Download Nikon raw images from https://eol.jsc.nasa.gov/

iss-neffer.py

# python neffer.py 55 111879
#          mission ^^ ^^^^^^ frame
# will write to iss055e111878.nef.

# This code is public domain; please improve & adapt it.

import requests
from sys import argv, exit
from random import uniform
from time import sleep

mission = f"{int(argv[1]):03}"
frame = f"{int(argv[2]):06}" # what happens at 7 digits?

ask_url = f"https://eol.jsc.nasa.gov/SearchPhotos/RequestOriginalImage.pl?mission=ISS{mission}&roll=E&frame={frame}&file=iss{mission}e{frame}.NEF"
print(f"Knocking on: {ask_url}")

dst_path = f"iss{mission}e{frame}.nef"

req = requests.get(ask_url)
rsc = req.status_code

if rsc != 200:
    exit(f"Gave up on {mission} {frame}: HTTP {rsc}.")

waited = 0

def fetch_nef(mission, frame, waited):
    nef_url = f"https://eol.jsc.nasa.gov/OriginalImagery/iss{mission}e{frame}.NEF"
    print(f"Trying to download {nef_url}")
    nef_req = requests.get(nef_url)
    if nef_req.status_code != 200:
        return False
    with open(dst_path, "wb") as dst:
        dst.write(nef_req.content)
    print(f"Wrote to {dst_path} after {waited} s.")
    return True

another = ''

for try_ in range(5):
    # wait 1 minute, then 2 (total of 3), then 3 (total of 6) ...
    delay = 60*(try_+1) # uniform(30, (10 * 60))
    print(f"Waiting{another} {delay} s.")
    another = ' another'
    sleep(delay)
    waited += delay
    fetched = fetch_nef(mission, frame, waited)
    if fetched:
        exit()

print(f"Failed to fetch {mission}e{frame} over {try_+1} tries in {waited} s.")