Jump to content


Transparency and seeing

Recommended Posts

How is transparency measured, officially? "The transparency's like poo tonight" is a trifle subjective. So, how do you communicate transparency in a way that is meaningful to other observers?

Similarly, is there a measure for seeing?

Link to comment
Share on other sites

The Antoniadi scale for measuring seeing

1 perfect seeing,

2 slight undulations

3 moderate seeing

4 poor seeing

5 very bad seeing

Theres also the Pickering scale which is the same idea but (10-1 ie the other "away around")

Transparency is measured in NELM - Naked Eye Limiting Magnitude (at zenith) which is self explanatory. :lol:

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.