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Old 01-02-2014, 09:41 PM
malclocke (Malc)
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malclocke is offline
 
Join Date: Jun 2012
Location: Christchurch, New Zealand
Posts: 183
A bit of nova trivia - given we are now on around day 60, and that we have observed expansion velocities (if that is what they are) of around 2000 km/s, the ejecta should now have a radius of around 70 AU, almost twice the orbit of Pluto!

Using the small angle approximation (θ = D x 206265/d, where D is the size of the object and d is the distance), this figure combined with the estimated distance from the ATCA of 3.3 kpc, this gives an angular size of 0.04 arcseconds.

Anyone fancy trying direct imaging
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