Messier/type:M 75 / globular cluster
mag/dia/dist:8.55 / 6' / 59,300 ly
constellation:Sagittarius
date/time/place:Jun 17, 01 / 02:10 / bangkok
trans'y/seeing/l-poll:good / good / low
telescope:newtonian 4.5", f 8.8
eyepieces/power:25mm / 40x
sky atlas page:22
Start hopping from the tea pot's handle comprises of four star 27,34,40 & 38. From star 40 hop to star 42-->stars 47, 48 & 49-->stars 52 & 51-->stars 58, 59, 60 & 62. Star 59-->star 60-->point to three faint stars mag6, 6.5 & 7 formed as small triangle near M75. M75 locates opposite with star mag6, also using triangle technic to confirm its position: star mag6, star mag6.5 and M75 formed as a triangle which have equal two sides i.e.the side between star mag6 to star mag6.5 equal to the side between star mag6,5 to M75. At eyepiece, M75 appeared as faint, small, round, stable image, gradually brighter at center, located on poor stars field.
Refer to text: high concentration, bright, round, large, extend 150 ly.
Refer to REDSHIFT III: confirm stars field is OK, the bright star in north (bottom) is HD190617, mag7.99, distance 154 ly. spectral & luminosity same as the Sun. If the alien on planet orbit around those star use telescope point to the Sun, it should be look like the this. Home
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