[Aavso-photometry] Baseline photometry of HD 74156 at CBA Belgium Observatory - results

[Radu Corlan]

> The resulting light curve depicts - as expected - a nearly flat pattern. The
> level of noise is higher than what I'd like to see, and likely is caused by
> : (1) scintillation because of too short exposure times, (2) a nearby moon,
> (3) poor photometric sky conditions. I reached an overall accuracy of about
> 0.005 mag, which will need to be increased for the next campaign. To further
> improve precision, I will have to stop down aperture of my telescope by
> using a mask with a cutout hole.

Tonny,

one more thing: if you use your camera unbinned, you can generally double 
your exposure: the charge capacity of the binned pixel is about twice that 
of the unbinned pixel, while it' area is four times larger. 

Radu

> 
> Best regards,
> Tonny
> 
> Tonny Vanmunster
> CBA Belgium Observatory
> http://www.cbabelgium.com 
> ________________________________________________________
> PERANSO : The Final Frontier of Period Analysis Software
> http://www.peranso.com
> ________________________________________________________
>  
> 
> 
> _______________________________________________
> Aavso-photometry mailing list
> Aavso-photometry at mira.aavso.org
> http://www.aavso.org/mailman/listinfo/aavso-photometry
> 

-- 

-------------
Radu Corlan       Snail Mail: Bucuresti sect. 1, 
rcorlan at pcnet.ro  str. Argentina nr. 28, Romania

   You can still escape the "Gates" of Hell!   
                 Use Linux!