We are pleased to announce that a video tutorial for setting up GHOST Phase II is now available online. Check it out here: https://noirlab.edu/science/videos/ghost
We hope you find it helpful!

MAROON-X experienced two shifts in the echelle image in 24A: the first due to an earthquake on Feb 9, 2024, and the second due to a loss of observatory power on June 13, 2024. This has impacted two key steps in the reduction process. As a result, the radial velocities from 24A based on the existing reduction are currently uncertain to ~20 m/s. All data from 24B so far seem to be within specifications. The instrument team in Chicago has been adjusting the reduction procedure with the aim of resolving this issue and restoring the nominal data quality.

The issue affecting every 8th column on the top right quadrant of the detector reported in this announcement has been further investigated.

The two ADC boards that were not performing correctly have been replaced and the issue has now been fixed. The figure below shows a horizontal cut along the top right quadrant of a LR-IFU flat and demonstrates that the faulty columns are now recovered.

In early April 2024, the GNIRS camera turret experienced a mechanical issue​, ​likely due to the dragging of a bearing that helps drive the movement of the turret. It has been assessed that GNIRS could no longer reliably shift between its long and short cameras​. ​A soft lock on the camera turret ​has been put in place, which fix​es the​ location of the turret to the short blue camera.

GNIRS recently began showing an issue that affects every 8th column on the top right quadrant of the detector, an issue that impacts all GNIRS modes. This issue first appeared on the 25th of October, 2022. Investigations to mitigate or fix the issue are currently ongoing. For the time being, PIs are advised to consider all pixels associated with these columns as bad pixels and not to use them for science and/or calibrations.