motorised rotators are they worth it

[gilesco]

7 minutes ago, Ouroboros said:

Yes, that makes sense. As do the last few posts. I had refractors in mind specifically and for which the sensor should be centred.  
I suppose I’m thinking about a situation in which you forgot or weren’t able to take flats at the time. You might at a pinch get away with ones taken earlier or later. Better than nowt anyway.  

While it doesn't account for dust, some software has methods and algorithms for creating artificial flats, APP has a method for this, it is supposed to help with Vignetting.

So far, flats have been detrimental to my results, so have been working with just Darks.

But I agree, flats are a real pain, certainly if you don't have a permanent setup, and especially when you're in the situation we're in right now, where it seems to have been at least a month since we had any imaging time (here in the UK).