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Contains:  M 16, Eagle nebula, NGC 6611
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M16 Eagle Nebula

Technical card

Resolution: 3280x2450

Dates:July 5, 2018July 6, 2018

Astrodon HA 36mm - 5nm: 25x600" -15C bin 1x1
Astrodon Olll 36mm - 3nm: 23x600" -15C bin 1x1

Integration: 8.2 hours

Darks: ~50

Flats: ~50

Bias: ~75

Avg. Moon age: 21.84 days

Avg. Moon phase: 53.25%

Bortle Dark-Sky Scale: 4.00 job: 2523927

Locations: Healey "Utahopia" Observatory, Kaysville, Utah, United States

Data source: Backyard


The Eagle Nebula in blended Pallet

The Eagle Nebula is part of a diffuse emission nebula, or H II region, which is catalogued as IC 4703. This region of active current star formation is about 7000 light-years distant. A spire of gas that can be seen coming off the nebula in the northeastern part is approximately 9.5 light-years or about 90 trillion kilometers long.

The cluster associated with the nebula has approximately 8100 stars, which are mostly concentrated in a gap in the molecular cloud to the north-west of the Pillars. The brightest star (HD 168076) has an apparent magnitude of +8.24, easily visible with good binoculars. It is actually a binary star formed of an O3.5V star plus an O7.5V companion. This star has a mass of roughly 80 solar masses, and a luminosity up to 1 million times that of the Sun. The cluster's age has been estimated to be 1–2 million years.

The descriptive names reflect impressions of the shape of the central pillar rising from the southeast into the central luminous area. The name "Star Queen Nebula" was introduced by Robert Burnham, Jr., reflecting his characterization of the central pillar as the Star Queen shown in silhouette.



Randal Healey
License: None (All rights reserved)



M16 Eagle Nebula, 


            Randal Healey