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| Messier/type: | M53 / globular cluster |
| mag/dia/dist: | 7.7 / 13' / 56,000 ly |
| constellation: | Coma Berenices |
| date/time/place: | Feb 4, 01 / 04:20 / bangkok |
| trans'y/seeing/l-poll: | fair-low / fair / medium-high |
| telescope: | newtonian 4.5" f8.8 |
| eyepieces/power: | 25mm / 40x |
| sky atlas page: | 7 |
Start hopping from Arcturus-->Muphrid & star 4 in Bootes, hop to star 42 in Coma Berenices.
From star 4 in Bootes to star 42 in COma Berenices is very long distance and have no
bright star to help to hop. I shifted RA axis to west direction as star 4 & 42 are
nearly same DEC. A star mag6 and double star mag6.5 appear in the same FOV of finder scope
help to confirm the bright star is star 42. M53 locates at one corner of imaginary triangle
comprise of star 42, star mag6 and M53 itself, it couldn't be seen in finder scope.
At eyepiece, M53 appeared as faint round, small smudge of light which need avert vision
and waiting for moment of good seeing.
Refer to text: Medium concentration, large, bright, extend 240 ly.
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