(meteorobs) All sky cameras

[Ed Majden]

Larry et all:
	What is your purpose for recording meteors in this magnitude range?   
If your doing meteor flux studies or a program that Sirko Molau heads  
you need to reach fainter magnitudes than these all-sky cameras are  
capable of.  In this case you either have to use a sensitive ccd  
camera with a small field of view or use an image intensifier  
system.  The purpose of the Sandia System as I understand it is to  
detect meteor dropping fireballs.  If there is another purpose, what  
is it?
Ed Majden


On 12-May-09, at 12:15 PM, stange wrote:

> I have to agree with Chris and Thomas.
>
> In the main, the PC164C's are superior to the Sentinel camera in  
> both focus
> crispness and sensitivity by about 1 to 2 magnitudes. I tested both  
> cameras
> with Sentinel software here under my poor Mag 2.5 City light  
> conditions.
>
> Using my Sentinel at a higher software brightness level of 150,  
> (where 128
> is the normal range), I can routinely detect fireballs of mag 0 and
> sometimes mag 1. Basically it will detect fireballs almost as dim  
> as the
> dimmest star that is visible in your starfield if your sensitivity  
> setting
> is close to your threshold setting. Unfortunately getting too close to
> threshold settings cause false triggers from other sources.
>
> So for this station in Yuba City..... mag 0 and is the limiting  
> magnitude.
>
>
> YCSentinel
> (Just got on a temp. dial up line. DSL "maybe" Thurs. night.)
>
>
>
> ----- Original Message -----
> From: "drobnock" <drobnock at penn.com>
> To: <meteorobs at meteorobs.org>
> Sent: 2009/05/12 06:10
> Subject: (meteorobs) All sky cameras
>
>
>> A question to those using all sky cameras to observe fireballs,  
>> what is
>> the visual  limiting magnitude of the camera? And what is the  
>> limit of
>> the meteor or fireball that can be recorded?
>>
>> Also for Thomas Ashcraft, for the VLF/VHF/Visual recording you have
>> presented, what is the limiting visual magnitude of your system?
>>
>> Thank you,
>>
>> George John Drobnock
>>
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