PESSTO Year2 - Final EFOSC2 Spectra reduction

Prizes of the year:
A light in the dark: SN2013ej (almost easier than a standard)
Why always me? : SN2009ip taken in May 2014
Deja-vu: whichever type Ia and its 200-300 siblings
Peek-a-boo: SN2013am nebular spectrum (absolutely cover beneath the host galaxy)
What is going on over here?: CSS121015 with the SN not in the centre, a pivot star chosen by the local sequence and labelled as star number 2 (when in the paper are labelled in alphabetical order) and the wrong configuration


Here the extremely long log.

July/Aug 2013


gr13 RMS wavelength calibration as in the paper (0.05-0.15) or even slightly better
The same is true for gr16 (0.05-0.11)
And for gr11 (0.05-0.15)
Always used a fourth polynomial order (order=5 for iraf)

tLSQ13bnx_20130814_Gr13_Free_slit1.0_56999_1.fits (and its extraction) affected by electronic noise
tLSQ13bor_20130827_Gr13_Free_slit1.0_56999_1.fits little to no detection of the SN trace
tOGLE-2013-SN-045_20130815_Gr13_Free_slit1.0_56999_1.fits little to no detection of the SN trace
tEG274_20130804_Gr13_Free_slit1.0_56999_1 has a spike in the blue
tEG274_20130815_Gr13_Free_slit1.0_56999_1.fits is not good, despite the trace was clear, the extracted spectrum has a blue depression
tEG274_20130816_Gr13_Free_slit1.0_56999_1.fits is not good, emission lines in the blue

The pipeline crashed after tEG274_20130816_Gr13_GG495_slit1.0_56999_1, possibly because of the original standard without the blocking filter.

tLTT7379_20130804_Gr13_Free_slit1.0_56999_1.fits has a spike in the red and an additional wavelength calibration of -22.9 with the night skylines
tLTT7379_20130804_Gr13_GG495_slit1.0_56999_1 same as before and an additional wavelength calibration of -40.7 with the night skylines
tLTT7379_20130828_Gr13_Free_slit1.0_56999_1.fits seems strange in the red (big absorption unusual for this standard)
tLTT7379_20130828_Gr13_GG495_slit1.0_56999_1 has a spike in the red and an additional wavelength calibration of -39.6 with the night skylines

tEG274_20130728_Gr16_OG530_slit1.5_56999_1.fits not great
tLTT7379_20130804_Gr16_OG530_slit1.0_56999_1.fits is out of wavelength (-23.9)
tSN2013ej_20130815_Gr16_OG530_slit1.0_56999_1.fits is ourt of wavelength (-36.9) but had poor trace in the red part (forced to follow a straight line)
tEG274_20130815_Gr11_Free_slit1.0_56999_2.fits has problem, not the usual shape
tSN2013ew_20130826_Gr16_OG530_slit1.0_56999_1.fits no trace at the expected position (around 450 px)
2808 used standard of the day before since the only available was not good to build a reliable sensitivity curve
tvma2_20130829_Gr16_OG530_slit1.0_56999_1.fits has some problem (a broad absorption in the middle)

Sept 2013


SN2013ej_20130912_Gr16_OG530_slit1.0_56999_1.fits wavelengths calibration shift of -33.4 Ang
tLTT7379_20130906_Gr13_Free_slit1.0_56999_1.fits spectrum has problems after 600px and needs a shift of -35.8
tLTT7379_20130906_Gr13_GG495_slit1.0_56999_1.fits spectrum has problems after 400px
tLTT7379_20130908_Gr16_OG530_slit1.0_56999_1.fits spectrum has problem after 250px
tLTT7379_20130908_Gr16_OG530_slit1.5_56999_1.fits spectrum has problem after 250px
tLTT7379_20130911_Gr16_OG530_slit1.5_56999_1.fits pectrum has a spike around 400px and needs shift of -28.0
tSN2013ej_20130912_Gr16_OG530_slit1.0_56999_1.fits there is a huge line in the blue part despite the trace was clear (could be Halpha)
tLTT7379_20130912_Gr16_OG530_slit1.0_56999_1.fits has a spike at 7500 Ang and needs a shift of -36.1
tLTT7379_20130912_Gr16_OG530_slit1.5_56999_1.fits has a spike at 7500 Ang and needs a shift of -14.8
tLTT7379_20130912_Gr11_Free_slit1.0_56999_1.fits  has a spike in the blue
tLTT7379_20130912_Gr13_Free_slit1.0_56999_1.fits  has a spike at 7500 Ang
tLTT7379_20130912_Gr13_GG495_slit1.0_56999_1.fits   has a spike at 7500 Ang and needs a shift of -41.1

