(IAAC) M 57 halo?

I have posted this last week on bigdob-l@ucsd.edu, but I think it might be 
helpful for me to ask for it on IAAC...
Is anybody out there who managed to see the Halo around M 57? I tried to see it  
with my 20incher in a good night (6,7mag)- but I had no success. I think the 
problem is the weak [OIII]- emission of the Halo (strongest emission in [NII] 
With kind regards from Germany,  Jens
P.S.: I got some descriptions of observations with a 36incher.
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