STScI Analysis Newsletter (STAN)
COS+STIS
April 2016 STAN
In this STAN, users preparing Cycle 24 proposals of background limited targets are advised to use a lower dark rate value to estimate exposure times for COS/FUV observations.
COS Team 01 Apr 2016
March 2016 STAN
In this STAN we provide updates on COS and STIS to users preparing a program for the Cycle 24 HST Phase 1 deadline.
COS+STIS Team 08 Mar 2016
January 2016 STAN
In this STAN we inform users of the release of CalCOS version 3.1, and suggest users retrieve any effected data again.
COS+STIS Team 28 Jan 2016
November 2015 STAN
The COS/STIS Team announces a new high contrast imaging program designed at pushing down to the photon limit at the inner working angle of STIS' BAR5 aperture location, as well as a call to the community to help support this activity.
COS/STIS Team 06 Nov 2015
October 2015 STAN
In this STAN we announce the release of a new version of the COS Data Handbook (v3.0).
COS/STIS Team 19 Oct 2015
September 2015 STAN -- STIS
In this Newsletter we announce new software to correct Charge Transfer Inefficiency effects in STIS CCD data.
COS/STIS Team 03 Sep 2015
July 2015 STAN
In this STAN we inform COS users of the release of two new reference files for flux and flat-field calibrations.
COS+STIS Team 10 Jul 2015
June 2015 STAN
In this STAN we inform Cycle 23 users who are preparing to submit a Phase 2 of a new mandatory keyword selection and that using TIME-TAG mode is recommended.
COS+STIS Team 29 Jun 2015
March 2015 STAN
In this Newsletter we provide updates on COS and STIS to users preparing a program for the HST Phase 1 deadline. Detailed is information about observing background limited targets with both COS and STIS, new flux calibration accuracy limitations on COS FUV observations of extended targets, Cycle 23 ETC updates, and effects of the OSM drift on the COS NUV wavelengths.
COS+STIS Team 12 Mar 2015
February 2015 STAN
In this Newsletter we provide information to COS users on the move of most FUV spectra to LP3 and the revised spectral extraction algorithm used at that position.
COS+STIS Team 16 Feb 2015
January 2015 STAN
In this Newsletter we provide information to COS users on an updated COS FUV time-dependent sensitivity (TDS) reference file.
COS+STIS Team 22 Jan 2015
December 2014 STAN
In this STAN we provide information to STIS users on Readnoise for GAIN=4.
COS+STIS Team 01 Dec 2014
August 2014 STAN
In this STAN we provide information to STIS users on Readnoise for GAIN=1.
COS+STIS Team 07 Aug 2014
June 2014 STAN
In this Newsletter we provide information on the updates done to the ETC, COS FUV lifetime positions, STIS TIME-TAG observations and COS FUV pixel-to-pixel flat field reference files.
COS+STIS Team 30 Jun 2014
March 2014 STAN
In this Newsletter we provide information to COS and STIS users on the use of the "Available-but-Unsupported" 31X0.05ND[A,B,C] apertures for STIS MAMA Spectroscopy, new Coronagraphic locations, ETC updates and COS FUV lifetime position.
COS+STIS Team 11 Mar 2014
December 2013 STAN
In this Newsletter we provide information to COS and STIS users on changes to the HST MAST Archive calibration pipeline for STIS, new COS Flux calibration, COS DISPTAB reference file and COS Flats.
S.Hernandez 04 Dec 2013
October 2013 STAN
In this Newsletter we provide some updates of interest to COS users on New COS/FUV TDS Correction and a NEW COS/FUV Flat reference file.
S. Hernandez 10 Oct 2013
June 2013 STAN
In this Newsletter we provide some updates of interest to COS users on COS G130M/1055 and 1096 data taken after July 23, 2012, Incorrect COS ACQ/Image coordinate keywords and Implementation of Gain-Sag table reference file.
S. Hernandez 25 Jun 2013
June 2013 STAN
In this Newsletter we provide some updates of interest to COS and STIS users who will be drafting and submitting Phase II
HST programs. Information here includes Updates to the COS ETC, changes to recommended buffer time for COS time-tag observations, COS G130M blue mode segment=B observations and Position dependance of linearity beyond saturation.