Oct 2013


I got a warning during PESSTOEFOSC2dSPEC:

Warning: missing keyword RA
Warning: missing keyword DEC

After that I almost got this error every configuration in each moth (I would say 90% of the time)

tPSNJ01591443+1901339_20131002_Gr16_OG530_slit1.0_57000_1.fits is very noisy

tLTT7379_20131007_Gr16_OG530_slit1.0_57001_1.fits has some problems (very weird wide, red absrption)
tLTT7379_20131007_Gr13_Free_slit1.0_57001_1.fits has the same problem

tOGLE-2013-SN-079_20131013_Gr11_Free_slit1.0_57001_1.fits nothing there
tOGLE-2013-SN-079_20131013_Gr11_Free_slit1.0_57001_2.fit nothing there

tSN2013fs_20131013_Gr11_Free_slit1.0_57001_1.fits affected by the electronic noise, noise of the same amplitude of the source, i.e. S/N <1

tSN2013fs_20131015_Gr16_OG530_slit1.0_57001_1.fits nothing there
tSN2013fs_20131015_Gr11_Free_slit1.0_57001_1.fits nothing there
tOGLE-2013-SN-100_20131023_Gr13_Free_slit1.5_57001_1.fits too faint
tOGLE-2013-SN-087_20131023_Gr13_Free_slit1.0_57001_1.fits nothing there and object not reported in the night report (there is an OGLE89 but it doesn't look they observed it)

Nov 2013


There was a standard taken with slit 5.0 without any flats or wave in the entire month.
I skipped this configuration

flat_20131130_Gr13_Free_slit1.0_100346088_57001.fits has something wrong (it is flat up to 300 px)
I have removed the product from the output of the pipeline since another, good, flat is present with the same configuration in the same night

flat_20131130_Gr13_Free_slit1.0_100346088_57001.fits has something wrong (it is flat from 500 to 800 px)
flat_20131123_Gr13_Free_slit1.0_100345901_57001 has the same problem

flat_20131123_Gr13_Free_slit1.0_100345840_57001.fits has absorptions!!

I had to remove all these files and the original flats, I also groups of 8 or 12 or even number of gr13 flats that could not be produced by our OBs, I removed all of them.

I also found a group of 98 bias in a row...again it cannot be our OB!

The wavlength lamp from the 26th onward have an higher rms (around 20) and less lines, even if I force other lines to be identified, the scatter doesn't decrease and at times the pipeline crashes.

The pipeline crashes with those wave lamp, again they are not standard OBs since there are two lamps in a row for each configuration (instead of one)

Possible problems in wave calibration with MLS131126_20131129_Gr13_Free_slit1.0_57001_1.fits
MLS131126-024708+163617_20131129_Gr13_Free_slit1.0_57001_1.fits

For unknown reasons the pipeline doesn't like EFOSC.2013-11-30T07:40:56.311.fits and I get the following error:
Traceback (most recent call last):
  File "/Users/Cosmo/Ureka/variants/common/bin/PESSTOEFOSC2dSPEC", line 112, in <module>
    listbias, listarc, _cosmic, _verbose)
  File "/Users/Cosmo/ntt-pipeline/lib/python2.7/site-packages/ntt/efoscspec2Ddef.py", line 758, in efoscspecreduction
    specred = ntt.util.spectraresolution2(arcfile)
  File "/Users/Cosmo/ntt-pipeline/lib/python2.7/site-packages/ntt/util.py", line 1029, in spectraresolution2
    lines.append(float(string.split(i)[2]))
ValueError: could not convert string to float: INDEF

It does the same for 
EFOSC.2013-11-30T07:40:56.311.fits (it is the same as above)
EFOSC.2013-11-30T07:13:28.367.fits
EFOSC.2013-11-30T08:07:19.329.fits

I am going to reduce those spectra in a second run.

