Mean value to SQM?

[RCompassi]

Hello!

I'm measuring the Mean value and plotting against an SQM reader, and it happens to be pretty linear (at least in a fixed exposure and gain obviously).

How could I write a value in the frame using the mean to calculate the SQM and translate it to NELM?

Check the graph:

I still need more points, but I will end with a correct formula for it, so how could I do this?

[Alex-developer]

Thats nice work :-) What SQM reader are you using?

Few things

1. If you mean how can you display the values on the allsky image then the next release of AllSky will let you do that
2. I am curious how your are planning to calculate the NELM?

Thanks

Alex

[RCompassi]

Now, how do I limit the value to 2 decimal places?

[EricClaeys]

@RCompassi If you want your red lines on the upper left to be closer together, you can decrease the Line Height in the WebUI. You can also increase your Text X value to move the text to the right.

[Alex-developer]

TO get 2 decimal places change this line

sqmText = "SQM: {}".format(calculatedSQM)

To

sqmText = "SQM: {:.2f}".format(calculatedSQM)

[RCompassi]

Thank you very much!!

[Alex-developer]

No problem :-)