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Final Datasets for HD208816



Dataset Range Texp MJD QF
UVSUM_1X_50781 FITS ETC 1150-3158 4200 50781 92
UVSUM_2X_50893-50894 FITS ETC 1150-3158 4200 50893 90
UVSUM_3X_51008 FITS ETC 1150-3146 4200 51008 91
UVSUM_4X_51026 FITS ETC 1607-3146 3016 51026 93
UVSUM_5X_51044-51045 FITS ETC 1607-3159 2102 51044 93
UVSUM_6X_51064 FITS ETC 1150-3159 3480 51064 90
UVSUM_7X_51079 FITS ETC 1607-3159 2102 51079 93
UVSUM_8X_51099 FITS ETC 1607-3158 2102 51099 94
UVSUM_9X_51118 FITS ETC 1150-3158 3480 51118 92
UVSUM_10X_51148-51149 FITS ETC 1607-3158 2160 51148 95
UVSUM_11X_51176 FITS ETC 1150-3158 3480 51176 93
UVSUM_12X_51231-51232 FITS ETC 1150-3158 2010 51231 92
UVSUM_13X_51288 FITS ETC 1150-3158 2010 51288 93
UVSUM_14X_51345 FITS ETC 1150-3146 2010 51345 92
UVSUM_15X_51402 FITS ETC 1150-3159 2760 51402 93
UVSUM_16X_51682 FITS ETC 1150-3146 2760 51682 94
UVSUM_17X_51794 FITS ETC 1150-3159 2200 51794 94
UVSUM_18X_51962 FITS ETC 1150-3158 2760 51962 93
UVSUM_19X_52129 FITS ETC 1150-3159 2200 52129 94
UVSUM_20X_52519 FITS ETC 1150-3159 2760 52519 91
UVSUM_21X_52907 FITS ETC 1150-3158 2200 52907 94

Notes. Range is in Å. Texp is maximum monochromatic exposure (seconds), accounting for coadditions and splices. MJD is first start date of a sequence. "QF" is a quality factor (0-100).


Preview. In main panel, first spectrum is blue and its photometric error (2σ) red. For additional spectra, second is green and its photometric error orange; third is black, and color coding repeats for n>3. Only first two error curves are shown. Flux density and error tracings were heavily smoothed for display. Fluxes are clipped at photometric error. For weak spectra, error tracing dominates. Highly structured error curve tracks rapidly varying "echelle ripple" sensitivity.

Right panel depicts observation time line. Each exposure start is marked by a vertical bar spanning λ range of mode (bottom of frame is 1000 Å; top, 3300 Å). Gray shading delimits FUV modes; upper unshaded zone, NUV. Color coding: orange E140M, blue E140H, green E230M, red E230H.


Data table. Dataset column drills down to next layer: contributing exposures. Bottom-most level: o-type subexposures (if n>1). FITS returns FITS file containing data products. EXTEN=0 is header describing target, observation, and processing history (if applicable). EXTEN=1 holds wavelength, flux, photometric error, and data quality flag. If dataset is o-type with two or more subexposures, EXTEN=1 is coadded spectrum, subexp 1 is in EXTEN=2, subexp 2 in EXTEN=3, and so forth.


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