Phase 2: Programming Observations

This page is for astronomers with Phase 1 proposals that have been accepted, and who have been awarded observing time on the LT. Users will be informed by email when their proposal is ready to be populated with observations.

Phase 2 User Interface

Successful applicants with time allocated on the LT must submit their observations using the Phase 2 User Interface (phase2UI), an online Java tool. Note that observations will NOT be prepared by LT staff, though users are welcome to contact phase 2 support should they have questions about the process or comments.

There are two supported mechanisms to launch the phase2UI. Each performs the same function of keeping your local installation synchronised with the latest version running on the telescope. This ensures you always have an up-to-date list of available instruments, filters etc.

• Java Webstart: The older mechanism we have used for many years on LT. It is no longer widely supported by all Java versions due to licensing restrictions. It may become deprecated in the future though currently still works well, is robust and reliable in those platforms that still support it. Requires a Java runtime environment (JRE) to be installed on your machine. If your local site IT policies do not permit you to install a JRE, you will not be able to use this deployment.
• JDeploy: Does not require you to install a general purpose, system-wide Java runtime environment on your computer. This bundles the executable Java into the phase2UI so it looks and behaves more like any other standalone, executable application you might install. Being self-contained, with fewer external dependencies, this is likely to be a better choice on shared terminals or machines managed by someone else where you do not have system administrator privileges. Currently it is not reliable on linux machines. There is a Linux download available that you can try and we would be grateful to hear from anyone who tests it, but most Linux users should generally stick to using the Webstart version for now.
• VM Appliance: Deprecated and no longer supported. Please contact us if you think you need it and we can discuss finding a better solution for you.

Which Version Should I Download?

Whichever method you choose to launch the application, once it is running they are all exactly identical. To help new users become accustomed with the system, a "Getting Started" tutorial is provided. A Comprehensive Guide is also available. Returning users may simply wish to refer to the instrument-specific pages provided below. As ever, if you have any queries not covered in the tutorial or instructions, please contact LT Phase 2 Support.

JDeploy Getting Started (tutorial) Introduction and Instructions

Webstart Getting Started (tutorial) Introduction and Instructions

System requirements » Java 8 JRE, available from www.java.com/getjava/ » Note that though Java8 dates from 2014 and there are much higher versions available, do not use them. Java8 is a stable, long-term-support version maintained with all security patches and is the default distribution from the link above. » OpenJDK 8 or Corretto 8 should also work. » any of Firefox, Safari, Opera, Chrome or Internet Explorer

The phase2UI has been tested on a wide range of common OS and browser combinations, but if you find any problems please contact LT Phase 2 Support.

User Interface Instructions and Tutorials

phase2 UI "Getting started" Tutorial:   creating a simple multicolour   photometry group phase2 UI Instructions phase2 UI Sequence Builder phase2 UI Advanced Tutorial:   Sequence Builder phase2 UI Ephemeris Table Input phase2 UI Group Cloning Tutorial

Using the User Interface with specific instruments and mechanisms: IO:O IO:I SPRAT FRODOSpec RISE MOPTOP Cassegrain Rotator The sky brightness model in detail [link]