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Re: hor2eq mystery - disagreeing output from same input? [message #66924]

Wed, 17 June 2009 12:15

MichaelT
Messages: 52
Registered: May 2006

Member

Thanks for the very quick fix, Wayne! I just downloaded and tested it
with the expected result.

> It assumed that the Julian date would be
> supplied as a vector with a separate date for each position. (So it
> would loop over the number of Julian dates.) But you are giving a
> scalar Julian date with vector positions, so all positions except the
> first are not being precessed. I have now updated hor2eq.pro to
> recognize your case (http://idlastro.gsfc.nasa.gov/ftp/pro/astro/hor2eq.pro)

OK, I indeed overlooked to provide the julian date as a vector as
well.
I had already noticed that the alt/az grid that I had generated was
somehow shifted with respect of the single values that I found were
correct. So the missing precession nicely explains this observation.

Thanks again!

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[Message index]

		Re: hor2eq mystery - disagreeing output from same input? By: MichaelT on Wed, 17 June 2009 12:15
		Re: hor2eq mystery - disagreeing output from same input? By: wlandsman on Wed, 17 June 2009 08:17
		Re: hor2eq mystery - disagreeing output from same input? By: Jean H. on Wed, 17 June 2009 07:10

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