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Hello everyone

It seems that I cannot open any .fit file from the Spectrum library or any other .fit attached in posts in the forum.

I have used 3-4 software and none can open them.

Does anyone else have this problem?
I am using Win7.

Greetings
Alex

_________________
Everything is Mathematics !

Hello Alex!

Did you try it with fitswork already?

http://www.fitswork.de/software/

greetings

Gerhard

Hello

yes but still the problem exists.

_________________
Everything is Mathematics !

Hello Alexandros,

I tried just to open the new spectrum of Thierry Garel in "Request for observations of the 2mag star delta Orionis". IRIS, ISIS, VSpec and Maxim DL wasn't able to open the fit-file. Only Audela was able.
I don't know the reasons for that.

_________________
Herzliche Grüße / best regards

Lothar

https://lotharschanne.wordpress.com/

I dodn?t have any problem opening Thierry?s del Ori spectra in ISIS or VSpec. Maxim DL never could open 1D spectra

Cheers, Bernard


From: Lothar Schanne (fg-spek-comp@vdsastro.de)
Sent: Sunday, December 02, 2012 11:47 PM
To: fg-spek-comp@vdsastro.de (fg-spek-comp@vdsastro.de)
Subject: [fg-spek] Re: Problem with .fit files from this forum




Hello Alexandros,

I tried just to open the new spectrum of Thierry Garel in "Request for observations of the 2mag star delta Orionis". IRIS, ISIS, VSpec and Maxim DL wasn't able to open the fit-file. Only Audela was able.
I don't know the reasons for that.



Herzliche Grüße

Lothar

www.astrospectroscopy.eu
www.spectrosphere.de





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_________________
Quicquid Nitet Notandum

I have no problems with the fits files here, I just download and drag and drop them into Visual Spec for example

Cheers
Robin

Hello

thank you all for your input.

IRAF also cannot open Thierry's fit.

VSpec cannot be installed on my Win version( Win7 Home premium 64 bit.)

I tried once more with IRIS.
I managed to open the file but i had to go to the ''Profile'' tab and search for the fit.

I don't know why but each software was reporting a different error.
E.g. IRIS-''not wnough memory''.
ISIS- something in French about 2-xis .fit.

other software were reporting that the files cannot be read as fit files.

By thw way BASS can open it with no complaints.

_________________
Everything is Mathematics !

Hello Alexandros,

you can verify a fits file with fitsverify from

http://heasarc.gsfc.nasa.gov/docs/softw ... itsverify/


/////////////////////////////////////////////////////////////
fitsverify -l 20121130-224720-Delori-3x600s-P_1C_34.fit


fitsverify 4.16 (CFITSIO V3.250)
--------------------------------


File: Downloads/20121130-224720-Delori-3x600s-P_1C_34.fit

1 Header-Data Units in this file.

=================== HDU 1: Primary Array ===================

1 | SIMPLE = T / file does conform to FITS
standard
2 | BITPIX = -32 / number of bits per data pixel
3 | NAXIS = 1 / number of data axes
4 | NAXIS1 = 2130 / length of data axis 1
5 | EXTEND = T / FITS dataset may contain
extensions
6 | COMMENT FITS (Flexible Image Transport System) format is
defined in 'Astronomy
7 | OBJNAME = 'Del ori ' / Current name of the object
8 | DATE-OBS= '2012-11-30T22:47:20.28' / [Iso 8601] Start of
exposure. FITS standard
9 | DATE-END= '2012-11-30T23:17:45.72' / [Iso 8601] Start of
exposure. FITS standard
10 | EXPOSURE= 1800. / Total time of exposure
11 | BSS_SITE= 'Fontcaude' / Site name
12 | DETNAM = 'ST10XME ' / Camera name
13 | INSTRUME= 'eShel_T_Garrel' / Spectrograph name
14 | TELESCOP= '0.35m f5 TGarrel' / Telescop
15 | BSS_VHEL= '0 ' / Heliocentric correction
16 | BSS_TELL= 'no correction' / Atmospheric line correction
17 | BSS_NORM= 'no correction' / Continuum normalisation
18 | OBSERVER= 'Thierry Garrel' / Observer names
19 | BSS_ORD = '20121130-224720-Delori-3x600s-P_1C_' / generic file
name
20 | BSS_INST= 'DeniSe ' / configuration name
21 | BSS_RA = ' 83.000000' / [degrees] Object right ascension
22 | BSS_DEC = ' -0.298889' / [degrees] Object declination
23 | CRVAL1 = 6486.1 / Minimum wavelength
24 | CDELT1 = 0.1 / Dispersion
25 | CUNIT1 = 'Angstrom' / Unit of wavelength
26 | CRPIX1 = 1 / Reference pixel
27 | CTYPE1 = 'wavelength' / Type of X data
28 | EQUIPMEN= 'eshell ST10XME R=11000' / System which created data
via the camera
29 | END

29 header keywords

32-bit floating point pixels, 1 axes (2130),

++++++++++++++++++++++ Error Summary ++++++++++++++++++++++

HDU# Name (version) Type Warnings Errors
1 Primary Array 0 0

**** Verification found 0 warning(s) and 0 error(s). ****
/////////////////////////////////////////////////////////////////

