(meteorobs) Large fireball over New Mexico Oct 9, 2009

Larry ycsentinel at att.net
Sat Oct 10 00:14:56 EDT 2009


Thomas,

Bring up the fireball image on Sentinel with the replay button and then 
press the Light Curve button (if you have it) to get the light curve data.

YCS

----- Original Message ----- 
From: "Thomas Ashcraft" <ashcraft at heliotown.com>
To: "Global Meteor Observing Forum" <meteorobs at meteorobs.org>
Sent: 2009/10/09 20:53
Subject: Re: (meteorobs) Large fireball over New Mexico Oct 9, 2009


> Larry wrote:
>> Thomas, that looks a (LOT) brighter than the moon!. What is the peak 
>> light
>> graph amplitude in pixels?.......30,000 ?
>>
>> I suspect it was as bright as the Sun!!!!
>>
>>
>
> Larry,
>
> I might be wrong but my understanding of fireball magnitude is that you
> assess the bright core of the meteor without necessarily factoring in
> the fainter surrounding flash.  Maybe a magnitude expert could address
> this question?  At least in this specimen the Moon is in close proximity
> to the fireball and it is a known magnitude of -10.92 at that exact
> moment ( without extenuating factors which might bump the mag higher in
> this case due to altitude, atmospheric extinction and other possible
> factors).
>
> Thomas
>>>
>>> http://www.heliotown.com/Fireball_20091009_Ashcraft.html
>>>
>
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