[Aavso-photometry] Mixing filter brands and transformations

[Gerald Bokowy]

I just changed from a manual filter wheel to one that is motorized.

 While doing so I noticed that my V filter has a bad case of crud.

All of my current bvri filters are Schuler.

I am considering getting a custom scientific V filter to replace the
corroded one.

Will mixing this new V filter with the anti reflective coatings and
different thickness, with the remainder of my schuler filters.

cause problems when doing transformations?

I intend to slowly move to all custom scientific filters in time but not
immediately.

 

Do I 

1)      Replace the crud coated schulerV filter with a new one and wait to
buy a full set in the future.

2)      Or slowly convert from schuler to custom scientic as funds are
available one filter at a time

 

Does everyone use a matched set of filters? Does it matter beyond focusing
differences?

My biggest concern is will there be any systematic problems for color
transforms using a mixed set

 

G Bokowy