Stellarium

Adding the FOV

The field of view for the Seestar S50 is 0.73° x 1.29° 

Sensor

Resolution x: 1920px

Resolution y: 1080px

Chip Width: 5.60 mm

Chip height: 3.20mm

Rotation Angle:  90'

Binning x: 1

Binning y: 1

Telescopes

Name :Seestar S50

Focal Length:  250.00 mm

Diameter:  50.00 mm

Adding a Horizon:

1. Using the Theodolite App:

   • Download and install the Theodolite app from the Apple Store. This app will help you create your horizon data.

2. Log and Email:

   • Copy the log and email it to yourself. Focus on the following two columns:

     • Rename HDG_DEG to AZ (Your Azimuth)

     • Rename VERT to ALT

3. Data Cleaning:

   • Remove all other columns except for AZ and ALT.

   • Rename the lowest AZ value to 0.

   • Remove any duplicate AZ entries or increment by 1 to make them unique.

4. Saving as CSV:

   • Save the cleaned data as a CSV file.

   • Open the CSV file in Notepad and replace all commas (,) with spaces to create a space-delimited file.

   • Remove the column headers AZ and ALT or prepend them with a # to ignore them.

   • Save the file as LocalName_Horizon.hrz.

5. Creating the Folder:

   • Create a folder at C:\Program Files\Stellarium\landscapes\HomePortsmouth.

6. Adding Files:

   • Add your LocalName_Horizon.hrz file to this folder.

   • Copy the landscape.ini file from another folder and amend it as necessary.

7. Final File Structure:

   • Your final file structure should look like this:

C:\Program Files\Stellarium\landscapes\HomePortsmouth\

│

├── LocalName_Horizon.hrz

└── landscape.ini

8.  Your landscape.in file should look like this:

 [landscape]

; Definition file for including a horizon compatible with Carte du Ciel.

name = HomePortsmouth

author = Bob Smith

description = Horizon line of Pompey

type = polygonal

polygonal_horizon_list = LocalName_Horizon.hrz

; in case the measured line was grid-relative only (meridian convergence issue) or had other problems, allow a corrective rotation also here.

; Unfortunately, a horizon with edges at exactly 0 or 180 degrees azimuth causes bad effects. Adding a minimal offset avoids this without causing much trouble.

; Because we can mix photo and polygon in the other classes, use a different name for the polygon rotation:

polygonal_angle_rotatez=0.00001

; Fill color for this landscape. It gets darkened at night

ground_color = .15,.45,.45

; Color for the line. It will not be drawn if this is not defined. This color will not be dimmed at night.

horizon_line_color =  .25,.15,.15

; specify a minimum brightness value 0..1 to have the ground always visible.

minimal_brightness = 0.15

9.  You now go into Stellerium and you will have your new horizon.

Reference:  https://www.youtube.com/watch?v=sq3RovtMggc