In this STAN we discuss the release of Cycle 31 documentation and news of interest to those who may submit Phase I proposals to use COS, including a discussion of G160M use at LP6 and an updated listing of dark rates. We also announce the delivery of a new gain sag table.
In this STAN we discuss the availability of stenv as a replacement for Astroconda. We also describe COS posters to be presented at the 241st AAS meeting and announce a new version of the COS Data Handbook.
In this STAN we announce the introduction of Lifetime Position 6 for G160M spectroscopy and the delivery of several new reference files.
In this STAN we discuss items of interest to those who are preparing Phase II proposals for Cycle 30. We also discuss the reappearance of a hot spot on the FUV detector and describe COS posters presented at the 240th AAS meeting.
In this STAN we discuss improved flux calibration of most FUV settings and improved wavelength calibration of Stripe B of the NUV/G230L/2950 setting. We also provide updates on the release of CalCOS 3.4 and how to install or upgrade to it. Finally, we invite COS users to contribute slides for the STScI booth display at the Summer 2022 AAS meeting.
In this STAN we provide updates about COS to those who are preparing Phase I proposals for HST Cycle 30.
In this STAN we announce the release of documentation relevant to the preparation of Cycle 30 COS proposals. We also announce a new COS data processing walkthrough notebook and the incorporation of updated dark rates into the COS exposure time calculators.
In this STAN we announce the delivery of an updated SPOTTAB file to correct for a recently discovered transient hotspot in the lower LP4 background region of the FUVB detector segment.
In this STAN we announce FUV lifetime position changes, the release of CalCOS v3.3.11, the delivery of new reference files, a new version of the COS Data Handbook, and the end of HSTCAL support for RHEL 6.
In this STAN we announce new COS walkthrough notebooks and provide information for preparing Cycle 29 Phase II proposals.
In this STAN we introduce a webpage with instructions for responding to reports of observing problems, discuss the possibility that NUV fluxes of extended objects may be underestimated, and announce the delivery of a new gain sag table that affects data obtained starting in May 2020.
In this STAN we provide updates about COS to those who are preparing Phase I proposals for HST Cycle 29.
In this STAN we announce COS posters at the January 2021 meeting of the American Astronomical Society and the incorporation of updated dark rates into the COS exposure time calculators.
In this STAN we announce an update to the calculation of uncertainties in CalCOS and the delivery of new time-dependent sensitivity and photometric throughput tables for FUV observations.
In this STAN we announce the deliveries of new reference files for the calibration of COS spectra obtained with the FUV blue modes G130M/1055 and G130M/1096 and with the NUV gratings G185M, G225M, and G230L.