NGC 6543, "The Cat's Eye Nebula", a planetary nebula in the constellation Draco

NGC 6543, “The Cat’s Eye Nebula”, a planetary nebula in the constellation Draco

• Object Name (NGC 6543)
• Object Type (Planetary nebulae)
• Location (OAB – Bauduen – Verdon – France)
• Date (October 16th 2014)
• Media (graphite pencil, watercolour, white paper, inverted via

To obtain this sketch I use the following optical combinations via the 24” f/d 3.3 on equ. mount of the OAB (Observatoire Astronomique de Bauduen)
An OIII filter to obtain better contrasts. Under a magnification of 240X and the OIII filter the nebulae center darkening is clearly visible.
With the same magnification but without the filter we can easily see the central star with direct vision; anyway we are a little dazzled by the close light of the nebula.
With a magnification of 120X we can observe the structure of one or two of the outer rings.
A 550x magnification allowed me to discern one of the two jets that extend the basic ellipse.

Michel Deconinck