de Mairan's Nebula

Observed:  Points: 10

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Current Info for Observer

as of 10/22/2021 10:39 p.m.

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General Info

TypeDiffuse Nebula
ConstellationOrion
Right ascension5h35'31.300''
Declination-5°16'3''
Magnitude9
Distance1,600ly
Size20 arc min
Catalog Designations NGC1982, M43
Discovered 1731 Jean-Jacques Mairan

Generate a finder chart

The following form will generate a PDF finder chart suitable for printing using to locate objects in the sky with your telescope!

The Date is only really useful for solar system objects, as deep space objects move measurably only on a galactic timescale.

The larger the F.O.V (field of view), the more "zoomed out" the object will appear. It can be helpful to print several charts of the same object with different field of views.

Limiting the magnitude (remember, lower magnitude means brighter!) of stars and objects can make sure your chart is not cluttered with dim objects that you may not be visible to you anyway. The defaults are good, but try experimenting with raising and lowering the values.

Observed one central star with what looked like a cloud around it. M43 is separated from M42 by a dark channel.

Can't view M42 without seeing M43. Smaller puff to the north of the Trapezium area of the nebula.

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