Unable to download thumbnails

khyde · by **khyde** » Thu Apr 19, 2018 2:27 pm America/New_York

Hello,

I often download the thumbnail images when I run into processing errors, but recently I have not be able to download them using wget.

When I try:
wget -c -N https://oceancolor.gsfc.nasa.gov/cgi/browse.pl/A2005152063500.L2_LAC_OC.nc_CHLOR_A_BRS.png?sub=l12image&file=A2005152063500.L2_LAC_OC.nc_CHLOR_A_BRS
I get:
Resolving oceancolor.gsfc.nasa.gov (oceancolor.gsfc.nasa.gov)... 2001:4d0:2418:128::44, xx.xxx.xx.xx
Connecting to oceancolor.gsfc.nasa.gov (oceancolor.gsfc.nasa.gov)|2001:4d0:2418:128::44|:443... connected.
HTTP request sent, awaiting response... 500 Internal Server Error
2018-04-19 13:33:42 ERROR 500: Internal Server Error.

I don't have any problems downloading the L1A or L3 files so the connection seems fine. This has worked in the past so I am not sure what is wrong now. Any thoughts?

Thanks for your help,
Kim

by **OB.DAAC - SeanBailey** » Thu Apr 19, 2018 8:08 pm America/New_York

Kim,

If you call it like you report, it will work. But what the system saw was:
.../cgi/browse.pl/A2005152063500.L2_LAC_OC.nc_CHLOR_A_BRS.png?sub=l12image
notice the lack of the file= argument.

In fact, looks like youtried once successfully, then failed (because the call was incorrect):


####### - - [19/Apr/2018:13:33:09 -0400] "GET /cgi/browse.pl/A2005152063500.L2_LAC_OC.nc_CHLOR_A_BRS.png?sub=l12image&file=A2005152063500.L2_LAC_OC.nc_CHLOR_A_BRS HTTP/1.1" 200 2192 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36"
####### - - [19/Apr/2018:13:33:42 -0400] "GET /cgi/browse.pl/A2005152063500.L2_LAC_OC.nc_CHLOR_A_BRS.png?sub=l12image HTTP/1.1" 500 5458 "-" "Wget/1.14 (linux-gnu)"

Diving in under the hood can be "dangerous" :grin:

Sean