This is the month wih the electronic noise pattern, the flat are affected and the normalised flat that has peak of 10% (instead of the usual 3-5%)
Many flats were saturated

Some flats on the 23rd and the 29th have less signal in the blue (the 23rd) or in the red (the 29th), that could be both a consequence of the electrnic noise or some odd choice of the observers. I decided to keep them since I already removed 50% or even more of the total amount of flats for the november/december run and if it is related with the noise, using normal flats could only increase the problem during the extraction

The data of the 29th of November have something strange, the wavelength scatter is higher than usual in all the configurations and the pipeline autoidentify only 5 or 6 lines (I had to entry the others manually)

tLSQ13dbn_20131123_Gr13_Free_slit1.0_57001_2.fits very noisy spectrum
tLSQ13dbn_20131123_Gr13_Free_slit1.0_57001_1.fits very noisy spectrum

23rd without standards and 25th without proper standards for slit1.5

tLSQ13cuw_20131125_Gr11_Free_slit1.0_57002_2.fits very noisy

tL745a_20131129_Gr16_OG530_slit1.0_57002_1.fits has problem in the red part (wide, red absorption)
tOGLE-2013-SN-128_20131129_Gr13_Free_slit1.0_57002_1.fits is repeated twice in the 1d (you can remove this one)

Dec 2013

EFOSC.2013-12-21T08:11:53.976.fits 
EFOSC.2013-12-21T08:14:04.525.fits
EFOSC.2013-12-21T08:16:14.774.fits
EFOSC.2013-12-22T02:54:10.511.fits
EFOSC.2013-12-22T02:56:20.860.fits
EFOSC.2013-12-22T02:58:31.139.fits

were originally listed as FLAT (in the field object),
they could be the internal flats since the difference between each object looks of ~2 minutes

see the header .... (I changed with the name of the object with ccdproc???)

Several flats are satured, I removed those manually before running the pipeline

Problem with the wavelength calibration of SMTJ03054854-28503700_20131202_Gr13_Free_slit1.0_57002_1.fits (off of 24 Ang that is kind of unusual)

flat_20131221_Gr16_OG530_slit1.0_100346911_57002.fits could have the same small depression in the red seen in november

