When prompted for line ID of the target spectrum

hit "<return>" to start the identification process

in plot window, go to pixel 52 with the cursor

press "m"
enter 175860.

go to pixel 234 

press "m"
enter 231990

type "f" to go to the fitting window

type "q" to go back to the wavelength display

mark other features and take the default IDs--

type "m" near the following positions,
type <return> when the ID comes up

about pixel 228   229410.
about pixel 215   225950.
about pixel 192   218550.
about pixel 169   211750.
about pixel 152   206530.
about pixel 141   203220.
about pixel 109   193100.
about pixel  98   190150.
about pixel  76   182980.

(if no ID comes up, the file of values is not 
properly found...then type the values above)

type "f" again to go to the fitting window

in this case use a linear fit--

type ":order 2"

type "f" to re-fit the points

There is no obvious non-linearity, so take this fit.  The 
precision of the wavelength fit is limited by the use of 
bands rather than individual lines to find the wavelength
solution.

type "q" to exit the fitting window, 
type q to quit the wavelength ID function

When asked about fitting the dispersion function interactively

hit <return> to select "NO"

The same process as above is followed again for the standard star.

The next step is extracting the aperture spectrum.  When asked
if one wants to find apertures interactively 

respond "yes"  (normally just "<return>" works for this)

Do the same for the resize and edit functions.

Set the aperture using either 

by positioning the cursor and typing the 

"l" and "u" keys 

to mark the lower and upper limits

or with colon commands.

:low -30.0
:high 18.0


Then fit the baseline: type 

b
t
 
position the cursor where you want to mark regions and type 

s and s, 
s and s 

to select background regions around +30 to +60 and -40 to -70

f
q

q (if satisfied with selected aperture, or type "b" to try again

Then in response to prompts type

yes or <return>   to trace the aperture, 
yes or <return>   to fit the trace interactively, and 
yes or <return>   to fit curve interactively

Start the fitting process--

:order 2
f
q                  when satisfied with the fit
yes or <return>    for write apertures
yes or <return>    for extract spectra
yes or <return>    for view extracted spectrum
q

Carry out the same process for the standard star--

yes or <return>    for find apertures
yes or <return>    for resize apertures
yes or <return>    for edit apertures

:lower -10.
:upper +10.
b
t
s
s
s
s
f

q
yes or <return>    for trace apertures
yes or <return>    for fit fraced positions
yes or <return>    for fit curve interactively

use "d"            to remove obviously bad points at the ends

type "f"           to re-fit

:order 2
f

:order 3
f
q                  once happy with the fit

yes or <return>    for write apertures
yes or <return>    for extact spectra
yes or <return>    for review extracted spectra
yes or <return>    for review aperture one spectrum
q

q                  windowed cal spectrum
q                  windowed source spectrum

yes or <return>    for search interactively

:offset 0.
:dscale 0.
:shift 0.

use "s"            to select useful regions of the spectrum

use "a"            to autofit with the new regions.

Set the shift and scale values until a good result is found...

q to quit
q 
q

q