Calibration lamp T251 (normalized)

This data cube was supplied by Benoît Epinat and corresponds to the calibration lamp imaged before data aquisition in a run made to observe T251. The image was normalized (flattened).

The reduction was made using Tuna version 0.16.4. The code to reduce the image was:

import time
import tuna
tuna.log.set_path ( "test.log" )
tuna.log.verbose ( "file", "DEBUG" )

def reduce_test ( file_name ):
  file_object = tuna.io.read ( file_name )
  start = time.time ( )
  reducer = tuna.pipelines.calibration_lamp_high_resolution.reducer (
    min_rings = 3,
    best_ring_plane = 10,
    calibration_wavelength = 6598.953125,
    finesse = 12,
    free_spectral_range = 8.36522123894,
    interference_order = 791,
    interference_reference_wavelength = 6562.7797852,
    pixel_size = 9,
    scanning_wavelength = 6616.89,
    tuna_can = file_object,
    channel_subset = [ 0, 1, 2, 5 ],
    continuum_to_FSR_ratio = 0.125,
    noise_mask_radius = 8,
    dont_fit = False,
    unwrapped_only = False,
    verify_center = None )
  reducer.join ( )
  print ( "Tuna took {:.1f}s to reduce.".format ( time.time ( ) - start ) )
  return reducer

test = reduce_test ( "/home/nix/cold_store/fpdata_T251_Benoit_Epinat_2015-07-22/T251_norm.fits" )
tuna.tools.plot_high_res ( test )

Output from ipython was:

Log file set to test.log.
Handler <logging.FileHandler object at 0x7fbf76580860> set to 10.
Starting tuna.pipelines.calibration_lamp_high_resolution pipeline.
Continuum array created.
Barycenter done.
Noise map created with lower_value = 18615.99609375.
Searching for concentric rings in plane 0.
Could not find intersection between thertiary_chord and concurrent_line. Will attempt to recursively find another set of segments, removing one of the points from current set.
Concentric rings structure: ((241.08484490127751, 244.08963239387131), [214.18521084339031, 106.81156850738181], [2, 3])
Ring structure obtained from plane where borders occupy 50% of the array.
sorted_radii = ['106.81', '214.19']
inital_gap = 2.61e+06 microns
channel_gap = 29.176824392052367 microns.
Airy <|residue|> = 80.3 photons / pixel
sorted_distances == [100.90803532938621, 211.26671576925855, 270.282645933774]
Phase map unwrapped.
Wavelength calibration done.
Parabolic model fitted.
Tuna took 157.7s to reduce.
/home/nix/vtuna/lib/python3.4/site-packages/matplotlib/pyplot.py:516: RuntimeWarning: More than 20 figures have been opened. Figures created through the pyplot interface (`matplotlib.pyplot.figure`) are retained until explicitly closed and may consume too much memory. (To control this warning, see the rcParam `figure.max_open_warning`).
max_open_warning, RuntimeWarning)