Monday, November 14, 2016

shot HD 57102 (Halifax)

The BGO robot imaged HD 57102 aka 19 Lyn for me. Struve labelled it 1062. A multi-star system.

multi-star system HD 57102 in luminance

Luminance only, 3 seconds subexposures, 10 stacked shots. FITS Liberator, Paint.NET. North is up; left is east.

On my View Again list to chase down the C companion. Easily spotted in this image although it is extremely faint. It is to the west-north-west of the bright and tight AB pair, almost inline.

SkyTools says the C star is magnitude 10 to 11 but it seems dimmer. The star beyond is GSC 03785-0554 which the software notes as 14 (but is poor quality). The bright pair north of D, with GSC 03785-0041 and GSC 03785-0653, are in the mag 13 range and the C star is similar to those.

I don't remember the telescope I was using on first viewing 19 Lyncis but perhaps C was below the light grasp.


According to the Washington Double Star catalogue, C is magnitude 12.8.


Discovered that in my SkyTools software, I had never recorded this in the Multiple Stars life list. And it never made it to the View Again. Up to date now!


LRGB data combined on 11 May '18.


Wikipedia: 19 Lyncis.

No comments: