Do this indoors, in the light, before the sky matters.
Start from the Moon
Its phase decides the evening. Near full, plan for the Moon itself, planets and double stars. Near new, plan for everything faint.
Then from what is actually up
An object below the horizon at the time you will be observing is not a target. A planisphere set to the date and hour answers this in seconds, and it is the whole reason to own one.
Order the list bright to faint
The eyes improve through the evening. Putting the hardest object first wastes it; putting it last gives it the best chance.
Write the list down
On paper, readable by red light. A list on a phone costs dark adaptation every time it is consulted, and that is the one resource the evening cannot replace.
Leave room for one thing you have never found
Every session should include something that might fail. That is where the skill comes from, and a list of certainties stops teaching anything after a while.
The questions that keep arriving
How many targets is realistic?
Fewer than you expect. Four or five worked through properly beats twenty glanced at, and the difference in what is remembered afterwards is larger still.
Should I plan around the Moon?
Always. A bright Moon makes faint objects hopeless and the Moon itself excellent, so the phase decides the kind of evening rather than whether to go out.
Last reviewed 17 September 2026