how to.. change resolution

flame wrote on Aug 07, 2006

Hi!
I need to reduce resolution of my spectra from R=47000 to R=22000
but I don't know which iraf task does it.
Someone can help me?

Thanks!

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Mike Fitzpatrick wrote on Aug 07, 2006

See the DISPCOR task for rebinning spectra. The parameters are given in terms of start/ending wavelength and wavelength-per-pixel increments or number of points rather than 'R' but you should be able to compute the values. Note this is not the same as convolving the spectra to decrease the resolution (see CONVOLVE or GAUSS amongst others), it is a reinterpolation of the data at different wavelength points.

Cheers,
-Mike

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Last post on Aug 07, 2006