Hi All,

Here are two drawings, one with a 18" from Atacama, the second with my 25" Obsession from southern Alps.
The first, of course, under pristine sky, the second under a rather good one.
Report here: http://www.deepsky-drawings.com/ngc-2440/dsdlang/fr

Clear skies
Bertrand
http://www.deepsky-drawings.com/


NGC-2440-T450-vs-T635-BL-1.jpg