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This STAN provides information about updates to CALSPEC and the schedule for implementing changes to flux calibration for HST instruments, a discussion about how to access the correct coordinates for targets with proper motions in APT, and an update on the STIS python defringing tools, which are now available in the stistools package.
In this STAN we announce a CALSPEC update, including a schedule for the implementation of the resulting flux calibration changes for HST instruments. We also provide advice on verifying coordinates in APT for targets that have proper motions.
Ahead of the upcoming Cycle 28 Phase II deadline, this STAN provides information regarding STIS best practices for submitting Phase II's. In addition, information regarding updates to the STIS Exposure Time Calculator for Cycle 28 Phase II, new posters from the recent American Astronomical Society meeting, and information regarding the recent redelivery of several super-dark and super-bias reference files is available in this STAN.
Contents: : WFC3 in Action! Visit us (online) at the 236th AAS Meeting Cycle 28 Tips and Advice New Absolute Astrometry in MAST Data Products WFC3/IR Sensitivity Over Time EPER Update WFC3 Quicklook Anomalies Database The Dispersed infrared background in WFC3 G102 and G141 observations HST 30th Anniversary Image Information New Documentation
In this newsletter we announce a new CalCOS release, provide updated dark rates, and announce the availability of line spread functions and cross-dispersion spread functions for cenwaves introduced in Cycle 26.
In this newsletter we provide updates about COS to those who are preparing Phase I proposals for HST Cycle 28.
This STAN provides information regarding the updates made to the STIS Exposure Time Calculator (ETC) for Cycle 28 Phase I, news regarding the sensitivity recalibration of the E140M grating and the delivery of new PHOTTAB and RIPTAB files in support of this recalibration, updates to the NUV-MAMA dark rate, and the status of a new suite of Python STIS Defringing Tools.
In this STAN we provide an update on new reference file deliveries.
Contents: WFC3 in Action! Visit us at the 235th AAS Meeting WFC3 Instrument Handbook for Cycle 28 New Astrometric Solutions in WFC3 Images WFC3 IR PSF Database Available on MAST Portal Comparison of WFC3/UVIS Geometric Distortions Solutions to Gaia Data Release 2 Vacancy Announcement New Documentation
In this STAN we provide information on the NUV time-dependent sensitivity.
This STAN describes updates to the absolute flux calibration of the ACS SBC detector and a bug fix to IVM weighting in AstroDrizzle.
In this STAN we provide information on Cycle 27 ETC updates and preparing Cycle 27 Phase II submissions.
This STAN provides information about best practices when submitting Phase II proposals, notification of a recently-published paper in JATIS regarding coronagraphy with STIS, details about the STIS data handbook update, and information about a new job opportunity at STScI.
Contents: New WFC3 Website Cycle 27 Phase II Tips and Advice New Time-dependent WFC3/IR Bad Pixel Tables and Superdarks Improved WFC3/IR Drizzled Products Calibration of the WFC3-IR Count-rate Non- linearity, Sub-percent Accuracy for a Factor of a Million in Flux Vacancy Announcement: Senior Research and Instrument Analyst New Documentation
In this STAN we provide an update on new reference file deliveries and general updates of interest to COS users.