Friday, March 10, 2017

imaged HJ 207 (Halifax)

The Burke-Gaffney robot imaged double star HJ 207 for me (centred on the star TYC 00879-0207 1). It is a target in Coma Berenices that I first observed in May 2013 but did not make good notes on.

double star HJ 207 in luminance

Luminance only, 5 seconds subexposures, 10 stacked shots. FITS Liberator, Paint.NET. North is up; east is left.

This is a simple pair of faint stars near the Virgo border. They are nearly equal in brightness. If I had to guess, I'd say the left-most or east star is the brighter, by a hair. SkyTools 3 Professional shows conflicting information: in the Object Information box, the magnitudes are noted as 11.2 and 10.3; while hovering over each star in the chart shows they are both 11.2. The WDS says 11.23 and 11.24. They are oriented almost perfectly east-west. So that would make for a position angle of around 90° (or 270). ST3P says: 100°.

Won't know the colour until I assemble the LRGB data...


Assembled in colour.

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