Tail of the Scorpion

object name: NGC6231
object type: open cluster
location: São Paulo city, Brazil
date: July 26, 2010 01:00 am, local time
midia: graphite pencil steadtler mars lumograph number 6B, 4B, 2B, B, paper white 90g/m²
telescope maksutov 90mm in EQ1, eyepiece superploss 32mm, viewfinder GSO 8×56 erector prism
average light pollution, affected objects to 30 °
good visibility of the sky, little wind, 21°C

Guilherme de Andrade

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