Like the Messier Catalog, The Caldwell Catalogue is an astronomical index of 109 star clusters, nebulae, and galaxies for observation by amateur astronomers.

The introduction of unnatural-looking purple stars to your image, is a common problem with processing narrowband images in the well-known Hubble colour palette (or “SHO” image). 

What do all these terms mean?

It’s natural when you first arrive at Telescope Live to want to immediately produce a photo.Much frustration can be had if you don’t know where to start.

July 20th marks another milestone in space tourism.

Planetary Nebulae.