Wednesday, May 20, 2020

imaged 70 Oph (Halifax)

Clear skies. New Moon. Asked BGO to image 70 Ophiuchi again in its 88-year orbit. Aimed at GSC 00434 02340 which puts Σ2272 to the bottom-right.

fast-moving binary 70 Oph in luminance

Luminance only, ½ second subexposures, 12 stacked shots. FITS Liberator, Paint.NET. North is up; east is left.

This is the fifth year of imaging!

Annual image log:

2016 Aug
2017 Jul
2018 May
2019 May
2020 May < you are here
2021 May
2022 Aug
2023 May

Forgot to measure the position angle change last year...

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