_________________
Im längsten Frieden spricht der Mensch nicht so viel Unsinn und Unwahrheit als im kürzesten Kriege. (Jean Paul)

Hi Alex,

Maybe I?m wrong but I get the impression that you are assuming that all FIT files are the same format. The spectral file you are trying to view is what is called a ?1D? (one dimensional) type as it basically a tabular listing of wavelength vs. amplitude values and that type of FIT does need a ?spectroscopy? friendly program to view with ... VSpec, ISIS, IRIS, Rspec, SPAudace, Audela, IRAF, MIDAS etc. The more commonly known FIT format is the 2D (two dimensional) image type which is used to record our ?pretty picture ? and photometry images, and that is the only FIT type that Maxim DL (and most other software) knows about. I have no problem viewing Thierry?s spectra with ISIS, VSpec or Audela.

I?m surprised you have a problem running VSpec with Win7-64 as I?m sure I?ve read that others can.

Cheers, Bernard




From: Alexandros Filothodoros (fg-spek-comp@vdsastro.de)
Sent: Monday, December 03, 2012 3:46 AM
To: fg-spek-comp@vdsastro.de (fg-spek-comp@vdsastro.de)
Subject: [fg-spek] Re: Problem with .fit files from this forum




Hello

thank you all for your input.

IRAF also cannot open Thierry's fit.

VSpec cannot be installed on my Win version( Win7 Home premium 64 bit.)

I tried once more with IRIS.
I managed to open the file but i had to go to the ''Profile'' tab and search for the fit.

I don't know why but each software was reporting a different error.
E.g. IRIS-''not wnough memory''.
ISIS- something in French about 2-xis .fit.

other software were reporting that the files cannot be read as fit files.



Everything is Mathematics !






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Checked by AVG - www.avg.com
Version: 2013.0.2793 / Virus Database: 2634/5931 - Release Date: 12/01/12

_________________
Quicquid Nitet Notandum

Hello

I am only talking about fits from other spectroscopists.
Particularly I can see Thierry's spectrum only with BASS and ISIS if I open it as described above.

So I guess that this is the case about MAximDL, Fitswork and other software used mainly to process ''normal'' fits.

_________________
Everything is Mathematics !

Hi Alex

I can open it in all the programs I have which can handle 1D fits files. It definitely opens in Vspec. Note it is a 1D fits file, not a 2D image so you must open it as a profile in ISIS and VSpec, not an image.

There is no such thing as a "normal" fits. The fits file format is just a way of storing tables of data which can be anything. Astrophotographers usually first come across images stored as fits files and are surprised when they find it is actually used to store any astronomical information. MaximDL and other imaging software generally cannot handle fits data except as an image.

Cheers
Robin

Looking at your screen shot, it does not look like BASS has opened it correctly. It has not displayed the calibrated wavelength. (It has just interpreted it as an image and displayed the pixel values along the row. Compare with ISIS for example which displays it correctly calibrated.

Cheers
Robin

Are you installing and running as administrator? This is the usual reason it cannot be installed. See the note 5 at the bottom of this page
http://www.astrosurf.com/vdesnoux/download1.html

Robin

Hi Robin,

While I agree that there is no ?normal? FIT file format when I used that term it was in the context that the FIT file 99% of amateurs come across is the 2D image format ... most amateurs probably never realise that there are other FIT types.

Cheers, Bernard


From: Robin Leadbeater (fg-spek-comp@vdsastro.de)
Sent: Tuesday, December 04, 2012 3:12 AM
To: fg-spek-comp@vdsastro.de (fg-spek-comp@vdsastro.de)
Subject: [fg-spek] Re: Problem with .fit files from this forum




Alexandros Filothodoros wrote: Hello

I am only talking about fits from other spectroscopists.
Particularly I can see Thierry's spectrum only with BASS and ISIS if I open it as described above.

So I guess that this is the case about MAximDL, Fitswork and other software used mainly to process ''normal'' fits.

Hi Alex

I can open it in all the programs I have which can handle 1D fits files. It definitely opens in Vspec. Note it is a 1D fits file, not a 2D image so you must open it as a profile in ISIS and VSpec, not an image.

There is no such thing as a "normal" fits. The fits file format is just a way of storing tables of data which can be anything. Astrophotographers usually first come across images stored as fits files and are surprised when they find it is actually used to store any astronomical information. MaximDL and other imaging software generally cannot handle fits data except as an image.

Cheers
Robin





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Checked by AVG - www.avg.com
Version: 2013.0.2793 / Virus Database: 2634/5933 - Release Date: 12/02/12

_________________
Quicquid Nitet Notandum

Hello,

if you do not know what is the content of the FIT file, then you can use fv:
http://heasarc.gsfc.nasa.gov/ftools/fv
to inspect it (the header should indicate the type and other details). It has opened for me even multi order echelle spectra and all kind of tables. You can also save the relevant columns of the table, e.g. if the spectra are shown with S/N info you can eliminate this column and save the file in a form readable with VSPEC or whatever you prefer.

Regards,

Martin