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NGC 2440 — Planetary Nebula in Puppis

Planetary Nebula Good (47/100)
Magnitude 11.0m PlanetaryNebula Puppis (Pup) Visible
Star Map
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1Properties

Magnitude 11.0
Angular Size 0.3′
PN , cB, not v well def

Position & Identifiers

RA 07h 41m 55.4s
Dec -18° 12' 30.6"
Constellation Puppis (Pup)
Catalog NGC 2440

2How easy to spot?

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Telescope Bortle 3 Bortle 4 Bortle 5
80mm refr. Imp. Imp. Imp.
150mm Newt. V. hard+ V. hard V. hard
C8 203mm V. hard+ V. hard+ V. hard
Easy Medium Hard Very hard Impossible

Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs

With O-III filter

Telescope Bortle 3 Bortle 4 Bortle 5
80mm refr. V. hard+ V. hard Imp.
150mm Newt. Hard+ Hard Hard
C8 203mm Hard+ Hard+ Hard
Stretch on Seestar S50

3Visibility

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Best season Dec – Feb (peak: Jan)

4 Filter Response Guide

5 Eyepiece View

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125x TFOV: 0.4° Lim. mag: 13.6
N E

NGC 2440 · 0.3′ · N up, E left

6 Best Magnification

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7 Central Star

8 Surface Brightness

Nearby in the Sky

Other targets within a few degrees — pan your scope a little and keep exploring.

Visibility scores assume a 150 mm Newton at Bortle 4.

NGC 2432
Easy
Open cluster
Open Cluster mag 10.0 0.9° Puppis
NGC 2438
Hard+
Planetary nebula — try an OIII filter
Planetary Nebula mag 10.0 3.5° Puppis
R CMa
Medium
Eclipsing binary, period 1.1d
Variable Star mag 5.70 5.7° Canis Major
Show on Map

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