4. Quick look & Scan monitor
The monitor display of “Quick look & Scan monitor” looks, for example, likethis as shown in the next picture.
Quick Look & Scan Monitor Display

This display has mainly two functions; quick look of observing spectra andscan monitor of the telescope.

The scan monitor means that it showsgraphically a position where telescope is pointing every moment in the sky, e.g.
an OFF position or ON position within, for example, a mapping grid.
4.1 Quick look
After starting the observations, you can immediately see observed raw spectra.
From the “Quick-look for line observation” window as follows, please selectdisplay modes if necessary; individual scan mode or integration mode, X-axis
unit and range, and Y-axis range (these modes can also be changed later from apull-down menu of each spectrum).
look at.

Then click name(s) of AOS you want toQuick Look for Line Observation Window

An example of quick look of a spectrum is shown below.

Example of Quick Look of Spectra

Please check this quick look at least in the beginning of the observations to see
whether the data is properly obtained.

From the pull-down menu of the quick

look window, it is possible to change the integration mode (individual scan orintegration), the display range (e.g. enlarge, full-range) of the spectrum, and theunit of the X-axis (velocity, frequency, and channel).

It is also possible toenlarge the spectrum by drawing a box on the spectrum with mouse.

To readaccurate intensity, it is generally necessary to enlarge the spectrum, in particular,
for narrow lines, because limited number of channel points can be displayed inthe window.
In case of pointing observations (5 points cross scans), a method to see thequick look is basically the same.

Displayed spectra are arranged like crossdirections as shown below to easily see pointing deviations intuitively.

Quick Look Window for Pointing

To calculate pointing offsets to be corrected by fitting data of cross scans, youneed to provide baseline ranges and a line (SiO) range in a “Signal base range
dialog” window.

To show this window, please select “Change signal baserange” from a pull-down menu of “Options” as shown below.

Quick Look Window for Pointing with a pull-down menu of“Options”

Then “Signal base range dialog” window appears.

Please set by mouse (fromleft to right) two positions to indicate a left baseline range, two positions for a line(SiO) range, and two positions to indicate a right baseline range as shown below.
Then click “OK”.

Signal Base Range Dialog

Left baseline rangeLine(SiO)

Rightbaseline range
The pointing offsets and beam sizes are displayed in the lower right corner of thequick look window.
cross scans.

It is possible to calculate averages of results of several

A starting sequence number for average can be selected byclicking _ and/or _ buttons in the quick look window.

If you obtain reliableoffsets (and beam sizes which are about 39 arcsec in ideal case), you can apply
them for correction in the “AZEL offset” window as shown below.

Please typethe correction values (arcsec) in the “ddAZ” and/or “ddEL” input box(es) (withoutchanging the sign), and then click “ddAZ” and/or ”ddEL” button(s).
corrections will become effective, when the telescope is at an OFF position.

TheAZEL Offset Window

In case of BEARS, please click “Mult” button in the “Quick-look for lineobservation” window. An example of quick look is shown below.

Quick Look Window for BEARS

The function of quick look for BEARS is basically the same as that for the single
beam receivers.

In addition, a coordinate for each spectrum is added, and aposition of the rotational stage of BEARS is schematically shown.
4.2 Scan monitor
The scan monitor window looks like this as shown below.
example when pointing observations are done.

This is anThe 5 points cross scan isindicated graphically.

This window has functions of zoom, print, etc.

Thismonitor is particularly useful to check observing points and progress of mapping
observations.

Please check this scan monitor occasionally, in particular, duringmapping observations (including pointing) whether the telescope is moving as
the observers intended.

Scan parameters as defined in your “scan table” madewith the OBSTABLE software are also shown in the left side of this window.
Scan Monitor Window