Stretched with Generalized Hyperbolic Stretch using a small (10 pixel) Symmetry Point inside the nebula.
From Wikipedia:
NGC 40 (also known as the
Bow-Tie Nebula and
Caldwell 2) is a planetary nebula discovered by
William Herschel on November 25, 1788, and is composed of hot gas around a dying star. The star has ejected its outer layer which has left behind a smaller, hot star with a temperature on the surface of about 50,000 degrees Celsius.
[3] Radiation from the star causes the shed outer layer to heat to about 10,000 degrees Celsius,
[3] and is about one light-year across.
[3] About 30,000 years from now, scientists theorize that NGC 40 will fade away, leaving only a white dwarf star approximately the size of Earth.
[3]Currently the central star of NGC 40 has a
spectral type of [WC8], indicating a spectrum similar to that of a
carbon-rich
Wolf–Rayet star.
[4]Previous version with same Stellarvue scope and SBIG 8300M camera, I'll take the ZWO:
NGC 40 BowTie 
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