Re: celestial equator display

Lawrence Harris Dec 4, 2002

> Date: Tue, 03 Dec 2002 21:50:10 -0500
> From: Bill J Gray <pluto@...>
>Subject: Celestial equator/wheel-mouse zoom
>
> Lawrence, I'm not so much surprised that the celestial equator
>went away as that you had it in the first place. Guide will show
>an horizon, galactic equator, and ecliptic... but not a celestial
>equator.

Hello Bill

Now you have me puzzled. I went to use the celestial equator to locate
the position of a 'Sky' geostationary satellite - positioned at 28 deg
east, to see whether it was accessible where I live. From what you say,
I never did have it - so what do I remember? The ecliptic is totally
different.

Maybe I'll edit as below.

Thanks - Lawrence

>
> It just occurred to me, though, that if one _did_ want a
>celestial equator, it could be done by editing 'startup.mar'
>and looking for the line starting with:
>
>25 Marking 7...
>
> This is the line containing settings for the galactic equator
>display. Change it to read:
>
>25 Marking 5 1 5 0...
>
> (dots indicating "don't change anything after that point"), and
>Guide will show the celestial equator. Right-click on it, and you'll
>see that Guide still "thinks" of it as the galactic equator and you can
>adjust its color and turn it on or off.
>
> Downside to this is that you can no longer display the galactic equator.
>But most people are probably not too interested in this anyway. (Of course,
>the other downside is that it is only documented, in a highly oblique
>manner, at
>
>http://www.projectpluto.com/mar_fmt.htm#markings
>
> I doubt if any but the most fanatic of Guide users would know about it!)
>