This releases the DR6 code to PyPI - it includes a restructuring of the repository to conform with modern build suggestions.
dr6
**March 21 2023**
Data Release 6 includes:
- Improvements to FUSE data
- Generalization of the coaddition algorithm
- Ability to create timeseries products for non-monitoring targets
dr5b
**November 15 2022**
Data Release 5b includes:
- New HST high-level science products (HLSPs) for 17 new low-mass targets _only_
dr5
**June 28 2022**
Data Release 5 includes:
- Complete refactoring of code API and package structure
- Generalization of most HLSP creation scripts
- Separation of static files and utility scripts into the [ullyses-utils repository](https://github.com/spacetelescope/ullyses-utils)
dr4
**Dec 14 2021**
Data Release 4 includes:
- Updates to allow for generalized calibration and HLSP creation of all monitoring stars
- Filename extension change from `_sed.fits` to `_preview-spec.fits`
dr3
**Aug 31 2021**
Data Release 3 includes:
- creation of new time-series spectral products, including products using LCOGT data
- creation of new imaging HLSPs
- the STIS calibration code was vastly improved, and YAML format changed
- error counts are converted to flux using a conversion factor of flux/net counts. `coadd.py` was updated such that if net counts are zero, interpolation is performed using neighboring conversion values
- fixed a bug where sometimes not all contributing spectra were used when coadding data
- special calibration is now performed for COS data with calibration issues (TW Hydra, SZ10)
dr2
**Mar 17 2021**
Data Release 2 includes:
- creation of new level 0 STIS products and accompanying YAML files
- FUSE VO files accepted as input spectra to `coadd.py`
- DQ=16 flags are ignored for STIS/MAMA data only instead of STIS/MAMA and STIS/CCD
- HLSP flux weighting method was improved to use the throughput (NET/FLUX) times exposure time as the weight
- Flux calibration affecting COS/G130M/1096/FPPOS1 data was fixed by the COS team, so the ULLYSES workaround was removed from `coadd.py`
- The abut code was improved to accept a wider variety of input observing modes
dr1
**Nov 5 2020**
First version of software to create ULLYSES High Level Science Products (HLSPs). Creates both coadded and abutted COS and STIS spectra for ULLYSES targets.