[AZ-Observing] Re: What's this? Somebody took photos of the transit?

  • From: Tom Polakis <tpolakis@xxxxxxx>
  • To: az-observing@xxxxxxxxxxxxx
  • Date: Wed, 6 Jun 2012 13:11:37 -0400

---- Dan Heim <dan@xxxxxxxxxxxxx> wrote: 
> No black drop. Did anyone see it?

Dan,

The black drop is a sign of bad optics, poor conditions, too-small image scale, 
or all of the above.  When the Swedish Solar Telescope showed no black drop in 
the 2004 transit, that was the end of the discussion.  Seeing no black drop is 
a good thing!

Tom
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