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Hi Chuck,

    According to TheSky6 Pro, Iota Cancri is Magnitude 4.03. That is a 
pretty bright star. I remember Remi saying that electronic eyepieces were 
more for Lunar and Planetary work. Some of the planets are on the order of 
Magnitude 4.

    On my 8" LX-200, my ST-7XME is supposed to be able to go down to 
Magnitude 13 in 1 second and Magnitude 18 in 1 minute. That is pretty 
sensitive.

    I guess you can go to WWV. I think that there are programs that allow 
you to synchronize to WWV. However, the USNO is the official time keeper for 
the US. You can also get official time accurate to the second from your GPS. 
Windows XP computers automatically synchronize their clocks once a week as 
long as they are connected to the Internet, but can be forced to synchronize 
any time.

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 11:29 AM
Subject: Re: Up-Coming Occultation


> Hi,
> I am not sure the electronic eyepieces are sensitive enough to see Iota 
> Cancri (or what ever it is).
>
> The camera mentioned in the IOTA article is very, very sensitive.  I know 
> my Neximage, and the
>
> vidio camera eyepiece I have won't cut the mustard.
>
> Time,  I think time has to be referenced back to something like WWV or 
> similar to permit syncing up all observations.   So if that can be done 
> via computer, that would be neat.
>
> chuck
>
> Tandy W. Carter Jr. wrote:
>> Hi Chuck,
>>
>>    The accuracy of time/date stamp of the image is dependant on the 
>> accuracy of the computer's clock, not on the camera. So, the computer's 
>> clock has to by synchronized to a feed that gives a standardized time 
>> signal. As for active members that have cameras, I have one, I believe 
>> Howard has one, Scott has two, and I believe Bob O'Connell has Remi's old 
>> electronic eyepiece. There might be other cameras in the Club, but I'm 
>> not sure about them. The electronic eyepiece attached to either a VCR or 
>> a DVR might be a good solution. That way, you can image at 16 fps and 
>> time the occultation to 1/16 second. I just double checked and the 
>> time/date stamp reported by images taken with CCDSoft are reported to 
>> 1/1000 second. So, I guess that's accurate enough to time an occultation. 
>> ;{)
>>
>> 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 10:13 AM
>> Subject: Re: Up-Coming Occultation
>>
>>
>>> Hi Tandy,
>>> Who has the cameras,  and can they be linked to record a accurate enough 
>>> time hack as well?
>>>
>>> Appearently, for the upcoming occultation, time should be within a tenth 
>>> of a second, recorded with the vidio.
>>>
>>> That is neat if the equipment is already on hand.
>>> Chuck
>> =
>>
>>
>
> -- 
> -------------------------
> Chuck  Broward
> WretchedSky Observatory
> Melrose, Florida
> 352-475-1014
> [log in to unmask]
> www.afn.org/~broward
>
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