Kepler is a space based telescope to study a small area between Cygnus and Lyra for exoplanet transits of all possible targets but mainly to find Earth sized candidates in the habitable zone. A fist publication reveals these numbers: “On 1 February 2011 the Kepler Mission released data for 156,453 …
Sometimes, a variable may be needed to get inside awk (for or while loop for example). In order to pass the variable inside awk, include it like: awk -v i=$i ‘{ .. }’ test
In order to get a specific field from the header of a file you can use the command: cl> imhead inage.fit l+ | grep name_of_field In case you want to do it for many files you just use the wildcard: cl> imhead inage*.fit l+ | grep name_of_field Not very sophisticated …
IRAF has a variety of tools but more packages can be added really easy (when there are precompiled binaries at least!). Download the package you want (let it be … testpackage-1.4.0) and extract it inside the directory /pathto/iraf/extern/ ,where all external packages are placed [if scisoft is installed then the …