Name that Moon in one

OK. Here's a challenge. The moon was lighting up the sky early this evening and temptingly sitting in view from the 'back gard' so I got the old telescope out to have a quick peek. The moon is in its 'first quarter'. When the moon has a shadow like it does now it seems to accentuate the features close to the shadow. And at this point in the moons phases a very large crater at the top stands out.

So the challenge is name that crater.

My pic is not that great ...again!. But it is clear enough.