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Hi Chuck,

    The minimum shutter speed for the SBIG ST-7XME is 0.11 second. I don't 
know what the limiting magnitude of that shutter speed. I know that a full 
frame transfer requires 1 second. I know that the transfer speed can be 
improved by only transferring small portions of the frame.

    CCDSoft can process the data in two methods. First, on a stationary 
object, such as a star, it will create a light curve. Second, on a moving 
object, such as an asteroid, it will create a path.

    I can understand you not wanting to spend money you don't need to.

Tandy W. Carter Jr.
[log in to unmask]
http://home.att.net/~tandy.carter/
----- Original Message ----- 
From: "Charles Broward" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, January 23, 2007 2:01 PM
Subject: Re: Up-Coming Occultation


> Hmmm,
> The occultation events need to be recorded with at least a 1/10 sec 
> resolution...I know my Neximage will do 30 frames a second....I will try 
> and see if it will detect something on the order of a mag 4 star....I know 
> that CCD imagers will integrate to mag 13, but for occultation timing it 
> would have to integrate at 1/10 sec speeds....can they do that, can the 
> software do that?  And will
> software let you do image processing and record time?
>
> Interesting issues....the IOTA scheme lets you record 30 frames a second 
> with a time hack on the tape or disk or whatever...a simple solution if 
> you are willing to buy the camera (super sensitive) and a recorder....I 
> just don't want to spend a $160 for a camera I might use once.

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