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p3d for Linux, Mac OS X 2.2.4.1 freeware
... field spectrographs (IFSs). This tool can be useful for people who have access to astronomical data of ... into extracted spectra that can thereafter be used for scientific purposes. ...
| Author | Christer Sandin |
| Released | 2013-06-21 |
| Filesize | 10 kB |
| Downloads | 594 |
| OS | Linux, Mac OS X |
| Installation | Instal And Uninstall |
| Keywords | field spectrograph, data reduction, astronomical data, reduction, reduce, spectrograph |
| Users' rating (15 rating) |
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| 2.2.4.1 | Jun 21, 2013 | New Release | All tools that combine raw-data images: · Major bug fix - When I optimized the C routine of the image combination routine I introduced a serious bug. This bug is present in revisions 2753-2779 of p3d_cimcom.c, and is fixed with revision >=2780 C routines: · Optimization - Optimized the C routines p3d_cpixex.c and p3d_cmpd.c |
| 2.1.1 Rev161 | Feb 7, 2012 | New Release | Combining multiple files with extracted data (p3d_cexposure): · New functionality. · Added a new tool that combines mutliple extracted exposures that are · taken illuminating the exact same field on the sky. The supplied data · are at first checked for consistency in image size and equal values on · the wavelength calibration parameters CRVAL and CDELT. Thereafter the · files are either averaged, weighting with the exposure time of the · individual exposures. Alternatively, setting the /SATURATED keyword it · is expected that all files have a different exposure time. In this case · the longest exposure is used as reference. Portions of individual · spectra, where a mask indicates that a pixel was saturated, are then · replaced with scaled data of the same spectrum and portion of a file · using a shorter exposure time. The routine accepts any number of files. · The routine produces one output file with merged data, and a file with |
| 2.1 Rev1529 | Jan 18, 2012 | New Release | Correction for differential atmospheric refraction (p3d_darc): · Added a new tool that corrects extracted science images for differential · atmospheric refraction. The new tool works out-of-the-box with all the · IFUs that use square-shaped spatial elements (VIMOS, FLAMES, PMAS/Larr, · MPFS, and SPIRAL). In some cases the required physical properties are · unavailable in the data header. In that case they must be entered by · hand. · The routine allows the user to choose between three implemented · approaches to calculate the offsets. The results of all three approaches · are collected in a plot, which allows the user to choose the most · accurate method as he or she believes is more correct. · The offsets are calculated using the wavelength-dependent · refractive-index equation of Ciddor (1996; as well as Edlén 1966). · A second approach uses a height-integrating approach to calculate the · refractive-index that comes from the Starlink project. The routine |
