17 September 2015 at 11:56 am
#577045
![](https://britastro.org/wp-content/uploads/2020/10/picture-16-1603972483-80x80.jpg)
Keymaster
Yes, I always use and record the numbers from the SQM when i’m observing. I have a Unihedron one too. There is also an iPhone app but I don’t know how accurate it is. The app developers said they had difficulty doing an Android version because of the number of varieties of camera in the phones…
Callum