Function: r.a. and dec. shifts produced by differential atmospheric refraction
Syntax: int_daref infile outfile
Parameters:
An example of input file (example.ref):
| *************** Temperature ********************************* |
| 15.9 |
| *************** Pressure ************************************** |
| 575.0 |
| *************** Object *************************************** |
| test |
| *************** Number of images ***************************** |
| 2 |
| *************** Number of wavelength ************************* |
| 3 |
| *************** Wavelength in microns ************************* |
| 0.4000 |
| 0.7000 |
| 0.8000 |
| *** Object right ascension in hours,minutes y seconds************** |
| 0.0 |
| 10.0 |
| 20.0 |
| *** Object declination in grades, minutes and arc seconds********** |
| 30.0 |
| 40.0 |
| 50.0 |
| **** La Palma latitude in grades, minutes and arc seconds********* |
| 28.0 |
| 45.0 |
| 34.0 |
| ******** TSLstart(h,m,s) and texposed (seconds)***************** |
| 01.0 09.0 08.69 1800.0 |
| 02.0 53.0 22.30 1800.0 |
| ******************** Output files***************************** |
| ref1.test |
| ref2.test |
| ******************** Output file***************************** |
| refdata.out |
You can edit and change the temperature and pressure (corresponding to the observing night), the name of the object, the wavelength/s (and the number of wavelength/s), the r.a. and dec. of the object, the TSLstart and texposed (and the number of images), and the names (in this case, ref1.test and ref2.test) of the output files, which contains r.a.*cos(dec.) and dec. shifts for the object. The output file (refdata.out, according to our example) contains the above parameters and other parameters like the paralactic angle, zenith distance (z), Local Sidereal Time (LST) and hour angle (h).