https://stereo-ssc.nascom.nasa.gov/pub/beacon/ahead/secchi/img/hi_1/20081224/?C=N;O=A
Index of /pub/beacon/ahead/secchi/img/hi_1/20081224
index ofpubbeaconaheadsecchi
https://stereo-ssc.nascom.nasa.gov/pub/beacon/ahead/secchi/img/hi_1/20081224/?C=M;O=A
Index of /pub/beacon/ahead/secchi/img/hi_1/20081224
index ofpubbeaconaheadsecchi