Dear Robin, all the Balmer lines were blue shifted by about 2 A, though H zeta and H epsilon were shifted by 3 and 2.5 A respectively.
I’ll check all the connectors, though I thought they were tight really.
Here’s the report
Load the image : c:spectra20181028zeta_draconis-1.fit
Load the image : c:spectra20181028zeta_draconis-2.fit
Load the image : c:spectra20181028zeta_draconis-3.fit
Load the image : c:spectra20181028zeta_draconis-4.fit
Load the image : c:spectra20181028zeta_draconis-5.fit
Load the image : c:spectra20181028zeta_draconis-6.fit
Substract the offset : c:spectra20181028caliboffset.fit
Substract the dark : c:spectra20181028calibdark600_b2_minus10-.fit
Dark coefficient (1) : 0.0333
Dark coefficient (2) : 0.0333
Dark coefficient (3) : 0.0333
Dark coefficient (4) : 0.0333
Dark coefficient (5) : 0.0333
Dark coefficient (6) : 0.0333
Divide by the flat-field : c:spectra20181028flat.fit
Flat-field level : 38096
Cosmetic correction : c:spectra20181028calibcosme.lst
Smile correction – Y0 = 658 Radius = 11056
Transverse registration at intermediate Y coordinate = 533.00
Spectrum Y coordinate Y 1 = 533.31
Spectrum Y coordinate Y 2 = 533.47
Spectrum Y coordinate Y 3 = 533.53
Spectrum Y coordinate Y 4 = 533.73
Spectrum Y coordinate Y 5 = 533.76
Spectrum Y coordinate Y 6 = 533.58
Remove sky background
Save image : c:spectra20181028@s.fit (sky not removed)
Save 0b product : c:spectra20181028_Zeta Dra.fit (2D image)
Adopted Y coordinate : 532.51
Tilt correction (second pass)
Remove sky background (second pass)
Write 2D image : c:spectra20181028@1.fit
Write 2D image : c:spectra20181028@2.fit
Write 2D image : c:spectra20181028@3.fit
Write 2D image : c:spectra20181028@4.fit
Write 2D image : c:spectra20181028@5.fit
Write 2D image : c:spectra20181028@6.fit
Optimal binning
Write raw profile : c:spectra20181028@raw1.dat
Write raw profile : c:spectra20181028@raw2.dat
Write raw profile : c:spectra20181028@raw3.dat
Write raw profile : c:spectra20181028@raw4.dat
Write raw profile : c:spectra20181028@raw5.dat
Write raw profile : c:spectra20181028@raw6.dat
Intensity of individual profiles (ADU)…
Mean (median) for profile #1 : 278613 (48845)
Mean (median) for profile #2 : 267945 (46851)
Mean (median) for profile #3 : 274931 (46238)
Mean (median) for profile #4 : 283742 (47380)
Mean (median) for profile #5 : 261979 (48189)
Mean (median) for profile #6 : 248222 (44512)
Standard summation of individual profiles
Save uncalibrated spectral profile : c:spectra20181028@star.dat
Processing of calibration image : c:spectra20181028neon5.fit
Dark coefficient (calibration) : 0.0083
Save image : c:spectra20181028@calib.fit (2D image)
Save spectral profile : c:spectra20181028@calib.dat
Spectral calibration
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Primary dispersion :
Coefficient a4 : -1.941613E-13
Coefficient a3 : 5.199794E-09
Coefficient a2 : -4.783460E-05
Coefficient a1 : 0.39175
Coefficient a0 : -710.014
————————————————————————–
RMS : 0.091500 (en pixels)
————————————————————————–
Primary wavelength fit deviation
point #1 Lambda = 3770.630 px = 326.562 dx = -0.067
point #2 Lambda = 3797.300 px = 332.190 dx = 0.154
point #3 Lambda = 3835.390 px = 340.215 dx = -0.078
point #4 Lambda = 3889.050 px = 351.495 dx = -0.013
point #5 Lambda = 3970.080 px = 368.476 dx = 0.043
point #6 Lambda = 4101.750 px = 395.954 dx = -0.049
point #7 Lambda = 4340.480 px = 445.487 dx = -0.017
point #8 Lambda = 4861.340 px = 552.926 dx = 0.039
point #9 Lambda = 6562.850 px = 910.356 dx = -0.070
point #10 Lambda = 6869.000 px = 976.968 dx = 0.067
