After I read your post, I had to go back to some pictures I took last night. I was experimenting with my Celestron 80mm GoTo, and with this Orion iphone eyepiece adapter. I took some pictures of the moon with a 10mm Plossol, and a moon filter and skyglow filter (to minimize the overexposure I was getting on the iphone). I took a few shots, and then this morning after reading your post about Purbach's cross, I went back to the photos to take a look. Sure enough, there it is.
Attached are the raw, unretouched single photos of the moon taken through an iphone and small refractor.
How fortuitous!
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