[Aavso-photometry] exoplanet observing

[pcyoung]

What is a c filter?
Comet? Swan band , c2?

Sent from my iPhone

On Jun 24, 2009, at 1:40 PM, "Michel Bonnardeau" <arzelier1 at free.fr>  
wrote:

> I observed CoRoT-1b with a LX200 8" and an ST7 and a c filter. The  
> star is mag 13.3 and the transit 30mmag deep:
> http://www.astromb.net
> I also observed WASP-2b (under poor skies).
>
> Michel
>
>
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