What kind of lens flare is this?

While photographing the moon yesterday I encountered some weird horizontal and vertical lens flare lines I've never seen before. Only showed up around the moon and it's really annoying. This is the first time this has happened to me. The blobs are fine but the lines I don't like.

Here are two 10mm 30s exposure shots, one at F/3.5 the other at F/11. Forgot to mention, shot without a filter, lens was a bit dirty but it wasn't much, doubt it could have caused that or could it?

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It's called Internal Lens Flare . Caused from a bright object within the picture . The spikes are from the shutter blades .

Thanks, I've just never seen the lines that clearly before

Xcelx wrote in post #10809077
Thanks, I've just never seen the lines that clearly before

I've seen the intrnal flares alot in my own images at night but the straight marks to the top and sides only i have never seen like this before .

As stated above. Internal lens flare. Usually happens with the bright sun in photos.

Wow, I've never seen those straight lines either!