[Aavso-photometry] Where do the professionals source

[Michael Koppelman]

Two comments on this:

1. I've had these filters for probably 3 years. I inspected them this  
last winter and didn't notice anything odd.

2. Are you sure that this situation would create uncertainties  
greater than one would calculate from the data? I noticed this in  
large part because of higher than expected uncertainties.

Michael


On Sep 27, 2005, at 4:21 PM, Stan Walker wrote:

> The idea of throwing a set away each year is alarming in that the  
> degradation must affect all measures during that year.