tCATA50013A_20131210_Gr13_Free_slit1.0_57002_1.fits             
tCSS131207-082957-010201_20131209_Gr13_Free_slit1.0_57002_1.fits
tCSS131210-043252+304855_20131223_Gr13_Free_slit1.0_57002_1.fits
tCSS131211-084339+161038_20131222_Gr13_Free_slit1.0_57002_1.fits
tCSS131214-095921+004404_20131223_Gr13_Free_slit1.0_57002_1.fits
tCSS131224-020446-000718_20131226_Gr13_Free_slit1.0_57002_1.fits
tFeige110_20131130_Gr13_Free_slit1.0_57002_1.fits               
tFeige110_20131210_Gr13_Free_slit1.0_57002_1.fits               
tL745a_20131201_Gr13_Free_slit1.0_57002_1.fits                  
tLSQ13czk_20131130_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13ddu_20131222_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13ddu_20131222_Gr13_Free_slit1.0_57002_2.fits               
tLSQ13ddu_20131222_Gr13_Free_slit1.0_57002_3.fits               
tLSQ13ddu_20131222_Gr13_Free_slit1.0_57002_4.fits               
tLSQ13deg_20131201_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13deg_20131210_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13dek_20131220_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13deq_20131209_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13der_20131208_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13der_20131220_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13des_20131208_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13dhj_20131130_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13dht_20131130_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13dig_20131201_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13dkg_20131209_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13dkp_20131210_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13dkp_20131210_Gr13_Free_slit1.0_57002_2.fits               
tLSQ13dlp_20131221_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13dmg_20131220_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13dms_20131220_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13dnd_20131221_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13dnn_20131220_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13doe_20131222_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13doj_20131220_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13doq_20131221_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13dos_20131220_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13dot_20131220_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13dox_20131221_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13doz_20131220_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13dpm_20131222_Gr13_Free_slit1.0_57002_1.fits               
tLSQ13dqh_20131224_Gr13_Free_slit1.0_57002_1.fits               
tLTT3864_20131201_Gr13_Free_slit1.0_57002_1.fits                
tLTT3864_20131202_Gr13_Free_slit1.0_57002_1.fits                
tLTT3864_20131208_Gr13_Free_slit1.0_57002_1.fits                
tLTT3864_20131209_Gr13_Free_slit1.0_57002_1.fits                
tLTT3864_20131210_Gr13_Free_slit1.0_57002_1.fits                
tLTT3864_20131220_Gr13_Free_slit1.0_57002_1.fits                
tLTT3864_20131221_Gr13_Free_slit1.0_57002_1.fits                
tLTT3864_20131222_Gr13_Free_slit1.0_57002_1.fits                
tLTT3864_20131223_Gr13_Free_slit1.0_57002_1.fits                
tLTT3864_20131224_Gr13_Free_slit1.0_57002_1.fits                
tLTT3864_20131225_Gr13_Free_slit1.0_57002_1.fits                
tLTT3864_20131226_Gr13_Free_slit1.0_57002_1.fits                
tMLS131211-095947+132212_20131225_Gr13_Free_slit1.0_57002_1.fits
tOGLE-2013-SN-100_20131202_Gr13_Free_slit1.0_57002_1.fits       
tOGLE-2013-SN-100_20131225_Gr13_Free_slit1.0_57002_1.fits       
tOGLE-2013-SN-100_20131225_Gr13_Free_slit1.0_57002_2.fits       
tOGLE-2013-SN-100_20131225_Gr13_Free_slit1.0_57002_3.fits       
tOGLE-2013-SN-112_20131209_Gr13_Free_slit1.0_57002_1.fits       
tOGLE-2013-SN-129_20131202_Gr13_Free_slit1.0_57002_1.fits       
tOGLE-2013-SN-131_20131210_Gr13_Free_slit1.0_57002_1.fits       
tOGLE-2013-SN-134_20131224_Gr13_Free_slit1.0_57002_1.fits       
tOGLE-2013-SN-136_20131224_Gr13_Free_slit1.0_57002_1.fits       
tOGLE-2013-SN-137_20131222_Gr13_Free_slit1.0_57002_1.fits       
tOGLE-2013-SN-138_20131221_Gr13_Free_slit1.0_57002_1.fits       
tOGLE-2013-SN-141_20131225_Gr13_Free_slit1.0_57002_1.fits       
tOGLE-2013-SN-144_20131224_Gr13_Free_slit1.0_57002_1.fits       
tOGLE-2013-SN-147_20131223_Gr13_Free_slit1.0_57002_1.fits       
tPSNJ01462790-5840238_20131130_Gr13_Free_slit1.0_57002_1.fits   
tSMTJ03054854-28503700_20131202_Gr13_Free_slit1.0_57002_1.fits  
tSMTJ0570506-362623_20131201_Gr13_Free_slit1.0_57002_1.fits     
tSN2013am_20131209_Gr13_Free_slit1.0_57002_1.fits               
tgd71_20131221_Gr13_Free_slit1.0_57002_1.fits                   
tgd71_20131222_Gr13_Free_slit1.0_57002_1.fits                   
tgd71_20131223_Gr13_Free_slit1.0_57002_1.fits                   
tgd71_20131224_Gr13_Free_slit1.0_57002_1.fits                   
tgd71_20131225_Gr13_Free_slit1.0_57002_1.fits                   
tgd71_20131226_Gr13_Free_slit1.0_57002_1.fits                   
tlsq13dnw_20131220_Gr13_Free_slit1.0_57002_1.fits               
tvma2_20131220_Gr13_Free_slit1.0_57002_1.fits                   
tvma2_20131221_Gr13_Free_slit1.0_57002_1.fits                   
tvma2_20131223_Gr13_Free_slit1.0_57002_1.fits                   
tvma2_20131224_Gr13_Free_slit1.0_57002_1.fits                   
tvma2_20131225_Gr13_Free_slit1.0_57002_1.fits                   
tvma2_20131226_Gr13_Free_slit1.0_57002_1.fits                   
tCSS121015-004244+132827-star2_20131201_Gr13_GG495_slit1.5_57002_1.fits
tCSS121015-004244+132827-star2_20131202_Gr13_GG495_slit1.5_57002_1.fits
tCSS121015_20131224_Gr13_GG495_slit1.5_57002_1.fits                    
tCSS121015_20131225_Gr13_GG495_slit1.5_57002_1.fits                    
tCSS121015_20131226_Gr13_GG495_slit1.5_57002_1.fits                    
tFeige110_20131130_Gr13_GG495_slit1.5_57002_1.fits                     
tFeige110_20131210_Gr13_GG495_slit1.5_57002_1.fits                     
tL745a_20131201_Gr13_GG495_slit1.5_57002_1.fits                        
tLTT3864_20131201_Gr13_GG495_slit1.5_57002_1.fits                      
tLTT3864_20131202_Gr13_GG495_slit1.5_57002_1.fits                      
tLTT3864_20131208_Gr13_GG495_slit1.5_57002_1.fits                      
tLTT3864_20131209_Gr13_GG495_slit1.5_57002_1.fits                      
tLTT3864_20131210_Gr13_GG495_slit1.5_57002_1.fits                      
tLTT3864_20131220_Gr13_GG495_slit1.5_57002_1.fits                      
tLTT3864_20131221_Gr13_GG495_slit1.5_57002_1.fits                      
tLTT3864_20131222_Gr13_GG495_slit1.5_57002_1.fits                      
tLTT3864_20131223_Gr13_GG495_slit1.5_57002_1.fits                      
tLTT3864_20131224_Gr13_GG495_slit1.5_57002_1.fits                      
tLTT3864_20131225_Gr13_GG495_slit1.5_57002_1.fits                      
tLTT3864_20131226_Gr13_GG495_slit1.5_57002_1.fits                      
tgd71_20131221_Gr13_GG495_slit1.5_57002_1.fits                         
tgd71_20131222_Gr13_GG495_slit1.5_57002_1.fits                         
tgd71_20131223_Gr13_GG495_slit1.5_57002_1.fits                         
tgd71_20131224_Gr13_GG495_slit1.5_57002_1.fits                         
tgd71_20131225_Gr13_GG495_slit1.5_57002_1.fits                         
tgd71_20131226_Gr13_GG495_slit1.5_57002_1.fits                         
tvma2_20131220_Gr13_GG495_slit1.5_57002_1.fits                         
tvma2_20131221_Gr13_GG495_slit1.5_57002_1.fits                         
tvma2_20131223_Gr13_GG495_slit1.5_57002_1.fits                         
tvma2_20131224_Gr13_GG495_slit1.5_57002_1.fits                         
tvma2_20131225_Gr13_GG495_slit1.5_57002_1.fits                         
tvma2_20131226_Gr13_GG495_slit1.5_57002_1.fits                         

