Science Operations

MODS OT Examples

Set your observation up with either the MODS1 templates (expanding the MODS1 Folder) OR the MODS2 templates (expanding the MODS2 Folder) and then generate one-sided scripts. MODS Binocular observations are handled on the instrument command side. Take this into consideration as you build your observations. Binocular observing will use the wrappers, acqBinoMODS and execBinoMODS which take one (for identical twinning) or two scripts (for fraternal twinning) as arguments.

There is no need to build observations or generate scripts for each side if observing binocular twin. For MODS twin mode one-sided scripts will be cloned by the execution tool at the telescope.

MODS Direct Imaging Example
MODS Long-Slit Example
MODS Multi-Slit Example
MODS Standards Example

The above linked examples will demonstrate how to build MODS Observations using the MODS Library Templates. As with any example, start by opening a New Program. The new Science Program will open to the Main Program Node or Tab. It is here that you can fill out necessary information, such as your name, e-mail, and LBTO partner.

Pro Tip 1: Some of this information may be critical to identifying your data for later retrieval from the archive, so do not overlook this section.

Once the Science Program/PI information has been filled out, import the MODS Science Library into the OT so that you can copy and paste already built templates into your Science Program.

To import the library, ensure you have a copy of the the MODS Science Library saved to your local directory. Use the Main Menu to navigate to File –> Import xml. From there a dialog box will appear.

The MODS Library will open in a new OT window. Expand either the MODS1 or MODS2 Folder depending on which ever you are using, and adjust the window so that the template names are visible.

There are three main modes of Science observing:

  1. Direct Imaging
  2. Long-Slit Spectroscopy
  3. Multi-Object Spectroscopy (MOS)

These observations are built differently, although Long-Slit and Multi-Slit are very similar. Spectroscopic scripts are comprised of both and acquisition and a Science Observation. The acquisition portion of an imaging observation is part of the Science Observation. Often observers will desire Standards for data calibration. Select the Template(s) that most closely resembles the science observation you wish to generate. How to alter the templates for each mode is described in the following pages.

Note that all offsets are by default done asynchronously, meaning that each side will offset independently (by moving the optics). But the mirror limits of travel prohibit asynchronous offsets greater than the co-pointing radius, which is 40″. Offsets larger that 40″ can be made ‘synchronously’. (but moving the mount). To indicate that an offset should be synchronous, MODS scripts use the “syncoffset” command. Blind offsets generated using the Library Template will insert a “syncoffset” command making the offset synchronous and allowing users to perform larger offsets without fear of breaking the co-pointing limit.