"Professor Goddard does not know the relation between action and reaction and the need to have something better than a vacuum against which to react. He seems to lack the basic knowledge ladled out daily in high schools."
--1921 New York Times editorial about Robert Goddard's revolutionary rocket work.

"Correction: It is now definitely established that a rocket can function in a vacuum. The 'Times' regrets the error."
NY Times, July 1969.

— New York Times

M81 first light

By ebfaulkner6a at Thu, 05/14/2009 - 8:25pm
M81 first light

This is a one hour image composite, 60 x 1 min exposures thru the new Astro-Tech 6" Ritchey Chretien telescope mounted on the Vixen GPD.  I expected more but when you go from 3" ED scope to a 6" RC detail needs longer exposures.  However I did an automatic processing in AIP for Windows and then experimented with additional processing manually.  I will need to get 3-5 hours exposure or more to get more detail.  And experiment with AIP. And I used a diagonal which is a boo boo !