Archive for June, 2014

Retrieve header key with gethead

By grigoris | Filed in Astronomy

A quick note on gethead of WCSTools – as I have needed many times (but obviously not that many to remember it!). Rather straightforward use: gethead HEADER_KEY image.fits (as simple as possibly!) If HEADER_KEY contains empty spaces then use double quotes, e.g. “HIERARCH TEL AIRM END”. Reminder: you have to have installed already the WCSTools! […]

After a long time I finally managed to understand how to use IRAF’s sbands, along with a standard star and a filter. 1. If you want to use a spectrum from the standard star library of IRAF, you have to convert it from a .dat file to an image file .fits – Spectra files located […]

Struggling with BibTeX ???

By grigoris | Filed in Astronomy

Ok, it is time to try this promising thing called BibTeX [1,2,3], which allows you to use only one file with references* (suppose MyBibTeX.bib). Then, it easy to add references in any document just by simple adding the file and the citations. Although it seems rather straightforward hot to make the file its implementation is […]

Tags: ,