ESO ETCs Preview

Important note:

The following applications are not supported, not garanteed and are only offered as a preview and for external testing:

ELT Exposure Time Calculator

This experimental ELT ETC is a development and planning aid and intended for test purposes only.

Calibrator Selector

The web based calibrator selector, otherwise known as CALVIN, allows the user to determine which are the most suitable calibrator stars from a database of approximately 140 calibrator stars.

Features of the web-based calibrator selector:-

Finds the most suitable calibrators depending on the target and time of observation and position of observatory.
Works for all observatories. Paranal is the default position but any position can be given by the user.
Information provided for each valid calibrator: TargetName, R.A., Dec, AngularDist, AngularDiameter, Magnitude.
Information calculated for each valid calibrator: Visibility, Corr.Mag., VisibileTimeWindow, Altitude, Shadowing.
Calculated information is provided in both graphical (gif) and ascii format.
Search criteria is automatically generated.
Search criteria valid for AngularDist, AngularDiameter, K-Magnitude, AverageNormalizedVisibility
The order of the results can be sorted using any of the valid search criteria.

VLT Interferometer Visiblity Calculator

This software has been prepared in collaboration between ESO and the Jean-Marie Mariotti Centre providing the ASPRO Software

Special note: This VLTI Visibility Calculator is a development and planning aid and intended for test purposes only. Users preparing observation proposals must use the Call for Proposal version of this tool.

This is a preparation tool for use with the VLT Interferometer. The uv coverage and visibilities of targets can be estimated for different VLTI baselines.

Features of the web-based Visibility Calculator (Expert Version)

Target coordinates look-up using target name (Simbad)
Upload of user-defined source images (FITS)
Multi-wavelength and frequency synthesis
Shadowing information (caused by buildings at Paranal)
The altitude of the target and sun are plotted against time
UV plane overlaid with UV tracks is displayed
The visibilities along the UV tracks are given
Loss in correlated magnitude is shown as a function of time
Delay line information is provided
Results can be viewed as normals graphs, ASCII or special java applet viewers