그거 돈주고 다운받으면 되는 것 같군요..

참고로 가장 완벽한 정삼각형 삼중성은 이거라는군요.

Sinnott 10 TRIPLE STAR IN CYGNUS
21h35.1m +38◦07
Magnitudes 10.4, 10.6, 10.8
Separations 19, 19
Position angles 313◦, 9◦
The most perfect equilateral triple star in the heavens, according to Roger
W. Sinnott, who discovered it by doing a computer search of the
Hipparcos and Tycho catalogues; not previously noted as a multiple star.
Find it by right ascension and declination, or by going to 72 Cygni (SAO
71480, NexStar Star 5071, mag. 5) and slewing half a degree to the south.
The triple star looks like a nebulous patch at 50×; higher power reveals
its true nature.

sky & telescope 사이트에서? 잡지 찾아보고 없으면 다운 받아야겄네...

아, 그리고 Sinnot10은 optical multiple인 것 같아요. 옵티칼이든 뭐든 예쁘면 되지만^^