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p3d for Linux, Mac OS X 2.2.4.1 freeware
... tool can be useful for people who have access to astronomical data of such an instrument. Data-reduction tasks, which are performed by p3d, convert raw data of CCD detectors into extracted spectra that can thereafter be used for scientific purposes. ...
| Author | Christer Sandin |
| Released | 2013-06-21 |
| Filesize | 10 kB |
| Downloads | 563 |
| OS | Linux, Mac OS X |
| Installation | Instal And Uninstall |
| Keywords | field spectrograph, data reduction, astronomical data, reduction, reduce, spectrograph |
| Users' rating (11 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 |