These files and those related of the 1dSPEC will not have the keywords of PESSTOEFOSC2dSPECTRA (they are the whole gr13+slit1.0+Free and gr13_slit1.5+GG495 comfigurations)
The keywords should be related to Gain and RON since that is what the pipeline writes at the end:
Keyword name 'ESO DET OUT1 GAIN' is greater than 8 characters or or contains spaces; a HIERARCH card will be created.
Keyword name 'ESO DET OUT1 RON' is greater than 8 characters or or contains spaces; a HIERARCH card will be created.

tLTT3864_20131202_Gr13_Free_slit1.0_57002_1.fits wanted a shift of 49, I denied and I did not use this standard
tCSS121015-004244+132827-star2_20131202_Gr13_GG495_slit1.5_57002_1 it is not a standard configuration (and I extracted the star instead of the SN since I realised later that was with a pivot angle and the true intention was not take a spectrum of a close star)
tOGLE-2013-SN-131_20131210_Gr13_Free_slit1.0_57002_1.fits broad trace indistiguishable what is the host and what the target
tPSNJ01462790-5840238_20131221_Gr11_Free_slit1.0_57002_1.fits it is not in the night log
tLSQ13ddu_20131222_Gr13_Free_slit1.0_57002_2.fits there is no trace
tSN2013ao_20131223_Gr11_Free_slit1.0_57002_1.fits and tSN2013ao_20131223_Gr11_Free_slit1.0_57002_2.fit very faint traces (noisy spectra)
tCSS121015_20131225_Gr13_GG495_slit1.5_57002_1.fits it is not a standard configuration.

