2p2 Team Web Tools

Web Tools

Below are links to web-based tools developed and supported by the 2p2 Team at the La Silla Observatory.

Tools for the MPG/ESO 2.2-m

WFI Filter Tx Plotter
Author: James Brewer
This tool will produce a plot of up to 4 of the WFI filter transmission curves, and allow the user to choose the limits for the plot. A PERL script calls 2 smongo macros (1 and 2) that generate the plot. The PERL script assigns unique names, and generates the return page.

2p2 Environmental Monitor
Author: James Brewer
This page shows the readings from the temperature and humidity sensors installed at the 2p2 telescope. The page updates itself every 5 minutes. For further details, see the Help page.

Tools for the DK 1.54-m Telescope

Exposure Time Estimator
Author: James Brewer
This tool allows observers to estimate the exposure time required to obtain a certain signal-to-noise ratio for an object of a given brightness. The HTML form calls a PERL script which processes the arguments and in turn calls a C program to generate a graph and another to generate a table.

DK Tracking-Rate Calculator
Author: James Brewer
This tool will make the misalignment and scale corrections to cross motion rates such that they can be used for differential autoguiding at the Danish Telescope. The calculator uses a PERL script to make the (simple) transformations and return the corrected values.

DK Parallactic Angle Calculator
Author: James Brewer
This tool uses a PERL script to calculate the parallatic angle mid-observation, and return this angle, along with the angle that the DFOSC should be set to, to the observer. In addition, a plot of parallatic angle vs. hour angle is generated by a sm script.

DK Set-Up Form
Author: James Brewer
This tool allows an observer to generate a set-up form, and then to mail it in advance of their arrival. A HTML form is used, and this passes arguments to a PERL script which substitutes the arguments into a LaTeX template which is processed to produce a postscript file. Note that this tool is still under development.

DK Environmental Monitor
Author: James Brewer
This page shows the readings from the temperature and humidity sensors installed at the Danish telescope. The page updates itself every 5 minutes. For further details, see the Help page.

Tools for the ESO 1.52-m Telescope

Angle Calculator
Author: Alessandro Pizzella
Choose a grating and a wavelength range and find the grating angle, dispersion, slit width and other useful quantities you may need.

Dispersion
Author: Alessandro Pizzella
Choose a grating and a grating angle and find the central wavelength, dispersion, slit width and other useful quantities you may need.

Efficiency
Author: Alessandro Pizzella
This program can be useful to find the gratings that you need for your scientific program.

Exposure Meter
Author: Alessandro Pizzella
S/N versus exposure time plots and table for the offered gratings.