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Hard code IMAP_SPACECRAFT ID and IMAP_SCLK ID #2534

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Merged
subagonsouth merged 1 commit into from
Dec 22, 2025
Merged

Hard code IMAP_SPACECRAFT ID and IMAP_SCLK ID #2534

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13 changes: 5 additions & 8 deletions imap_processing/spice/pointing_frame.py
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,8 @@
from imap_data_access import SPICEFilePath
from numpy.typing import NDArray

from imap_processing.spice.geometry import SpiceFrame, frame_transform
from imap_processing.spice import IMAP_SC_ID
from imap_processing.spice.geometry import SpiceBody, SpiceFrame, frame_transform
from imap_processing.spice.repoint import get_repoint_data
from imap_processing.spice.time import (
TICK_DURATION,
Expand Down Expand Up @@ -217,10 +218,6 @@ def calculate_pointing_attitude_segments(
f"Extracting mean spin axes for all Pointings that are"
f" fully covered by the CK files: {[p.name for p in ck_paths]}"
)
# Get IDs.
# https://spiceypy.readthedocs.io/en/main/documentation.html#spiceypy.spiceypy.gipool
id_imap_sclk = spiceypy.gipool("CK_-43000_SCLK", 0, 1)
id_imap_spacecraft = spiceypy.gipool("FRAME_IMAP_SPACECRAFT", 0, 1)

# This job relies on the batch starter to provide all the correct CK kernels
# to cover the time range of the new repoint table.
Expand All @@ -230,7 +227,7 @@ def calculate_pointing_attitude_segments(
et_end = -np.inf
for ck_path in ck_paths:
ck_cover = spiceypy.ckcov(
str(ck_path), int(id_imap_spacecraft), True, "INTERVAL", 0, "TDB"
str(ck_path), SpiceBody.IMAP_SPACECRAFT.value, True, "INTERVAL", 0, "TDB"
)
num_intervals = spiceypy.wncard(ck_cover)
individual_ck_start, _ = spiceypy.wnfetd(ck_cover, 0)
Expand Down Expand Up @@ -308,10 +305,10 @@ def calculate_pointing_attitude_segments(
# https://spiceypy.readthedocs.io/en/main/documentation.html#spiceypy.spiceypy.sce2c
# Convert start and end times to SCLK ticks.
pointing_segments[i_pointing]["start_sclk_ticks"] = spiceypy.sce2c(
int(id_imap_sclk), pointing_start_et
IMAP_SC_ID, pointing_start_et
)
pointing_segments[i_pointing]["end_sclk_ticks"] = spiceypy.sce2c(
int(id_imap_sclk), pointing_end_et
IMAP_SC_ID, pointing_end_et
)

return pointing_segments
Expand Down