[AZ-Observing] Re: Different Astronomy

Hi Stan,

Very nice!

I see you have compensated for the black body roll off or whatever it 
is called. This image looks better than the one you sent me before. 
I'm curious, how much of a Doppler shift is due to the Earth's motion 
around the Sun (worse case)?

Talking to Bob Stencel recently, it seems the Na D lines are also of 
interest for epsilon Aurigae. They have been reported a 1,000 more 
intense than Solar D lines.

I still hope you will help when my Lhires III comes.

Keep up the good work.

Jeff

At 15:54 -0700 05/28/2008, Stan Gorodenski wrote:
>Along with the different kinds of astronomy, photometry etc., is
>spectroscopy. The following link is my first feeble attempts at
>spectroscopy. It is a 10 minute exposure of Epsilon Aurigae taken on the
>evening of April 6-7, 2008. The large drop near the center of the line
>graph is the absorption line of H-Alpha. The spectra has not been
>heliocentric corrected, and it does make a difference not doing so.
>http://users.commspeed.net/stanlep/EA_600sec.jpg
>Stan

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Jeff Hopkins
HPO SOFT
Counting Photons
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Hopkins Phoenix Observatory
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