I have changed the autoguide lens of my LISA (I have used the old I have got before for autoguiding with ESHEL and now, all is good with this instrument and I don't want all breaking).
I don't correctly remember the field I had before but I think with this new lens, the part which is not usable is more important than before (black part on the right of the image that is the edge of mirror).

Please, Could someone, who autoguide a LISA with a 314L+, confirm that the black part on the right edge of image is the same ?
Thank you
Stephane