First observations and magnitude measurement of Starlink’s Darksat

  title={First observations and magnitude measurement of Starlink’s Darksat},
  author={J Tregloan-Reed and Angel Otarola and E. Ortiz and V. Molina and J. Anais and R. A. Gonz'alez and Juan Pablo Colque and Eduardo Unda-Sanzana},
  journal={Astronomy \& Astrophysics},
Aims. We measured the Sloan g′ magnitudes of the Starlink’s STARLINK-1130 (Darksat) and 1113 low Earth orbit (LEO) communication satellites to determine the effectiveness of the Darksat darkening treatment at 475.4 nm. Methods. Two observations of the Starlink’s Darksat LEO communication satellite were conducted on 2020/02/08 and 2020/03/06 using Sloan r′ and g′ filters, respectively. A second satellite, STARLINK-1113, was observed on 2020/03/06 using a Sloan g′ filter. The initial observation… 

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