[Aavso-photometry] ASAS182612 Campaign & CIs of Comparisons

[Michael Sallman]

Arne,

Is there a preferred way to deal with these "ghost images"? Maybe take a
couple of darks after a saturated image?

Thanks,
Mike SVI

arne wrote:
> Most
> front-illuminated CCDs will also show ghost images (called residual
> bulk image) if you saturate a star while observing unfiltered or with
> a red filter, and the ghost image will hang around for several subsequent
> images.  If you changed fields, or did a GEM flip, the residual image
> might affect an important star.  So be careful, think ahead, but don't
> be afraid of saturating a field star.
> Arne