what is this groove?

[CSM]

Looking back at my Lunar images and trying to identify what exactly I have imaged I found this one which has baffled me.  Searched through Virtual Moon and can't match up anything.  It is from 23rd Feb 2013 which is almost a full Moon.

[Bill]

It's the Sirsalis rille.

Bill

[CSM]

Thanks Bill, but it doesn't look anything like that if the Virtual Moon is anything to go by, and is near the edge of the Moon.  And Googling it seems to give different places for that!

[Blazar]

Rimae Hevelius?...though you would need at large scope to get that. what were you using? can see you were following the terminator..and assume you were down the lower half of the surface. Switch on full globe in the VMA, and you will see it has the same  'kink', though still not to sure....

[CSM]

My constantly rotating my image I eventually managed to get it to resemble http://stargazerslounge.com/topic/184260-grimaldi-hevelius-rimae-sirsalis-cruger-crater-schroters-valley-aristarchus-pythagoras/ which is indeed Rimae Sirsalis.  So apologies to Bill and thanks.