Best of AOP - Star Clusters


This object, sometimes known as the Butterfly Cluster, is the first open cluster in Messierís catalogue. At 1600 lightyears away, it is a beautiful binocular object.

Star map is navigable within this page.

Last Updated: 24-Jun-2014

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About This Image

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76mm Televue (480mm f/6.3 with TeleVue 0.8x Field Corrector) 

SBIG ST10XME CCD camera with color filter wheel

LRGB color production was used to create this image.

Luminance = RGB (synthetic) binned 1x1

Red = 20 minutes binned 1x1

Green = 20 minutes binned 1x1

Blue = 20 minutes binned 1x1

Minimum credit line: Lawrence Johnson and Kathy Ortega/Adam Block/NOAO/AURA/NSF