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  1. Why doesn't command xyz work on this computer ?
  2. How do I burn a CD-ROM ?
  3. Some files I sent to the printer never came out. Why ?
  4. This 8mm data tape always ejects from the tapedrive before I can do anything to it. Why ?
  5. How do I convert Figaro .dst files to FITS files ?
  6. Help! I don't know any VMS!
  7. How do I send a user list to the 60" telescope computer?


Why doesn't command xyz work on this computer ?
Users often edit the .cshrc file and may remove important lines. To fix this, execute:

 % cp ~/.cshrc-general ~/.cshrc
 % source ~/.cshrc
Note that this affects only the window in which you execute the above commands. To make it universal, log out and log back in.

How do I burn a CD-ROM ?
See the web page at
http://www.astro.caltech.edu/palomar/computers/cdrecord.html

Some files I sent to the printer never came out. Why ?
At the 200", if you send too many jobs to the printer, the queue overflows, and some jobs will get lost. Note that if you send a smaller job after a bigger one, the smaller one may come out first.

This 8mm data tape always ejects from the tapedrive before I can do anything to it. Why ?
The Exabyte® tapedrives we have write at high density (5Gb on a 112m tape, or 10Gb with compression). If you are trying to write to a tape previously used in low density mode (2.5Gb) on an older tapedrive, these new drives will not accept them. If you turn the write protect tab on, you will be able to read the tape, however. To make such a tape writable, you will need to find an intermediate generation tapedrive that will overwrite your tape.

How do I convert Figaro .dst files to FITS files ?
Use the command fig2fits *.dst. If this bombs, see
question 1.

Help! I don't know any VMS!
Ah, young Jedi. You have much to learn about the dark side...

Rule #1: Never use Ctrl-C to kill a process! It will confuse the CCD controller. Use Ctrl-Y instead.

To show the current directory:

$ SHOW DEF
To move up a directory:
$ SET DEF [-]
To move down a directory (say, to n2):
$ SET DEF [.N2]
To create a subdirectory:
$ CREATE/DIR [.N2]
To delete a file called text.com:
$ DEL/NOCO TEXT.COM;
To copy a file called text.com from the sys:[ccd] directory to the local directory:
$ COPY SYS:[CCD]TEXT.COM *.*
To see the contents of a text file:
$ TYPE/PA TEXT.COM
To execute a command file text.com:
$ @TEXT
To edit a file text.com:
$ ED TEXT.COM
Make the changes you want, then hit Ctrl-Z, and type exit at the prompt.

How do I send a user list to the 60" telescope computer?
Your user lists can now be located on any machine in the world. To use them during the night, you will have to transfer the ones you need to the telescope control computer. To do this, you will have to physically place the TCS computer onto the network. Then, on the TCS computer, type:

* readuser
  User catalog to install [1]: 1
  Name of new owner of User catalog 4 [rrg]: rrg
  Input is accepted from:
      1 - Local file
      2 - Remote computer file
  Choose one [2]: 2
  Host name or internet address [leda]: leda (or your machine's name)
  Account name [user]: user
  Password (not echoed): enter password
  Pathname of file to get []: /home/user/rrg/abell_ra16_20.lis
Put the catalogs into user catalogs 1,2,3 as needed.
Created by,:
Roy Gal
Updated 24 Feb 2001

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