[Aavso-photometry] RE: Dark-subtracting flat frames

[Tom Richards]

> I have been using a 'rope light' string from Home Depot as a light source
> for
> my flats.  It is on a dimmer and is wrapped in a circle at the end ring of
> my
> RC-16.  The light bounces off of a white screen on the dome and back into
> the
> scope.  The allows me to use low power for IR and R band flats and full
> power
> for those pesky Blue band flats.
> 
> Donn
> 
[TJR] Fascinating idea, Donn. What color and how long is your rope?

Tom Richards