S.Hernandez 28 May 2013
February 2013 STAN
In this Newsletter we provide some updates of interest to COS users who will be drafting and submitting Phase 1 HST programs. We provide information on updates to the dark rates of the COS FUV segments and impact on ETC calculations for Phase I proposals.
A. Bostroem 20 Feb 2013
December 2012 STAN
In this Newsletter we provide some updates of interest to COS and STIS users who will be drafting and submitting Phase 1 HST programs. We provide information on COS new resolutions of 8,000-12,000, exposure time and S/N calculated by the ETC for G130M/1055 and 1096 settings and change to COS FUV pulse height filtering.
S.Hernandez 19 Feb 2013
June 2012 STAN
In this Newsletter we provide some updates of interest to COS and STIS users who will be drafting and submitting Phase 2 HST programs over the next several weeks. We provide information on using multiple FP-POS positions at the new COS lifetime location, updates on the ETC release (20.2), a summary of the new COS lifetime position characteristics and a reminder on CCD CTE changes.
COS+STIS Team 08 May 2012
February 2012 STAN
In this Newsletter we provide some updates of interest to COS and STIS users who will be drafting and submitting Phase 1 HST programs. We provide information on new ETC (20.1.1) changes), STIS CCD E1 aperture positions, Common mistakes that might affect your data, time variability of the STIS FUV MAMA dark rate, new CALCOS v2.15.4 and new photometric conversion tables and ripple tables for STIS Echelle modes.
COS+STIS Team 01 Feb 2012 (html)
June 2011 STAN
In this Newsletter we provide some updates of interest to COS and STIS users who will be drafting and submitting Phase 2 HST programs. Information includes using multiple FP-POS positions with COS, new options for COS FUV target acquisitions, operational voltage of Segment B of the COS FUV detector, COS G130M 1055 and 1096 corrected for OSM drift and zero-point offsets, STIS CCD E1 aperture position, update on ACQ/PEAK exposures with small STIS slits, COS and STIS target acquisitions on systems with large orbital motions and ETC IDs in APT.
A. Bostroem 20 Jun 2011
April 2011 STAN
In this newsletter we provide information on reference files
updates to the COS FUV TDS Table, the COS NUV Flat Field,
the COS Dispersion and Lamp Tables, and the delivery of a
COS FUV Flat Field. Additionally, changes to the PeakXD Target
Acquisition Strategy and the results of the alignment of two
STIS modes are discussed. Finally we present updates to the
calibration software.
COS+STIS Team 07 Apr 2011
January 2011 STAN
In this Newsletter we provide some updates of interest to
COS and STIS users who will be drafting and submitting Phase 1
HST programs over the next several weeks.
COS+STIS Team 24 Jan 2011
December 2010 STAN
In this Newsletter we provide information on the changes to the
COS pulse height filtering, the effects of gain sag on dispersed
light target acquisitions for COS, COS airglow Observations,
Reference file updates mailing lists for both COS and STIS,
and the delivery of a new FUV bad pixel table for STIS.
A. Bostroem 17 Dec 2010
November 2010 STAN
Correction to the STIS TDS and Information on the COS gain sag
COS+STIS Team 10 Nov 2010
September 2010 STAN
STIS TDS Updates, COS DQ Redefinitions, G140L/1280 Zeropoint warning, COS Calibration Updates, and Recent ISRs
COS + STIS Team 28 Sep 2010
June 2010 STAN
New COS TA Policy and APT 18.2 Updates
C. Proffitt 15 Jun 2010 (html)
STAN - May 2010
STIS versions of the Space Telescope Analysis Newsletters (STANs)
COS+STIS Team 17 May 2010 (html)
STAN - Feb 2010
G140L 1280 CENWAVE, COS between 900-1150 Angstroms, COS LSF, new PHATAB file, Updates to MIRRORB Throughput, NUV Dark Rate, Wavelength Calibration, documentation, and User Support. Cycle 18 IHB Errata.
COS+STIS Team 01 Feb 2010 (html)
STAN - Sept 2009
COS Data Now Available-
Early-release observations (ERO) from COS were presented to the public today. Fully-reduced ERO data are available from the COS Instrument Development Team, and other COS observations obtained during SMOV are available from MAST. Instructions for retrieving, calibrating, and analyzing these data are provided in the first COS STAN
COS Team 09 Sep 2009 (html)