(meteorobs) Chris(Cloudbait) Meteor Telescope?

[stange]

Drat!
I don't need blur. Got that already Chris.

Leo -I never get to be first in anything anymore. :-)  V-nice images!!

Thanks Gentlemen. YCS (back to the cave)

----- Original Message ----- 
From: "Chris Peterson" <clp at alumni.caltech.edu>
To: "Global Meteor Observing Forum" <meteorobs at meteorobs.org>
Sent: 2008/09/11 20:43
Subject: Re: (meteorobs) Chris(Cloudbait) Meteor Telescope?


> Sorry, Larry, it's not going to work. You need a much more sensitive 
> camera
> (probably with an image intensifier), and you need that camera to be very
> high speed, hundreds or thousands of frames per second. A larger aperture
> scope would help as well.
>
> Consider: with your 560mm FL scope, and a typical camera with 5um pixels,
> your image scale is 2.2"/pixel. For a meteor distance of 100km, that gives 
> a
> spatial image scale of 1 meter per pixel. The next big shower is the
> Geminids, which are very slow at 35 km/s. So in a single video frame of 
> 1/30
> sec, the meteor moves over 1000 meters, or over 1000 pixels on your 
> camera.
> Of course, the apparent speed is likely to be less since the path won't
> usually be perfectly perpendicular to your optical axis, but any meteor is
> still going to be massively motion blurred. You will learn more about the
> meteor with a wide angle lens, where at least you have largely frozen each
> frame.
>
> Chris
>
> *****************************************
> Chris L Peterson
> Cloudbait Observatory
> http://www.cloudbait.com
>
>
> ----- Original Message ----- 
> From: "stange" <stange34 at sbcglobal.net>
> To: "Global Meteor Observing Forum" <meteorobs at meteorobs.org>
> Sent: Thursday, September 11, 2008 9:06 PM
> Subject: Re: (meteorobs) Chris(Cloudbait) Meteor Telescope?
>
>
>> Chris & Ed,  Thanks for input.
>>
>> I have two telescopes that might be able to do the job, but only one 
>> heavy
>> free camera that is suitable because it is just 0.1 Lux. I do not want to
>> use a super-sensitive light camera like my Stellacam II because I want as
>> much detail as is possible without light bloom.
>>
>> The most suitable telescope is a Stellarvue Nighthawk Next Generation 
>> 80mm
>> F7 (SV 80ED) Fl=560mm, which has already been adapted to fit a Meade
>> AutoStar mount.
>>
>> Now I need to know when the next BIG shower will occur, while I find some
>> way to focus mid-atmosphere ahead of time. I will run the camera with
>> HandyAvi in meteor trail mode.
>
> _______________________________________________
> Mailing list meteorobs: meteorobs at meteorobs.org
> To UNSUBSCRIBE, email: owner-meteorobs at meteorobs.org
> http://lists.meteorobs.org/mailman/listinfo/meteorobs