point #11 Lambda = 7605.000 px = 1140.339 dx = -0.009
————————————————————————–
Inverse dispersion equation
Coefficient a4 : 2.999117E-10
Coefficient a3 : -1.336891E-06
Coefficient a2 : 1.632851E-03
Coefficient a1 : 4.09469
Coefficient a0 : 2135.790
————————————————————————–
RMS : 0.311249 (in angstroms)
————————————————————————–
Wavelength fit deviation
point #1 x = 397.713 lambda = 3945.982 dlambda = 0.118
point #2 x = 441.652 lambda = 4158.959 dlambda = -0.369
point #3 x = 513.877 lambda = 4510.640 dlambda = 0.090
point #4 x = 520.824 lambda = 4544.520 dlambda = 0.530
point #5 x = 544.099 lambda = 4658.045 dlambda = -0.145
point #6 x = 565.974 lambda = 4764.726 dlambda = 0.144
point #7 x = 607.204 lambda = 4965.603 dlambda = -0.523
point #8 x = 696.858 lambda = 5400.458 dlambda = 0.102
point #9 x = 791.067 lambda = 5852.415 dlambda = 0.075
point #10 x = 878.731 lambda = 6266.457 dlambda = 0.033
point #11 x = 930.316 lambda = 6506.578 dlambda = -0.048
point #12 x = 1071.150 lambda = 7147.069 dlambda = -0.029
point #13 x = 1124.583 lambda = 7383.958 dlambda = 0.022
————————————————————————–
Coefficient a4 : 2.999117E-10
Coefficient a3 : -1.336891E-06
Coefficient a2 : 1.632851E-03
Coefficient a1 : 4.09469
Coefficient a0 : 2135.790
————————————————————————–
RMS : 0.311249
————————————————————————–
—————————————————————————-
Normalization spectral range : [6650 – 6750]
Normalization value (final profile) : 42355639.7
Normalization value (individulal profile #1) : 7359979.4
Normalization value (individulal profile #2) : 7024372.2
Normalization value (individulal profile #3) : 7031455.9
Normalization value (individulal profile #4) : 7078341.5
Normalization value (individulal profile #5) : 7177964.8
Normalization value (individulal profile #6) : 6683525.9
—————————————————————————-
Spectrum #1 ( b ) – ( v ) intensity = ( 0.836 ) – ( 0.996 )
Spectrum #2 ( b ) – ( v ) intensity = ( 0.860 ) – ( 0.994 )
Spectrum #3 ( b ) – ( v ) intensity = ( 0.910 ) – ( 0.997 )
Spectrum #4 ( b ) – ( v ) intensity = ( 0.948 ) – ( 0.998 )
Spectrum #5 ( b ) – ( v ) intensity = ( 0.784 ) – ( 0.996 )
Spectrum #6 ( b ) – ( v ) intensity = ( 0.796 ) – ( 0.997 )
( b ) – ( v ) mean intensity = ( 0.856 ) – ( 0.996 )
( b ) – ( v ) median intensity = ( 0.860 ) – ( 0.997 )
—————————————————————————-
Write individual DAT processed profile : c:spectra20181028@pro1.dat
Write individual DAT processed profile : c:spectra20181028@pro2.dat
Write individual DAT processed profile : c:spectra20181028@pro3.dat
Write individual DAT processed profile : c:spectra20181028@pro4.dat
Write individual DAT processed profile : c:spectra20181028@pro5.dat
Write individual DAT processed profile : c:spectra20181028@pro6.dat
Write individual FITS processed profile : c:spectra20181028@pro1.fit
Write individual FITS processed profile : c:spectra20181028@pro2.fit
Write individual FITS processed profile : c:spectra20181028@pro3.fit
Write individual FITS processed profile : c:spectra20181028@pro4.fit
Write individual FITS processed profile : c:spectra20181028@pro5.fit
Write individual FITS processed profile : c:spectra20181028@pro6.fit
—————————————————————————-
Write final profile : c:spectra20181028_zetadra_20181028_970_J_Coffin.fit
Write final profile : c:spectra20181028_zetadra_20181028_970_J_Coffin.dat
Intermediate files removed
—————————————————————————-
Acquisition starting date : 28/10/2018 23:16:27
Duration : 42.0 secondes
Mid-exposure date : 28.970/10/2018
Mid-exposure Julian day : 2458420.4700
Resolution power : 507.6
Ok.