Added near meridian constraint

[ramonefoster]

Created NearMeridianContraint, that can be useful for observations using German-Equatorial Mounts, to avoid flipping the side of pier during exposures.

[bmorris3]

Thanks @ramonefoster, this is great!

My only real comment is about the name. When you first read it, it may be a bit ambiguous if this constraint includes or excludes targets are near the meridian.

Could we rename it MeridianSeparationConstraint, and add a max keyword argument? This would make it clear that the constraint sets angular limits relative to the meridian.

[ramonefoster]

Hello, @bmorris3 . Thanks for the suggestion, it was indeed a needed change. I have it fixed.

[codecov]

Codecov Report

❌ Patch coverage is 85.71429% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 73.11%. Comparing base (a4d89a0) to head (d0bf8d4).

Files with missing lines	Patch %	Lines
astroplan/constraints.py	85.71%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #589      +/-   ##
==========================================
+ Coverage   72.90%   73.11%   +0.20%     
==========================================
  Files          14       14              
  Lines        1849     1856       +7     
==========================================
+ Hits         1348     1357       +9     
+ Misses        501      499       -2     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.