I have found what is all but certain to be a bug, but I'm not sure how I managed to get it.<br><br>In one of my plan files, the Sky Tab NELM contours should a NELM maximum of 7.83, which is probably a bit high for just about anywhere :). It popped up as I was playing around with setting the NELM (mag/sq.arcsec) of my site. However, I can't at the moment reproduce it from a new plan. I'm happy to send the plan in if that would be helpful.<br>
<br>I have also noticed that the Sky Tab magnitudes do not appear to respect the Bortle setting on the site settings. I manually set the mag/sq.arcsec to 20.5 as an estimate of my best NELM of 5.7 (this was somehow what caused the above, I think). However, the maximum NELM in the contour plot is 6.32 (when I set the date to around the new moon after astronomical twilight -- plot is nicely symmetric). Even if I reset my Bortle to a super-dark site and restart the program and/or create a new plan, I get the same behavior. I just confirmed that this doesn't change if I set my site to Inner City skies and reopen the program and start a new plan.<br>
<br>The contour plot looks like it is refreshing (I see the swirl on the lower right side) whenever I change that value, but the plot doesn't change. It does change sensibly when I change the date (based on presence of sun and/or moon).<br>
<br>Is there a behavior I'm missing? Shouldn't the NELM contour respect the site?<br><br>BTW, VERY cool feature.<br><br>Sean McGivern<br><br>