SIMBAD references

L. Kohoutek, University of Hamburg, writes that he can see PN G75.5+1.7 on both red and blue "transparencies" of the second Palomar Sky Survey (but not on the first POSS photographs), noting that the nebula is extremely faint there (only a trace), but having the same size as on the current images. Also, the blue star in the center is of similar brightness at all epochs; this does not support a nova nebula, as the nebula has not changed in about sixteen years. Spectroscopy is encouraged, though this will be difficult because of its faintness.