Monday, April 17, 2017

Today's EVE Cruciform and the Next Few Months

Today SDO is performing the EVE Cruciform. Images may be missing or blurry due to the motion of SDO. The 2017-094 SDO FDS Quarterly (LongSet) Predicts have been delivered. They extend through 2017 DOY 338. The highlights include:
  • 2017/109 (04/19) EVE FOV/ HMI/AIA Flatfield Calibration
  • 2017/116 @ 1825z (04/26 @ 1425L) - Momentum Management Maneuver (Delta-H) MM #29
  • 2017/145 @ 1824 to 1917z (05/25 @ 1424 to 1517L) - Lunar Transit
  • 2017/207 @ TBD (07/26 @ TBD) - Momentum Management Maneuver (Delta-H)MM #30 (tentative)
  • 2017/228 @ 0709z (08/16 @ 0309L) - Eclipse Season Starts
  • 2017/233 @ 1927 to 1955z (08/21 @ 1527 to 1555L) - Lunar Transit (LunTran_2017233_2dc_14pshdw)
  • 2017/242 @ TBD (08/30 @ TBD) - Stationkeeping Maneuver (Delta-V) SK #15 (tentative)
  • 2017/252 @ 0650z (09/09 @ 0250L) - Eclipse Season Ends
  • 2017/292 @ 1941 to 2025z (10/19 @ 1541 to 1625L) - Lunar Transit (LunTran_2017292_2dc_26pshdw)
With these new predicts we now think SDO will see a brief lunar transit on August 21, 2017, 1927-1955 UTC (3:27 pm ET to 3:55 pm ET). Although the Total Solar Eclipse passes over the continental US, SDO sees a brief transit 45 minutes after the Moon's shadow has moved off the coast into the Atlantic Ocean. More about this when the eclipse draws closer.