All the computers used at CTIO are linked together. If you are logged onto one machine you can easily login to any other. Telnet connects all the computers used at CTIO. If you want to send mail via SPAN abroad then you must login to the "VAX1" machine located downtown. Using this to connect to another machine is easy, ie:

      mach% telnet ctiov1

You must then login in the usual manner by typing in your username and password when prompted. There are two VAXs which may be accessed this way, ctiov1 and ctiov2. This will also work if you are logged in and using IRAF. So if you are logged onto a VAX and would like to connect to a SUN, just use telnet. You must then be sure to turn off the caps lock when returning to a SUN, or the UNIX systems will be thrown into a strange mode. This can be gotten out of by logging out and then logging back in using lower case. All the SUNs are linked via rlogin. NOTE THAT rlogin IS BETTER THAN telnet IF YOU ARE ONLY USING A REMOTE LOGIN TO ANOTHER SUN. If you are on one SUN and would like to login to get onto "SUN1" ie, ctios1 in La Serena then all you need do is type:

      mach% rlogin ctios1

This will log you onto the "SUN1" machine in La Serena from the machine you are currently logged onto. The possible choises are:

        \fBMountain\fR                \fBLa Serena\fR
       	 ctio4m                  ctios1
       	 ctio1m                  ctios2
       	 ctio60                  ctios3
         ctio36

Rlogin is usable in IRAF, however if you are logged onto the VAX you can get to the other machines using telnet only. If you have any problems, contact Mario Hamuy, Lisa Wells, or Jim Hughes.