Simplify helper a bit
Simplify helper a bit

lpsinger/astropy,larrybradley/astropy,lpsinger/astropy,mhvk/astropy,larrybradley/astropy,pllim/astropy,astropy/astropy,pllim/astropy,larrybradley/astropy,astropy/astropy,mhvk/astropy,astropy/astropy,mhvk/astropy,mhvk/astropy,larrybradley/astropy,pllim/astropy,mhvk/astropy,astropy/astropy,pllim/astropy,larrybradley/astropy,pllim/astropy,lpsinger/astropy,lpsinger/astropy,astropy/astropy,lpsinger/astropy