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TWO NEW DOUBLES IN TRIANGULUM


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4.50pm Weds. - 8SE + Focal Reducer – aligned on Jupiter.

Sigma 219 - 8th mag unmatched pair, 11.6 arcsec separation – a physical double, not in CDSA. Field sparse x36, except for bright “arrowhead” of stars close by. Got the split at x64 – clear, with fainter secondary at 7 o’clock.

Sigma 285 - 7th and 8th mags, 1.7 arcsec. Fairly sparse field at x36, but a line of three nearby stars helped with confirmation. Going straight to x191, I lost the target, so did it in stages: x91, x116, x191- possibly got the split, then on to x213 – very close, fainter star at 7 o’clock in moments of good seeing. Just to be sure, I went up to x256 and had no doubt about the split.

(Sigma 286 – a short hop from the above - should have been easier at 3.0 arcsec, but the sec was only 10th mag and I believe the rising bright Moon nearby stymied the observation!)

Finished with M31 and the Double Cluster.

A satisfying and somewhat challenging 75 minutes.

Doug.

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