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Old 25-07-2018, 12:21 PM
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DaveGee (Dave Gault)
Occultation Observer

DaveGee is offline
 
Join Date: Aug 2006
Location: Blue Mountains, Australia
Posts: 232
Quote:
Originally Posted by Wavytone View Post
Forget the graze if you live in Sydney/Brisbane/Melbourne/Hobart.

You can forget mag 7 stars even in a scope - I tried yesterday.
You do know what a graze is... don't you? I don't think you do!

The graze I was referring to is of SAO 163510 - see previous map.

This star is occulted by the moon during totality, ONLY for observers south of the red line on the map - the northern limit. The graze occurs at sites along the northern limit. Sites South of the Northern Limit will see a Total lunar occultation (during totality).

As to the visibility or not. Most occultation observers use video nowadays and it's quite common to observe lunar occultations of mag. 7 stars will into twilight. I've been able to read my printed notes without a torch light, while the star is quite visible in the scope. Having said that, it is quite hard to predict visibility during eclipse because the of the colour of the umbra.

And notwithstanding clouds...
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