----- Original Message ---- > From: luzius.thuerlemann <[email protected]> > > Hi John > > You write that the chart must be in Alt-Az to be able to show the local > horizon.
Yes. The display has two modes, either alt-az (zenith is up, and either alt-az or eq grid or both can be displayed, and the horizon is shown) or equatorial (celestial north is up, and only the eq grid can be displayed, and the horizon is not shown). Patrick used various names for these modes, but click the icon with the two curved blue arrows, normally in the middle of the right toolbar. > I now tried to alter the Alt-numbers in the horizon_Geneve-file and saved it > under another file-name...so the Geneve-file isn't overwritten. But for some > reason, neither my own trial-horizon nor the Geneve-horizon is displayed on > the > chart. > Also, I can only display the Equatorial grid but not the Azimutal one, > although > both are activated under "lines". That means the chart is in eq display mode. You need to switch to alt-az mode. -John > About my trial-horizon-file: starting Azimut is 0, ending one 359. > > Thanks > > Luzius > > > > --- In [email protected], John Mahony wrote: > > > > That looks like the same format as for v2.76. It's a text file with the > alt-az numbers. See the help file. > > > > But even without this, there is a "default" horizon at alt=0, when you have > CdC set to show an alt-az view. So this much should work even without making > your own horizon file. This (or a custom horizon, if you make your own file) > will only show in alt-az display mode. > > > > In the "chart appearance" window, check the horizon details shown at the > bottom. The "invisible" checkbox doesn't mean what it sounds like. It makes > the sky (below the horizon) invisible, so you just see the (normally) green > ground below alt=0. But if you uncheck it, it makes the ground > semi-transparent, so you can see stars through the colored ground. > > > > -John > > > > > > > > > > ----- Original Message ---- > > > From: Graham > > > To: [email protected] > > > Sent: Wed, December 23, 2009 7:03:26 AM > > > Subject: Re: [skychart-discussion] local horizon creation > > > > > > Hi Luziuz, > > > I managed to do it in version 3 not sure about 2.76c, it like doing a > > > html > image > > > map, below is the part from the help file, the contents of my horizon > > > file > is > > > this: > > > > > > # Horizon description file for Carte du Ciel > > > # > > > # File format : > > > # Azimuth(integer) Altitude > > > # > > > # Be sure to begin at the North horizon (azimuth 0) > > > # Intermediate missing value are interpolated > > > > > > 0 25 > > > 5 24 > > > 10 20 > > > 15 16 > > > 20 15 > > > 25 20 > > > 30 15 > > > 35 10 > > > 40 24 > > > 45 24 > > > 50 24 > > > 55 24 > > > 60 24 > > > 65 24 > > > 70 19 > > > 75 5 > > > 80 7 > > > 85 5 > > > 90 15 > > > 95 15 > > > 100 10 > > > 105 10 > > > 110 8 > > > 115 8 > > > 120 8 > > > 125 10 > > > 130 50 > > > 135 50 > > > 140 50 > > > 145 50 > > > 150 55 > > > 155 60 > > > 160 80 > > > 165 80 > > > 170 80 > > > 175 80 > > > 180 80 > > > 185 80 > > > 190 80 > > > 195 80 > > > 200 80 > > > 205 80 > > > 210 80 > > > 215 80 > > > 220 80 > > > 225 80 > > > 230 80 > > > 235 80 > > > 240 80 > > > 245 80 > > > 250 80 > > > 255 80 > > > 260 80 > > > 265 80 > > > 270 70 > > > 275 64 > > > 280 55 > > > 285 45 > > > 290 45 > > > 295 45 > > > 300 35 > > > 305 40 > > > 310 40 > > > 315 34 > > > 320 30 > > > 325 35 > > > 330 35 > > > 335 35 > > > 340 30 > > > 345 30 > > > 350 27 > > > 355 27 > > > The first number is how many degrees to the right you are looking and the > second > > > figure is how many degrees up do you have to look to clear your > > > obstruction, > > > > hope that makes sense, its a handy tool, saves you going out to see > something > > > that is behind a building or mountain in your way! > > > > > > Graham > > > > > > > > > "Write your own horizon file > > > You can write a file with a simple ASCII-editor like Wordpad or Vi to > > > define > > > > your local horizon. As an example, you can open the file [installation > > > directory]/data/horizon/horizon_Geneve.txt. As you can see from the file, > the > > > horizon is defined by a serie of records. Every line contains a pair of > > > two > > > values. The first value is the ‘azimuth’, the second is the > ‘altitude’. The > > > units are degrees, where azimuth 0° is North and 90° is the Zenith. A > > > dot > (.) > > > can be used as a decimal separator. You can put comment in your horizon > > > file > by > > > lines that start with a mesh (#) character." > > > > > > > > > > > > > > > ________________________________ > > > From: luzius.thuerlemann > > > To: [email protected] > > > Sent: Wed, 23 December, 2009 11:33:44 > > > Subject: [skychart-discussion] local horizon creation > > > > > > > > > Hi there, > > > > > > I'd like to create my own local horizon visible from my home with > > > mountains > and > > > valleys. Version 2.76c . Is that possible? I'd be happy also with a > > > simple > > > horizon line just that I see where my horizon lies. > > > > > > Thanks and CS > > > > > > Luzius > > > > > > > > > > > > > > > Send instant messages to your online friends > > > http://uk.messenger.yahoo.com > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > ------------------------------------ > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > ------------------------------------ > > Yahoo! Groups Links > > >
