Publications of the Astronomical Society of the Pacific, Volume 106, Issues 695-702Astronomical Society of the Pacific, 1994 |
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Page 100
... pixels . Once the order position is determined through a six order polynomial relating rows versus col- umns spectra are stripped out by selecting the pixel the solution passes through rather than a weighted sum of the two closest pixels ...
... pixels . Once the order position is determined through a six order polynomial relating rows versus col- umns spectra are stripped out by selecting the pixel the solution passes through rather than a weighted sum of the two closest pixels ...
Page 103
... pixels . Schematically , the geometry of the WFC is very similar to that shown for the PC in Fig . 1 with 5 , 6 , 7 , 8 → 1 , 2 , 3 , 4 . 4. PIXEL SIZE MEASUREMENT In addition to the 12 PC parameters listed above , the Snapshot Survey ...
... pixels . Schematically , the geometry of the WFC is very similar to that shown for the PC in Fig . 1 with 5 , 6 , 7 , 8 → 1 , 2 , 3 , 4 . 4. PIXEL SIZE MEASUREMENT In addition to the 12 PC parameters listed above , the Snapshot Survey ...
Page 319
... pixel j along the dispersion direction of order m , Dmji is the data value of that pixel , and Єmji is the fractional weight of the pixel . The result is a J × M flat - field spectrum , where J is the length of the order in pixels and M ...
... pixel j along the dispersion direction of order m , Dmji is the data value of that pixel , and Єmji is the fractional weight of the pixel . The result is a J × M flat - field spectrum , where J is the length of the order in pixels and M ...
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absorption abundance accretion analysis asteroids Astronomical Society binary bright calibration catalog central star chromospheric clouds color comets correction derived detection detector diagram disk distribution eclipse emission errors estimate evolution expansion velocities Fe/H field flux frame function galactic galaxies GCLF giant branch globular clusters H II regions Hyades indices infrared ionized km s¹ light curve lines luminosity magnitude main sequence main-sequence mass measured MNRAS objects observations Observatory obtained open clusters optical orbital parameters PASP period phase photometric pixel planetary nebulae plotted quasars radial velocities radius range ratio red giants reddening redshift region residuals rotation sample scale scatter secondary solar sources spectral type spectroscopic spectrum standard stellar stellar winds subgiant survey Table telescope temperature tion turnoff values variability wavelength white dwarf width X-ray XX Vir