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NGC 6661 — Galaxy in Hercules

Galaxy Fair (33/100)
Magnitude 11.9m Galaxy Hercules (Her) Visible
Star Map
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1Properties

Magnitude 11.9
Angular Size 2.0 arcmin
F, vS, R, gbM

Position & Identifiers

RA 18h 34m 36.0s
Dec +22° 55' 00.0"
Constellation Hercules (Her)
Catalog NGC 6661

2How easy to spot?

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

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

Medium on Seestar S50

3Visibility

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Best season May – Jul (peak: Jun)

4 Eyepiece View

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125x TFOV: 0.4° Lim. mag: 13.6
N E

NGC 6661 · 2.0′×2.0′ · N up, E left

5 Best Magnification

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6 Surface Brightness

7 Size Comparator

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