horizon_plat.prf

Hardware and software setups, autoguiding and plate solving parameters, etc..
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niklas
Posts: 19
Joined: Sun May 21, 2017 12:09 pm
Location: Stockholm, Sweden

Tue Aug 29, 2017 8:20 am

Hi there!

Is there anyone who knows how to setup the file horizon_plat.prf that is possible to use in sky Chart setup > General diplay > Horizon.
I am setting up a observatory and there is some trees to the north west and north east that i want to map on the sky chart.
I have searched in the help file but its only mentioned as a posibility without any instructions on how to construct the file. If I press "define" it only allows me to select a file.

/Niklas
_____________________________________
Niklas Storck
Hamza Touhami
Site Admin
Posts: 564
Joined: Sat May 20, 2017 6:05 pm
Location: Phoenix,AZ
Contact:

Tue Aug 29, 2017 9:36 am

Niklas

it is rather easy to set up, you can either edit the existing file that Prism points to or create a new one using your notepad program. You need to set up two columns like below:

1) The azimuth in degrees ( 0 being North)
2) The elevation in degrees ( 0 being the horizon)

here is an example:

0 35
5 35
10 40
15 40
20 40
25 50
30 55
35 55
40 55
45 55
50 50
55 45
60 40
65 40
70 45
75 45
80 40
85 40
90 30
95 30
100 35
105 35
110 30
115 25
120 20
130 15
140 15
150 25
160 25
170 25
180 20
190 20
200 15
205 20
210 25
215 26
220 29
225 27
230 27
235 24
240 23
245 33
250 37
255 40
265 40
270 41
275 40
280 70
285 77
290 77
295 77
300 78
321 77
338 77
348 77
358 70


Let me know if you need any further assistance.
Hamza Touhami | Site Administrator
Hyperion-Astronomy.com
niklas
Posts: 19
Joined: Sun May 21, 2017 12:09 pm
Location: Stockholm, Sweden

Wed Aug 30, 2017 3:50 am

That I should be able to do.
I didn't find the file that was pointed otherwise it should have been simple.

Thank You!
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Niklas Storck
Hamza Touhami
Site Admin
Posts: 564
Joined: Sat May 20, 2017 6:05 pm
Location: Phoenix,AZ
Contact:

Wed Aug 30, 2017 10:07 am

Good morning

The .PRF file can be made using Notepad and saved to a location of your choice, i used the the ALT AZ coordinates i provided above to make a file. I am attaching a snapshot of what it looks like on my screen.

Thanks
Attachments
horizon.PNG
Hamza Touhami | Site Administrator
Hyperion-Astronomy.com
niklas
Posts: 19
Joined: Sun May 21, 2017 12:09 pm
Location: Stockholm, Sweden

Wed Aug 30, 2017 1:16 pm

Good evening

Thank You, It worked well

/Niklas
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Niklas Storck
Hamza Touhami
Site Admin
Posts: 564
Joined: Sat May 20, 2017 6:05 pm
Location: Phoenix,AZ
Contact:

Wed Aug 30, 2017 2:02 pm

Hello Niklas

Glad it worked out for you, it a splendid visual aid.

Thanks
Hamza Touhami | Site Administrator
Hyperion-Astronomy.com
rottielover
Posts: 128
Joined: Thu Aug 23, 2018 8:22 pm
Location: Missouri, USA
Contact:

Fri Apr 19, 2019 10:50 am

Oh I'm so glad I found this thread!!! I really need to search harder before posting other threads...

I have a quick question. I have an iphone app called "Observer Pro", one of the features of this app is that you can setup an observing site, then use your phone's camera to follow your local horizon and it builds a file called {SITE}.hzn which you can email to yourself.

The HZN file when opened with notepad looks exactly like what you describe the PRF file to be, except that this program is using 2 decimals. So the data looks like this:

0,16.70
1,16.80
2,16.90
3,35.50
4,40.00
5,42.10
6,43.20
7,44.20
8,43.80
9,43.50
10,43.10
11,42.80
12,42.30
13,41.80
14,42.20
15,42.40
16,42.60
17,43.30
18,43.70
19,44.20
20,44.60
21,44.90
22,44.60
23,44.60
24,44.90
25,44.90


Will this still work if I just change the file extension ?
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