BinoSky - best bets for stargazing with binoculars
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Open cluster NGC6530, and the Lagoon Nebula, M8, in Sagittarius
A map of the star field. Magnitudes are given without a decimal point, e.g. 67 is to be interpreted as magnitude 6.7.

A three full magnitudes dimmer than the Orion Nebula, this can most charitably be desribed as an interesting challenge for the binocular observer. Not worth attempting except under optimal conditions. As is often the case with nebulae, it can be hard to tell that the bright core is anything other than a star.

60-degree field of view

Data for NGC6530 (Janes, Duke, and Lynga, 1987)
RA 18 05
dec -24 21
total V magnitude 4.6
NGC number 6530
Trumpler class II 2 m n
angular diameter 14'
distance 1500 pc
age (Myr) 10
integrated B-V .14
observed stars 113
earliest sp. class O5
brightest star 6.0

Data for M8 (Janes, Duke, and Lynga, 1987)
total V magnitude 5.8

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(c) Copyright 1998 Benjamin Crowell. All right reserved.
Photos from the Digitized Sky Survey,
Sky maps created by Your Sky,