| proportional counter array | PCA | 80 | 11 | 2.001485 | 0112360,0112439,etc |
| all sky monitor | ASM | 51 | 8 | 2.001408 | 0112217,0112154,etc |
| advanced ccd imaging spectrometer | ACIS | 41 | 6 | 2.001306 | 0112112,0112346,etc |
| kolmogorov smirnov | KS | 32 | 6 | 1.000419 | 0112517,0112343,etc |
| inverse compton | IC | 43 | 5 | 2.001637 | 0112311,0112177,etc |
| phase dispersion minimization | PDM | 4 | 4 | 1.000619 | 0112238,0112271,etc |
| x ray luminosity function | XLF | 18 | 4 | 2.001485 | 0112530,0112252,etc |
| power law | PL | 45 | 4 | 2.001067 | 0112322,0112484,etc |
| signal to noise | S/N | 14 | 4 | 2.000397 | 0112104,0112433,etc |
| high energy x ray timing experiment | HEXTE | 27 | 4 | 1.000936 | 0112439,0112154,etc |
| wide field camera | WFC | 31 | 4 | 1.002173 | 0112353,0112066,etc |
| sunyaev zel'dovich | SZ | 71 | 4 | 2.002637 | 0112013,0112408,etc |
| charge transfer inefficiency | CTI | 25 | 4 | 1.000681 | 0112257,0112041,etc |
| high frequency instrument | HFI | 42 | 4 | 1.003795 | 0112277,0112276,etc |
| ultra luminous infrared galaxy | ULIRG | 18 | 3 | 2.000815 | 0112559,0112141,etc |
| blue compact dwarf | BCD | 35 | 3 | 2.002098 | 0112348,0112235,etc |
| space telescope imaging spectrograph | STIS | 48 | 3 | 2.000966 | 0112424,0112352,etc |
| time of arrival | TOA | 14 | 3 | 1.000179 | 0112106,0112019,etc |
| color magnitude | CM | 16 | 3 | 2.000523 | 0112111,0112349,etc |
| goddard high resolution spectrograph | GHRS | 10 | 3 | 1.00028 | 0112297,0112296,etc |
| power density spectrum | PDS | 41 | 3 | 2.00136 | 0112217,0112154,etc |
| full width half maximum | FWHM | 17 | 3 | 2.000998 | 0112521,0112468,etc |
| faint object spectrograph | FOS | 69 | 3 | 2.000948 | 0112153,0112257,etc |
| max planck institute for astronomy | MPIA | 3 | 3 | 1.000118 | 0112075,0112397,etc |
| astrophysical research consortium | ARC | 4 | 3 | 1.000119 | 0112075,0112397,etc |
| colour magnitude diagram | CMD | 235 | 3 | 2.000861 | 0112283,0112331,etc |
| lyon meudon extragalactic database | LEDA | 4 | 3 | 1.000151 | 0112082,0112288,etc |
| friedmann robertson walker | FRW | 18 | 3 | 1.001498 | 0112139,0112524,etc |
| planetary camera | PC | 35 | 3 | 2.000537 | 0112414,0112527,etc |
| proportional counter unit | PCU | 14 | 3 | 2.000499 | 0112019,0112468,etc |
| low energy concentrator spectrometer | LECS | 37 | 3 | 1.002738 | 0112311,0112337,etc |
| low surface brightness | LSB | 12 | 3 | 2.000101 | 0112255,0112235,etc |
| short wavelength spectrometer | SWS | 41 | 3 | 2.003697 | 0112339,0112400,etc |
| synchrotron self compton | SSC | 28 | 3 | 2.000691 | 0112257,0112314,etc |
| inter galactic medium | IGM | 15 | 3 | 2.002359 | 0112570,0112088,etc |