NGC 3532 or Caldwell 91 is an open cluster in the constellation Carina.
The Wishing Well Cluster, comes from the resemblance of its stars to coins shimmering at the bottom of a Wishing Well.

The Red Hydrogen nebula rising from lower Right is NGC 3503 and from Right FZ-DN 154.

It lies only 3° from the remarkable star Eta Carinae and its associated nebula. NGC 3532 was first recorded by Nicolas Lacaille in 1752.
It has an apparent visual magnitude of 3.0 and its angular diameter is 55 arc-minutes.
NGC 3532 lies at an estimated distance of 1600 light years.

Imaged with the 16" f3.75 Dream Astrograph.
Apogee Alta U-16M camera.
HaR-RGB image

Ha - 30 min
RGB 10 minutes each Bin 2x2

(Total of 60 minutes )

Imaged from Tivoli farm in Namibia July 2013.