Archive for November, 2013

Comet ISON survives! (or not…)

By grigoris | Filed in Astronomy

A great gif image[1] of the passage of comet ISON (C/2012 S1) from the Sun, as observed from the SOHO coronagraph! As the initial image is rather big to upload here (~19MB), I just took some parts of it only, with the most interesting parts. A systematic campaign has been launched for this comet [2], […]

As bash is not able to handle floats the best way is to convert a float number (which is represented as a string, for example an output with awk) into an integer. To do this [1,2]: float=1.23 int=${float%.*} Refs: [1] Stackexchange.com/Unix & Linux [2] Linuxquestions.org

Fast note on Wien’s law

By grigoris | Filed in Astronomy

Just a quick reminder* ! λmax = 2.89776829 x 106 nm K / T [*] Wien’s displacement law

Much simpler than I thought, but still I think it deserves a note in order not to forget it! Simple add the * when using each element (figure/table)[1]. This will place it as wide as the page, but only at the top of the page. [1]: LaTeX wiki: Floats, Figures and Captions

After having looked and searched into the whole IRAF/PyRAF directory to point out the directory that contains the template spectra for the stsdas/synphot package it was just a matter of a quick look at the front page of the package to resolve the issue! As it is said: “Since the data files used by synphot […]