We provide a number of public computers and peripherals for general use by our visiting astronomers. We kindly ask our users to follow the conditions of use for ING computers and networks. The information given below does not include the computers or the user accounts of the telescopes' observing systems. A computer user account is allocated for your observing run by default, details of which are available from your Support Astronomer (SA). We can provide you with up to 3 additional guest accounts if necessary (see the current account assignments. For more guest accounts that you might require, or if you are visiting the ING and you need an account, please complete the Computing Facilities Questionnaire for visiting astronomers.

Certain access restrictions are applicable when using these guest accounts. In accordance with the ING Computer Security Policy, guest accounts are provided to be used within the ING network domain. That is to say, access to ING resources via these accounts is only permitted if the user is on ING premises.

You can use the following public desktop computers using the account provided upon arrival:

Computer	Location	Operating system
INTDRPC1	INT control room	Linux Fedora 14
INTDRPC2	INT control room	Linux Fedora 14
WHTDRPC1	WHT control room	Linux Fedora 14
WHTDRPC2	WHT control room	Linux Fedora 14
WHTDRPC4	WHT terminal room	Linux Fedora 14
WHTDRPC5	WHT terminal room	Linux Fedora 14
WHTDRPC6	WHT astronomy office	Linux Fedora 14
WHTDRPC7	WHT astronomy office	Linux Fedora 14
ASTROMAC1	WHT terminal room	Mac OS X Lion 10.7/Windows 7 professional
ASTROWIN1[1]	Remote virtual machine	Windows Server 2008 R2
[1]: On linux, type: "rdesktop -u whtguest -d ING -g 90% ASTROWIN1" (replace whtguest by the username your are using). You can also type: "tsclient", and select terminal or add connection to ASTROWIN1. On Mac, you can use Microsoft's remote desktop connection on domain ING, but please note that it is not intended for use with Mac OS X v10.7 (Lion).

The available software can be checked at this list of Linux installed software. The available software on Mac and Windows computers is limited to small number of basic applications. Please contact Astronomy Computing at the contact details given below for more information.

ING's wireless external network ingext is password-protected at the WHT and INT control rooms, please contact your SA or Observing Support Assistant (OSA) to get the password, or check your visitor's pack upon your arrival. For accessing ingext elsewhere (WHT's building, Residencia's lounge or ING's sea-level office) registering the MAC address of your wifi card on your device is necessary, please submit a Computing Facilities Questionnaire for visiting astronomers. ingext requires Dynamic Host Configuration Protocol (DHCP), no static IP addresses are available.

Please be aware that the use of the email outgoing ports 25 (SMTP) and 465 (SMTPS) within the ING network is not permitted, unless used for connecting with an ING email server. As a consequence you will be able to read, but not to send out email. Alternative ways for emailing within the ING network without using an ING email server, like webemail, or SSH and VPN connections, are not affected by this network security restriction.

You can apply for a cable network access, based on DHCP. Please provide your ethernet MAC address using the Computing Facilities Questionnaire for visiting astronomers. There is also a list of fixed IP addresses at the disposal of visitors if the ethernet MAC address wasn't registered previously.

IAC operates a wireless network at the Residencia that can be accessed from the bedrooms. Details on how to use it can be obtained at the reception of the Residencia. ING also provides a network hub in the computer room of the Residencia. For plugging your computer there you need DHCP and registering your ethernet's MAC address using the Computing Facilities Questionnaire for visiting astronomers.

Users of Macintosh are requested to contact the ING Computing Group using the Computing Facilities Questionnaire for visiting astronomers well in advance of their visit, if they suspect that they will require any specific support for their computers.

If your institution is connected to the network, you can log on the ING's eduroam wifi network using your network's username and password at your institution (enter username@domain as username). At the ING, security is set to WPA2-Enterprise and encryption to AES CCMP. More information can be found at EDUROAM at ING.

The ING provides visiting astronomers with DVDs for data recording, and DDS3 tapes if using the INT/WFC, whilst they are observing. Visitors can also use their external devices to download the data or data transfer via FTP. Please follow these instructions for transferring and recording data.

It is an ING policy that all astronomical images are archived and eventually sent to the image archive operated by the CASU Astronomical Data Centre in Cambridge (see the ING data ownership policy for more information. To ensure that all images are archived, please do not delete any files on the observing directories.

If you need to recover any data or an observational log of your run during the propietary period, your request will need to be made via the ING Astronomy Group. Please contact the Support Astronomer of your observing run or the Head of Astronomy.

The following directories can be used for temporary file storage, for instance, for doing data reduction and analysis:

Directory	Assigned to	Comments
/reduction/local/	WHT and INT observers	Local scratch areas (not exported to the network) available on computers named: *DRPC* (eg. WHTDRPC1 or INTDRPC1) and ASTROMAC1.
/scratch/inta/ intb/	INT observer
/scratch/whta/ whtb/ whtc/	WHT observer

Please be aware that these areas are not backed up. Moreover, files could be removed without warning, ie. if free disk capacity drops below 10%.

To work with observational data, first copy the files from the /obsdata directories to a scratch area (/reduction/local or /scratch) on a *DRPC* computer. Then you can log on using one of your assigned guest accounts.

The following printers are available (to obtain the IP address of a printer, type the command in the column 'To obtain IP' below at the prompt of a computer within the ING network):

Printer	Location	Description	To obtain IP
wht_laser	WHT terminal room	B/W duplex laser printer	nslookup hpwht
wht_color	WHT terminal room	Colour duplex laser printer	nslookup whtcolor
int_laser	INT control room	B/W duplex laser printer	nslookup hpint
hp-5d	5th floor, sea-level office	B/W duplex laser printer	nslookup hp-5d
hp-5c	5th floor, sea-level office	Colour duplex laser printer	nslookup hp-5c
astrofax	5th floor, sea-level office	Colour duplex laser fax, printer, copier and scanner	nslookup astrofax

To print on the above printers from the public computers, please write the following at the command line:

lp -d<printer> <file>

lp -d<printer> -o sides=two-sided-long-edge <file>

Where printer is the printer's name as provided in the first column of the table above. If you need to print from your laptop using ingext network, please follow the instructions on how to print to ING printers as a guest.