10.1 Merging Two Spectra

The procedure IUEMERGE may be used to join together two spectra with adjoining wavelength regions (e.g., SWP and LWP spectra, or adjacent orders in a high dispersion spectrum). The newsips keyword should be set if your spectra were processed with NEWSIPS so that IUEMERGE will realize that the quality flags (q1 and q2) are $\nu$ flags; otherwise they will be considered to be $\epsilon$ flags. The calling sequence is:

IUEMERGE,W1,F1,q1,W2,F2,q2,KIND,W3,F3,q3,/newsips 

W1,F1,q1	Wavelengths, fluxes, and optional quality flags for first input spectrum.
W2,F2,q2	Wavelengths, fluxes, and optional quality flags for second input spectrum.
KIND	The type of merging desired: $\lambda$ Splice vectors where the wavelength vectors equal $\lambda$(Å. In this case, the values of ``W1'' must be smaller than the values of ``W2''. Example: IUEMERGE,w1,f1,q1,w2,f2,q2,2000,w3,f3,q3 will result in ``W3'', ``F3'', and ``E3'' being equal to ``W1'', ``F1'', and ``E1'' in the region <2000 Å but equal to ``W2'', ``F2'', and ``E2'' in the region >2000 Å. 'A' Average the fluxes in the region of overlap. Resample ``F2'' to the same wavelengths as ``W1'' and average ``F1'' and ``F2'' (weighted by ``Q1'' and ``Q2'', if they are present). 'M' Merge (concatenate) all values of ``W1'' and ``W2'', ``F1'' and ``F2'', and ``Q1'' and ``Q2'', keeping all data points.
W3,F3,q3	Output (merged) wavelengths, fluxes, and optional quality flags.

You must either include no quality flags whatsoever, or include q1, q2, and q3.