(meteorobs) Optimized filters for daytime fireball videocapture?
Chris Peterson
clp at alumni.caltech.edu
Mon May 25 16:39:41 EDT 2009
You can easily use a bandpass filter to isolate any single emission
wavelength. There are better choices than Fe or Ni unless you are
specifically looking for iron meteors, which will be fairly rare. It becomes
more complex if you want to allow several different bands through at the
same time.
Using any filter will reduce your signal, limiting you to even brighter
events. The question is how much contrast will be enhanced by using a
filter. You would want to measure the sky background level through your
filter in order to assess that.
Chris
*****************************************
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com
----- Original Message -----
From: "Thomas Ashcraft" <ashcraft at heliotown.com>
To: "Global Meteor Observing Forum" <meteorobs at meteorobs.org>
Sent: Monday, May 25, 2009 2:22 PM
Subject: Re: (meteorobs) Optimized filters for daytime fireball
videocapture?
> Hi Ed and all,
>
>
> I wonder if it is possible to isolate the specific spectrographic
> wavelength for burning ( or ionizing?) nickel-iron?
>
> Thomas
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