| Marcos Valério Mataratzis | ||||
| Star:
Gamma Crucis Date & Time: 05/03/2004, 7:10 PM UT Seeing: 7 <1-10 Seeing Scale (10 best)> Transparency: <1-10 Scale (10 best)> Location of site: Rio de Janeiro, Brazil (Lat 22°54´ S, 43°14´ W) Site classification: Suburban Conditions: Temperature: 27°C Humidity: 70% Sky darkness: 5.0 <Limiting magnitude> Telescope: 83mm refractor (f/14.7) Magnification: 78x, 102x, 163x, 203x + barlow |
Ever watched this M4 dark
orange/red star as a double. Recently discovered that it was a quadruple system. So, I checked it out for other 2 components. AB pair are 1.6 and 6.5 widelly spread, 110.6" at position angle 31°. B component is white. BC pair is not easy: C component (magnitude 7.4) is only 1.0" appart at 179°. Could not split this pair. I saw it as an 8. AD pair is very easy. D is a 9.5 magnitude star at 155.1" at 82°. It´s a wonderfull system! Although I could not see colors in C and D components, there is a good color contrast between A, B and D components. Main pair can be seen at any magnification while C component could only be barelly seen at high magnification. 
|
|||