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G'Day Liz and OBMY;
Re: Hartley 2 Obs
Interesting that OBMY's observation notes mentions that the coma is 'large and diffuse'.
I'm trying to figure out why they couldn't detect the (only recently announced) CO2 jets emanating from its dark side, prior to the flyby by Deep Impact.
Apparently, CO2 in the jets isn't detectable remotely by either our space bound scopes or ground based scopes. (Which is one reason justifying the probe's flyby).
Would've thought that if the coma was big, there'd be enough background light and hence we'd be able to pick up enough of the absorption spectrum to detect CO2 from Earth/orbit.
Big mystery this one. (We've been wrangling on the Science forum about it since yesterday).
Any thoughts/comments/ideas ?
Cheers
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