Jan 2014

tMLS131226-043639+143734_20140102_Gr13_Free_slit1.0_57003_1.fits is noisy
tLSQ13dsu_20140108_Gr13_Free_slit1.0_57003_1.fits is really noisy
tPS1-14gw_20140129_Gr13_Free_slit1.0_57003_1.fits  no trace

Feb 2014

tOGLE-2014-SN-009_20140207_Gr13_Free_slit1.0_57004_1.fits trace interrupted in the middle and shifte of 10 pixels

Mar 2014

EFOSC.2014-03-01T00:01:34.623.fits
EFOSC.2014-03-01T00:04:28.269.fits
EFOSC.2014-03-01T00:06:50.044.fits

These three internal flats had a trace in it and sky lines. It the same problem that happened in December

LSQ14mo_20140307_Gr13_Free_slit1.0_57003_1.fits could have problems of wavelength calibration bluer than 4500 Ang due to the associated arc lamp

It looks that the Helium lamp for the wavlength calibration wasn't working properly (i checked the OB and the exptime of the two lamps are OK, since the Argon has more counts than the helium it looks like the faulty lamps was the helium ones, however the pipeline seems working fine)

Because of this the bluest line in the WAVE for gr16 is at 6500 Ang

tLSQ14abd_20140308_Gr16_OG530_slit1.0_57003_2.fits too noisy the image and the extracted spectrum as a consequence
tEG274_20140310_Gr11_Free_slit1.0_57003_1.fits pixels missing in the trace and, as a consequence, the extracted spectrum has a deep absorption (it happens before)
tEG274_20140310_Gr13_Free_slit1.0_57003_1.fits has the same problem

Apr/May 2014

Some flats were saturated

In april/May run the Helium lamp for the wavelength calibration seems even dimmer than february and March
RMS of wavelength it can increase of 0.05 with respect of those listed in the paper (30% of the time)
Because of this the bluest line visible in the WAVE for gr16 is at 6500 Ang (thatb is true until the 28th-29th of April)
The same problem affects the gr11 with sometimes no line visble before 4500 Ang, so I am avoiding to use a polynomial order higher than 4 (i.e. 5 in iraf)

From the 29th of April the Helium lamp seems working properly again.

L745a_20140420_Gr11_Free_slit1.5_57004_1.fits  has a bad wavelength calibration, to do not use.
For this I got this message:
/Users/Cosmo/Ureka/python/lib/python2.7/site-packages/numpy/core/_methods.py:55: RuntimeWarning: Mean of empty slice.
  warnings.warn("Mean of empty slice.", RuntimeWarning)
/Users/Cosmo/Ureka/python/lib/python2.7/site-packages/numpy/core/_methods.py:67: RuntimeWarning: invalid value encountered in double_scalars
  ret = ret.dtype.type(ret / rcount)
warning: problem to update header, try to correct header format ....
{'SPEC_RES': [nan, 'Spectral resolving power']}
error: not possible update header

EG274_20140422_Gr11_Free_slit1.5_57004_1.fits, same it is true for this one.
I got the message:
At least 3 points are required
warning: problem to update header, try to correct header format ....
{'SPEC_RES': [nan, 'Spectral resolving power']}
error: not possible update header

Bu the points, despite few, were 6

 tLSQ14mo_20140420_Gr13_Free_slit1.0_57004_1.fits almost no trace (and 2,3,4)
 tEG274_20140422_Gr13_Free_slit1.0_57004_1.fits not good

We have a no name SN --> tNo-Name_20140423_Gr16_OG530_slit1.0_57004_1.fits. It is CSS140421-142042+031602

tCSS140421142042+031602_20140428_Gr16_OG530_slit1.0_57004_2.fits (and 1) really faint trace
tMLS140425-152525-191348_20140429_Gr13_Free_slit1.0_57004_1.fits too noisy
tEG274_20140429_Gr13_Free_slit1.0_57004_1.fits is not good
tLTT7379_20140504_Gr16_OG530_slit1.0_57004_1.fits is not good
tLTT7379_20140504_Gr13_Free_slit1.0_57004_1.fits is not good
tLTT7379_20140504_Gr13_GG495_slit1.0_57004_1 is not good
tEG274_20140505_Gr13_Free_slit1.0_57004_1.fits is not good
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