000002478 001__ 2478
000002478 005__ 20160701171706.0
000002478 037__ $$aASTROimport-635
000002478 100__ $$aŠkoda, P.
000002478 245__ $$aMerging of Spectral Orders from Fiber Echelle Spectrographs
000002478 260__ $$c2003
000002478 520__ $$aWe review the data reduction of two fiber-based echelle spectrographs (HEROS and FEROS)  with emphasis on the similarity of the inconsistencies between the overlap of spectral orders before merging. The literature on echelle data reduction shows that such inconsistencies are commonly observed and usually handled by rather heuristic interactive procedures. For both instruments it seems to be  the calibration unit that introduces the bulk of the problem through errors in the flat field. We discuss strategies to treat the problem and to remove the inconsistencies before merging the spectral orders with minimal use of interactive, subjective algorithms. 
000002478 700__ $$a Hensberge, H.
000002478 773__ $$c415$$pAstronomical Data Analysis Software and Systems XII$$v295$$y2003
000002478 85642 $$ahttp://esoads.eso.org/abs/2003ASPC..295..415S
000002478 905__ $$apublished in
000002478 980__ $$aNONREF