Sunday, March 19, 2017

procured HR 6246 (Halifax)

The Burke-Gaffney robot tagged the multi-star system HR 6246 aka in Σ2103 Hercules, centring on Tycho 00974-0733 1.

multi-star system HR 6246 in luminance

Luminance only, 6 seconds subexposures, 10 stacked shots. FITS Liberator, GIMP. North is up; east is left.

When I first viewed this system on the evening of 22 May '15, I did not spot the C star. While B is too close to bright A in the image, C is obvious at the 4 o'clock position (i.e. south-west), close, with D, away, at 7 o'clock (or south-east).


Stretched dramatically with the x1/2 function. The B star emerged!

B companion visible in stretched image

Zoomed/cropped. B is at the 10 o'clock position.


Processed in colour on 6 May '17.

No comments: