Magellan LDSS3

Overview

This file summarizes several instrument specific items for the Magellan/LDSS3 spectrograph.

The pipeline now only supports the VPH-ALL grism, and is only tested for cases when the science object is on chip 1 (c1) and 1x1 binning.

Prepare the .pypeit file

To limit spurious object detections, we recommend restricting the object finding in the .pypeit file, e.g.:

[reduce]
    [[findobj]]
        find_trim_edge = 100, 100  # ignore 100 pix at each slit edge

Sensitivity function

The default sensitivity-function algorithm is IR, which has been tested on LDSS3 data and is robust. UVIS is also an option: it is faster and gives nearly identical results in our tests, but is less thoroughly validated for this instrument setup.