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Asteroid 2018 TF3 offset from predicted position #17

@altuson

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@altuson
from tess_asteroids import MovingTPF

# Use small time_step because asteroid is very fast moving.
target, _ = MovingTPF.from_name("2018 TF3", sector=4, camera=3, ccd=2, time_step=0.001)

# Use big shape to capture smear of asteroid and use low threshold because no pixels were above default value. 
target.make_tpf(shape=(100,100), threshold=0.001)

# Save animated TPF
target.animate_tpf(save=True)

tess-2018TF3-s0004-3-2-shape100x100-moving_tp

The TPF for this asteroid correctly has predicted position and PRF aperture centered in TPF. However, the asteroid is offset and this offset changes during the observation. The change is perpendicular to the direction of motion and is not caused by the difference in UTC and BJD. Need to investigate why this is happening.

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