We are pleased to present the first GHOST science observations that have been reduced with the GHOST pipeline. We are releasing the spectrum of XX Oph (Be + Red Supergiant; V= 8.59-10.2 mag) as an example to showcase the spectral range, spectral resolution, and overall quality of data that GHOST can provide in standard resolution mode (R=50000; with a total integration time of 240s, and a wavelength range of 347 to 1060nm).
Data Reduction Software
DRAGONS v3.1.0 is finally here!
This is a big update. At long last, GMOS longslit for science is available, including longslit nod-and-shuffle.
But there's a lot more still in that release.
STScI has recently announced that it will end support for the main Astroconda channel, used for installing Gemini data reduction packages, on 1 February 2023.
This patch release includes several small fixes and improvements, many related to the Quality Assessment Pipeline run internally at Gemini. Provenance for flux calibration is now included. The patch is recommended to all but not critical for most.
For a complete list of changes since v3.0.3 see:
A new virtual machine implementation for running IRAF on MacOS 10.14+ is now available. You can find updated instructions at:
Following some collaboration with the "IRAF Community" project earlier this year, we are pleased to make available PyRAF 2.2.1, the first version to pass all our testing on Python 3. This runs roughly as fast as the Python 2 version, thanks to improvements by Ole Streicher.
This version is already included on the new IRAF VM for Apple machines (see yesterday's announcement). On Linux, it can be installed by specifying "python=3.7" instead of "python=2.7" in the "conda create" command -- see:
A patch release of DRAGONS is available. This patch adds better handling of the GMOS-S data following the January failure of amplifier #5. For that data, the whole amplifier is automatically masked as bad pixels ensuring that those pixels are not used in calculations. The patch also includes bug fixes, small improvements, and fixes to the documentation.
For a complete list of changes since v3.0.1 see:
A new version of Gemini IRAF v1.15 with new support for Flamingos 2 MOS (Multi-Object Spectroscopy) data is available.
Along with Flamingos 2 MOS support, the new release includes the changes added in the v1.14 patch released two months ago, as well as several other bug fixes.
The package is distributed via conda. See the installation instructions page for details.
A patch release for Gemini IRAF v1.14 is available.
The replacement of two filters and the reshuffling of another in Flamingos 2 necessitated additions and modifications to lookup tables and modifications to the code. This patch release contains only the affected files. The patch is to be applied on-top of an already installed Gemini IRAF v1.14 package.
Installation instructions and content of the patch are available in gemini_v114_patch1.txt.
A patch release of DRAGONS is available. It includes bug fixes, small improvements, and fixes to the documentation.
For a complete list of changes since v3.0.0 see: