What happened to my RAW files?

I went out to shoot the Milky Way for the first time. I used a Sony A7RII with a Rokinon 24mm f/1.4 MF lens, shooting RAW+JPEG. When I came home and looked at the RAW photos, they all looked like this. v v vBy the way, this is a screenshot of the .ARW file since I can't upload those to RedditHere's the same picture's JPG version v v vhttps://i.redd.it/4bm0x36wsfq31.pngWhat's happening to the RAW file? On the camera back only the JPG is displayed so I don't know how it would look like on the camera back.Edit: My photography teacher warned me about Reciprocity Failure. Is that what happened?​If there is another subreddit I should rather upload this so, please tell me. via /r/photography https://ift.tt/2VbHAhQ