S:N Spectra - S:N obtained with a 10,000s exposure on Gemini.
Lyman-alpha with SFR=1Msol/yr. Resolution;
Aminated GIF showing the effect of changing the
Detectabiliy Spectra - SFR rate that gives S:N=5 in a 10,000s exposure on
Lyman-alpha detected at S:N of 5. Resolution;
Comparison between DAZLE,
gaussian and top-hat filters. I've made a close-up version that
exagerates the differences.
Last Modified: 22/2/2000
Fraser Clarke (email@example.com).