Moon reflection question

[rcliffor]

Last night I tried a couple of moon shots. Both were taken with the same settings in shutter priority. The only difference was the set shutter speed. The first was set at 1 second and produced a reflection. The second was set at 1/400 and the reflection is gone. I am curious what causes the reflection? They have not been processed, just reduced in size.

http://farm4.static.flickr.com/3338/3575250553_f42fb0737b_o.jpg

http://farm4.static.flickr.com/3370/3575250649_6cd83e4733_o.jpg

[jhkphoto]

i don't know but it looks cool :)

[Bernoulli]

It's an internal reflection in your lens system. They can be pretty annoying and, like jkhphoto said, sometimes cool. You don't see it at 1/400 sec because it's too faint to register at that shutter speed.

What lens was this?

[rcliffor]

This was the Tamron at 270mm.

[Celestron]

Sometimes if you change the f/stop to a higher # it will slow down or stop this internal reflection . I have that problem also :( .

[grfics]

Did you have a filter on the lens? I've seen this from even a good UV filter.

[Celestron]

I've got this reflection with and without a filter .

[SteveInNZ]

I like that the reflection has some lunar detail in it while the real image has blown out in the same area but shows detail in the shadow.
You've invented a new form of lunar photography. Well done.

Steve.