← Back to dex
Rare nebula 40 EP

California Nebula

RA 60.8101° · Dec 36.3675° · openngc

Loading sky survey…
🌌 View in 3D star map
Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 5 badges
40 pts · Rare
Rare 50 pts → Epic
  • Bigger on the sky than the full Moon +12
  • Nebula +8
  • Has a proper name +8
  • Bright deep-sky object +6
  • Diffuse nebula +6
Total score 40

10 more points to reach Epic.

Badges

  • Nebula · +8
  • Bright deep-sky object · +6
  • Has a proper name · +8
  • Diffuse nebula · +6
  • Bigger on the sky than the full Moon · +12

Trivia

What it actually is

  • What it actually is. A nebula: a cloud of interstellar gas and dust, thinner than the best vacuum ever made in a laboratory yet spanning light-years.

Find it in the sky

  • How to spot it. At magnitude 5 you can see it with your own eyes from a dark site, over in Perseus.
  • Northern sky. It rides the northern half of the sky — an easier target the further north you are.
  • Best time of year. It stands highest in the middle of the night around November — that's when to go looking.

Its true colour

  • Its true colour. Nebular colours are chemistry made visible — red for hydrogen, teal for oxygen, blue where starlight is merely scattered.

What's in a name

  • Named. Notable enough to have earned a proper name, not just a catalogue number.

How we came to know it

  • The New General Catalogue. Its NGC number comes from J. L. E. Dreyer's 1888 catalogue, itself built on decades of sky sweeps by William Herschel and his sister Caroline.

Properties

constellation
Per
dso type
Neb
mag
5
name
California Nebula
named
yes
size arcmin
160

About California Nebula

California Nebula is a rare nebula. It sits in the constellation Per and shines at apparent magnitude 5.

A nebula: a cloud of interstellar gas and dust, thinner than the best vacuum ever made in a laboratory yet spanning light-years.

How to see it

Look for California Nebula in the constellation Per. At apparent magnitude 5, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, California Nebula is best seen from a dark site away from city lights, and when it is above the horizon depends on your latitude and the time of year. The visibility panel above works out tonight's viewing window for your saved location.

Why California Nebula is a rare nebula

California Nebula scores 40 points on Spacedle's rarity scale, which places it in the rare tier. Another 10 points would lift it into a rarer tier.

That score comes from 5 science badges — Nebula, Bright deep-sky object, Has a proper name, Diffuse nebula and Bigger on the sky than the full Moon — each earned for a real, measurable property of the object. Rarity on Spacedle is never random: the more remarkable an object's astrophysics, the more badges it collects, the higher it scores, and the rarer it ranks.