BINOCULAR TOUR
May 20, 2021
2 minutes
With Steve Tonkin
1. M39
iven dark adaptation and a decent sky, M39 can be visible to your naked eye; Aristotle described it as “comet-like” in 325 BC. In these conditions, your 10x50s will reveal an equilateral triangle of 15 to 20 stars. However, under brighter
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