(meteorobs) Meteor cameras? lower cost, more sensitivity, COLOR & BW

Chris Peterson clp at alumni.caltech.edu
Fri Nov 28 23:05:05 EST 2008

Yes. But star tests are not equivalent to what you get with meteors. Stars 
dwell on the same pixels, meteors spend only a short time on any one pixel. 
The EX2 version of this camera uses as sensor with more pixels, which are 
smaller. The end result is that meteors generally produce a poorer S/N, 
which is equivalent to less sensitivity. I've run the two cameras 
simultaneously, and the EX2 misses meteors the regular version catches.

(However... I did this test a couple of years ago, and these cameras are 
always undergoing silent design changes that aren't apparent in the part 
numbers. It's possible something has changed.)


Chris L Peterson
Cloudbait Observatory

----- Original Message ----- 
From: "stange" <stange34 at sbcglobal.net>
To: "Global Meteor Observing Forum" <meteorobs at meteorobs.org>
Sent: Friday, November 28, 2008 8:49 PM
Subject: Re: (meteorobs) Meteor cameras? lower cost, more sensitivity,COLOR 
& BW

> Hi Chris.
> You might want to review this .pdf URL of independant star test made on a
> number of cameras thru' 8" & 10" Sct's using lmovie scaling of star
> amplitudes.
> It shows the PC164CEX-2 is more sensitive than the PC164C.
> http://www.asteroidoccultation.com/observations/PreliminaryReportSensitivityTestsRevA.pdf
> Larry

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