Wednesday, July 19, 2017

imaged 70 Oph once again (Halifax)

The image of 70 Ophiuchi from 10 Jul '17 did not work out well so I asked the Burke-Gaffney Observatory robot to shoot it again. I also programmed it to shoot faster.

multi-star system 70 Oph in luminance

Luminance only, 1 second subexposures, 20 stacked shots. FITS Liberator, Paint.NET. North is up; east is left.

That's better! I can see the B companion rather clearly now. I "unstretched" or compressed the histogram in FITS Lib to desaturate the image.

Centred on GSC 00434 02340.

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Annual image log:

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

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