Tuesday, June 18, 2019

sought OSO 97 (Halifax)

Wanted to capture OSO 97. A quad system in Hercules viewed but once in 1995.

WDS ID: 18164+2912OSO  97
precise coords: 181622.80+291221.2
last observed: 1995
number of observations: 1

pair: AB
PA: 116
sep: 16.7
magnitudes: 12.86 and 18.9

pair: AC
PA: 5
sep: 17.8
mags: 12.86 and 19.0

pair: AD
PA: 264
sep: 23.5
mags: 12.86 and 19.1

The star OSO 97 was not listed in SkyTools 3 Pro. But I found GSC 02104-1481 was at the noted location.

region surrounding double star OSO 97

Luminance only, 2 seconds subexposures, 12 stacked shots. FITS Liberator, Paint.NET. North is up; east is left.

Artefacts again.

I don't think I see any of the companions in questions, primarily because I did not expose long enough. I can tag mag 16 and 17 stars... Too short.


Shot again on 25 June but longer and with the SBIG.

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