Hi Frank, I just had a look at NGC7009 on The Sky 6 and saw that there is another planetary PLN 37-34.1 only 38" from it, magnitude 8.3 and 0.4'x0.4' . So should be within the FOV on the cropped image. Strange that there is no sign of it.
Just did a google search and states that NGC 7009 and PLN 37-34.1 are the same object. Just goes to show some planetarium programs have a few mistakes within.
Sorry Frank.