Select an MJD and print its log page.
Reduced data are in /home/au/reduced. The directory names here are the modified Julian dates of the observations. We'll use 52006 as an example. Go to the PT Logs and find the entry for the mjd. You might want to open another browser session before you click so you can keep these instructions visible.Find the log page for the MJD you're interested in. For MJD 52006, the log page is in message 566
Print the log page by pulling down "File->Print" in Netscape.
Mark the log page.
On the paper copy of the log, highlight the r-band observations for our objects. Our objects are those that start with LUY:, TPC:, or MLT:. If there's no r-band observation, look for i, g, or z, in that order, and select one of those instead.Copy the raw images to your directory and uncompress them.
These are in the "images" directory of /home/au/reduced/MJD.
% cp /home/au/reduced/52006/images/*.* /home/ccw/iraf
% cd /home/ccw/iraf
% uncompress *.Z
Start ds9:
If you don't have ds9 running yet, do this:
% cd /home/ccw/iraf
% ds9 &
Change the orientation so North is up and East is to the left by clicking Zoom->Invert Y, then Zoom->270 deg.
Select a star to work on.
Look at the log sheet and select a star to work on. Each exposure has an exposure number (aka image number). The number of the first exposure in the sequence is called the "sequence ID." This number is used when referring to the entire set of observations and is usually the u-band exposure but sometimes it's g-band.Get coordinates and finding chart
In the paper log, find the name of the star. Get the coordinates, finding chart, and brightness (magnitude) of this star from your reference material. Write the coordinates in your notebook (these may not be accurate).Load an image in ds9
Find the name of the r-band image of your star and load it with a File->Open-> pull-down in ds9. For example, select 0011351.fit in the ds9 pull down menu.Adjust the display by clicking Scale, then Sqrt and then clicking Color and dragging the mouse across the image while holding the right button down.
Identify the star on the ds9 screen.
Using the finding chart, find the star on the ds9 screen. Note if the star is bright, faint, or average compared with others in the field. This takes a little practice and can be confusing since our stars often move. It's not unusual for more than one star to be moving in the field, usually in the same direction and with the same speed (a common proper motion pair).Extract the photometry from the reduced data tables.
We'll use the object TPC:Gl_412A as an example. The sequence id for this observation is 00113549.When you've located the star in the ds9 image, put your cursor over it and note its X and Y coordinates in your notebook.
In your terminal window, cd to the reduced data area and edit the "NNNNNNN.sor" file corresponding to your frame:
% cd /home/au/reduced/52006
% emacs 00113549.sor
Find the star in the list with the same (or nearly the same) X and Y coordinates as the star you've picked in the ds9 window.
Cut and paste the line for that star from the NNNNNNNN.sor file to your Notes file. At the end of the line, add the name of the star.
Annotate and print the raw data image
Set the "region color" to black by selecting Region->Color->Black at the top of the ds9 window. Then left mouse-click on the star to put a circle around it.Select Region->Shape->Text and click near the upper left of the image. A dialog box for the text entry will appear. Type NE Gl_412A and any other notes you think might be important (substitute the real star name for Gl_412A). The "NE" means the upper left is the North East corner of the image (make sure it is by checking the panner box at the top of the ds9 window). You'll probably need to move the text around a bit to get it in the right place.
The select File->Print to print the image. You might need to change the Print command to lpr (not lp). Use the Grayscale option at 53 dpi.
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