NGC/IC Project Restoration Effort

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NGC6604

 

Basic Information


Location and Magnitude


Right Ascension: 18:18:6.0
Declination: -12:13:0
Constellation: SER
Visual Magnitude: 6.5

Historic Information


Discoverer: Herschel W.
Year of discovery: 1784
Discovery aperture: 18.7

Observational


Summary description: Cl, lRi, lC
Sub-type: I3p

Steve's Notes

===== NGC 6604 17.5" (8/10/91): at 140x appears as a prominent 2' arc of five stars including a mag 7.5 star and a double star on the southwest end. Surrounding this arc is a 5' group of roughly two dozen stars elongated N-S, which includes two faint pairs. My observation of the surrounding emission complex Sh 2-54 is appended below. 16x80 finder (8/10/91): very large, very faint emission haze (Sh 2-54 = Gum 84) surrounding a very large group of stars, improves with UHC filter. The Eagle Nebula was very prominent in the field to the south. On the north side of this large HII region is a small brighter knot = Simeis 3-132 that was visible in the 17.5" at 64x using a UHC filter as a moderately bright, 3'x2.5' glow, slightly elongated N-S. The eastern side of this HII knot has a sharper, linear border. Also viewed at 220x unfiltered and a group of a half dozen mag 12-13 stars extended N-S in a string are superimposed near the eastern boundary. This obscure, but relatively easy nebula is located 30' N of open cluster NGC 6604 on the north end of Sh 2-54.