(meteorobs) Lens question for meteors

[Chris Peterson]

What sky coverage do you want? With a 1/3" sensor, you need a 1.3 mm FL 
lens to get 180° on the long axis.

What is the problem with the 2.1 mm lens that came with the camera?

Chris

*******************************
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com

On 6/13/2014 11:40 AM, Michael Boschat wrote:
> Hi:
>
>
> I have a ZWO Optical ASI120MC ccd camera that came with a 2.1mm wide angle lens. I wish to use a better one for
>
> meteors and they sell one called:
>
>
> CS lens 2.8mm-12mm F1.4              for $39 + courrier from China ship.
>
> on ebay there is 2 types:
>
>
> they are :
>
>
> CS Mount 1/3" 6-15mm F1.4 Zoom Varifocal Iris CCTV Lens
>
>
> and
>
>
> 2.8-10mm CCTV Security Camera Varifocal Lens 1/3" CS Mount F1.4 Manual Iris Wide
>
>
>
> Is there a great difference in sky coverage if I order the less expensive one which is the 6-15mm or would the 2.8-10mm be better to get?
>
>
>
>
> Clear skies
> ----------
> Michael Boschat