Yeqzids

Title: Prediscovery Activity of New Interstellar Object 3I/ATLAS: A Dynamically-Old Comet?
Authors: Ye et al.
Table: ZTF photometry of 3I/ATLAS
================================================================================
Byte-by-byte Description of file: ztf_3i_table.txt
--------------------------------------------------------------------------------
   Bytes Format Units Label        Explanations
--------------------------------------------------------------------------------
   1-  15 F14.6  d     jd_mid         Midpoint observation time, JD
  16-  30 F14.6  d     jd_start       Observation start time, JD

Yeqzids

Convert sequence of JPEG images to MP4 video

Simple glob:

ffmpeg -r 24 -pattern_type glob -i '*.JPG' -s hd1080 -vcodec libx264 timelapse.mp4

Start from DSC_0079.JPG

ffmpeg -r 24 -f image2 -start_number 79 -i DSC_%04d.JPG -s hd1080 -vcodec libx264 timelapse2.mp4

Yeqzids

import argparse
import warnings
from astropy.time import Time
from astropy.utils.exceptions import AstropyWarning

parser = argparse.ArgumentParser(
    description='Convert JPL comet orbits to MPC comet orbits.')
parser.add_argument('jpl_file', help='JPL formatted file')
parser.add_argument('--halt-on-error', action='store_true',
                    help='stop on errors parsing the JPL file')

Yeqzids

#!/usr/bin/env python3

"""
	Convert comet designations from JPL fullname into MPC packed form.
	Does not deal with fragments and comets discovered before 1 AD.
	
	Usage: mpccmt_conv.py "C/2007 N3"
	
	Q.-Z. Ye
"""