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Lo L1B prostar: add Lo spin-start offset from the spin table - #3545

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vineetbansal merged 3 commits into
IMAP-Science-Operations-Center:devfrom
vineetbansal:vb/issue3495
Oct 14, 2026
Merged

vineetbansal merged 3 commits into
IMAP-Science-Operations-Center:devfrom
vineetbansal:vb/issue3495

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@vineetbansal

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Closes #3495

  • get_lo_spin_start_phase_offset: circular mean of the spin-table phase at Lo's spin starts (start_subsec_spin read as 1/65536 s, pending issue Imap-Lo spin packet subsec units #3544 )
  • l1b_star adds it to the SPICE star-sensor azimuth; records both as star_sensor_azimuth_deg / spin_start_offset_deg
  • minor verbiage clarification in spin_angle CATDESC
  • added new tests

This branch builds on top of the work done in PR #3508, so once that's merged, I can rebase this on dev.

@vineetbansal
vineetbansal requested a review from tmplummer October 6, 2026 16:00
@vineetbansal vineetbansal changed the title Vb/issue3495 Lo L1B prostar: add Lo spin-start offset from the spin table Oct 6, 2026

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Yeah, this all looks great!

Comment thread imap_processing/lo/l1b/lo_l1b.py
@vineetbansal
vineetbansal merged commit 01aa6d5 into IMAP-Science-Operations-Center:dev Oct 14, 2026
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Update Lo L1B prostar algorithm to use spin table and spice

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