png preview

Co-Added Dataset obkk64040



Dataset MODE−λcen Aper Range Texp MJD QF Vshft XC / Fscl
obkk64040_1 E140M-1425 0.2×0.2 1140−1729 1527 55853.071 5 +0.00 1295.57 [0.25]
obkk64040_2 E140M-1425 0.2×0.2 1140−1729 1527 55853.091 5 −0.91 0.985

Notes. Aper is abbreviated aperture code (0.2×0.2= 0.2″×0.2″). Spectral Range is in Å. Texp is integration time (in s). MJD is U.T. start time of each sub-exposure. QF is quality factor (average S/N per resel) . Vshft is wavelength correction (in km/s) derived by cross-correlation relative to first spectrum listed. Datasets normally are time-ordered, unless later sub-exposure of the sequence had significantly higher throughput, in which case it would be in first position. Cross-correlation template parameters (XC: λ and [Δλ], in Å), if any, are provided for first spectrum, but refer to entire group. Null template ("∼") indicates simple co-addition (no shifts). Values in that column for subsequent datasets are flux scale factors (Fscl) relative to leading spectrum (for which Fscl= 1). Wavelengths and fluxes for sub-exposure "_n" can be found in FITS extension n+1 of co-added dataset obkk64040.

Home