[AstroPy] specutils loading FITS file

[Peter Teuben]

Jim

     I'd appreciate a link to an example of your fits spectrum. What 
instrument was used to take this?

peter

On 6/28/19 10:22 AM, James Dull wrote:
> Nick,
>
> I appreciate the response. Unfortunately, I am new to both python and 
> specutils so building my own loader is very difficult. I have tried 
> following the online instructions for doing this without success. 
> Perhaps my problem lies in not fully understanding the structure of my 
> fits files to begin with. I'll keep plugging away.
>
> Jim
>
>
>
> On Fri, Jun 28, 2019 at 7:53 AM Nicholas Earl <contact at nicholasearl.me 
> <mailto:contact at nicholasearl.me>> wrote:
>
>     Hey James,
>
>     Specutils dev here. Specutils does not have a FITS loader for
>     every data file (though we do have an extensive collection). I'd
>     suggest following the documentation
>     <https://specutils.readthedocs.io/en/latest/custom_loading.html#creating-a-custom-loader> on
>     creating a custom data loader for your FITS file. Likewise, if you
>     feel so inclined, you can submit a PR to the repository with the
>     loader you create so that others trying to load similar data files
>     won't have to create their own loaders.
>
>     If you're still unable to load the data file after having written
>     your data loader (or need help writing the data loader), please
>     open an issue on specutils github repo
>     <https://github.com/astropy/specutils/issues>. We're eager to make
>     specutils as usable as possible, so please let us know if you run
>     into trouble.
>
>     Cheers,
>     Nick
>
>     On Thu, Jun 27, 2019, at 5:59 PM, James Dull wrote:
>>
>>     I am currently trying to open a processed, high-resolution
>>     spectrum FITS file. I have tried many of the methods suggested
>>     online and yet cannot get the file to open without error. I can
>>     get get files to open from other sources. Depending on the
>>     version of the file used I get the following errors.
>>
>>
>>     InvalidSubimageSpecificationError: Cannot find a spectral axis in
>>     the provided WCS. Are your 'ctype's correct?
>>
>>
>>     Or
>>
>>
>>     IORegistryError: Format could not be identified.
>>
>>
>>     The FITS file was generated using The SkyX Pro. I have also tried
>>     to open the reduced FITS file created by the program ISIS.
>>
>>
>>     Any help would be greatly appreciated.
>>
>>
>>     Tucannon
>>
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