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I've reinstalled but still the same error: This is gnu.txt: cd 'c:\\program files (x86)\\isis\\star analyser tutorial\\' call 'c:\\program files (x86)\\gnuplot\\std.gnu' 'c:\\program files (x86)\\isis\\star analyser tutorial\\@.dat' 'alpha_trial3' '4000:6800' '0:3' '640, 480' '.png' pause -1 The &qu...

Martin,
yes I downloaded gnuplot V4.6 and the files listed... still no success under ISIS

Hmmm
That's interesting...
If I import the ISIS profile into Vspec and call up gnuplot - the gnuplot screen comes up, with the correct file names etc - and it plots the profile graph OK!!!!
(After ISIS I looked at the gnu.txt file it seems to be calling up the @.fit file to plot????)

I've installed gnuplot (hopefully correctly!) and pointed ISIS to the gnu folder...
When I try to plot a calibrated profile (as per the Tut example) - nothing appears...I get the message that a .png file has been written to my working directory...but's there's nothing there!!
What am I missing??

Thanks Valerie!!
All fixed in the latest release.

There's minimal (<10%) improvement using a grism with the SA100. It's benefits kick in with gratings >200 l/mm due to the increased dispersion. (In Christian's example the benefit is in the 2nd order ie equivalent to a 200 l/mm in 1sr order) Adding a UV-IR filter just limits the wavelengths recorded...

Question for Valerie....
The translation function in the latest Vspec doesn't seem to work with uncalibrated spectral profiles?
The "pixel" unit screen comes up but no results....
Can you help me??
Ken