Unihedron

General Category => Connected meters (SQM-LE/LU/LR/DL) => Topic started by: MgcJim on November 01, 2022, 09:34:19 pm

Title: SQM-LU Detection Cutoff Angle
Post by: MgcJim on November 01, 2022, 09:34:19 pm

With the SQM pointed vertically, is there an effective zenith angle cutoff for measurements?  I suspect it does not measure light at a zenith angle of 90 deg.  Perhaps there is a "detection drop off" function?  My concern is the location I want to mount the meter in is not taller than the observatory that is closeby.

thanks
Jim

Title: Re: SQM-LU Detection Cutoff Angle
Post by: admin on November 02, 2022, 12:56:19 am

The following plot shows the response of the meters at various angles.

(http://unihedron.com/projects/darksky/images/fovcurves.jpg)

Title: Re: SQM-LU Detection Cutoff Angle
Post by: MgcJim on November 03, 2022, 01:25:14 am

Excellent.  That's exactly what I was looking for.