Wavelength is a required field. Please specify your scheduling constraints or 'No Constraints' on all Observation forms. 0 Assigned ID: 1122 ----- Attempting Submission 1 (Wed Aug 19 13:41:26 GMT 2020) ----- Joint Chandra/HST potentially improved version using ACQ/IMAGE -66380072 ----- Attempting Submission 1 (Mon Sep 14 21:47:20 GMT 2020) ----- HST Phase II Proposal 16421 successfully submitted. Receipt: # 16421-1 ----- Attempting Submission 2 (Tue Sep 15 14:27:01 GMT 2020) ----- Magnetic grand minima (MGM) are mysterious episodes when the Sun's magnetic dynamo cycle "takes a siesta" and goes into temporary quiescence. The phenomenon has never been observed in modern times; what was the Sun like then? Recently a star was observed to have a decaying cycle amplitude (in Ca HK), making it a strong candidate for an MGM episode. We propose to study the star with Chandra and HST, to explore magnetic heating throughout its outer atmosphere. Results will be compared with cycle minima and stars with "flat activity" (objects which may be in MGM or have "dead" dynamos) to explore similarities and differences, and reveal what may lie in store for our own Sun in the near future. We desire FUV low resolution (G140L) observation of a bright, low activity star. It has GAIA coordinates, so an ACQ/SEARCH is not needed. It is bright and so target ACQ is in imaging mode with BOA, but UV dim enough that time-tag mode is possible. After target ACQ, the remainder of the time is spent with the science observation for the star. n/a Stellar Physics and Stellar Types 6 false false false false false false false SUPPORTED STAR G V-IV NO This object was generated by the targetselector and retrieved from the SIMBAD database. Coords checked - they are ICRS from simbad (J2000) with proper motion applied to epoch 2015.5 J2000 J2000 COS/FUV Spectroscopic No No G140L 1600129923530 /private/var/folders/9h/yxrk0slj3ng6tp4vzkkp5zsc001278/T/OPVisit12528016361065317721.xml The scheduling data was generated by CASM 28.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 16421 :visit-id "01" :proposal-version -1 :trans-version "20200619" :date "14-Sep-2020 20:32:03.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 52416 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 16421 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 16421 :visit-id "01" :orbit-number 1 :pcs-time 393 :si-vis-utilization 2751 :al-overhead-at-end 0 :internal-dur-at-end 38 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3145 :pcs-gap 0 ) (Tic-Orbit :proposal-id 16421 :visit-id "01" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2753 :al-overhead-at-end 0 :internal-dur-at-end 331 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3145 :pcs-gap 0 ) true 2 0