Note: this HOP is done regardless of solar activity - it is *not* a quiet Sun HOP and it is acceptable to include active regions in the view fields.
Pointing: N-S meridian scan requires about 20 pointings to cover the solar diam.
The E-W latitude scans each require about 13 pointings. Note: as of November 2009 we now alternate the +/- 15 deg. latitude scans with a disk-equator scan. Therefor the E-W scan schedule is now as follows:
Jan 2016: -15 deg latitude and scan across disk center. Feb 2016: +15 deg latitude and scan across disk center. Mar 2016: -15 deg...etc.
Check the Google calendar to make sure the correct latitude is being scanned. Click on the green bar in the calendar and the "details" section should show which latitude is scheduled to be run. To be absolutely sure, check the timeline for the previous month.
Duration: Program 1: ~10 hours (about 30 minutes at each pointing for completion of the SP normal map plus overhead).
Program 2: ~6 hours (about 15 minutes at each position of the E-W scans). Note that the duration of these scan positions can be shortened to as little as 10 minutes if EIS and XRT do not take any data for the program.
N-S scans: avoid SAA periods for SP integrity E-W scans: avoid SAA periods at planner's convenience Use the program get_pnt_times.pro by Greg Slater to get SAA-free pointing times to give to CP at daily meeting.
Example calls for EW scans:
get_pnt_times,'9-feb-2016', lat=15, ts_win='10-feb-2016 18:30', /bfi get_pnt_times,'9-feb-2016', /horizontal, ts_win='9-feb-2016 16:00', /bfi
For NS scans, the following are equivalent:
get_pnt_times,'9-feb-2016', lon=0, ts_win='11-feb-2016 04:30', /bfi hop79ns,'9-feb-2016', ts_win='11-feb-2016 04:30'
(edited on 2016 Feb. 10) |
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