NPF Rule Calculator

A useful Astrophotography application to find the ideal exposure time, correcting for planetary shift.

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Table of Contents

1. Built With
2. To-Do
3. Getting Started
   • Prerequisites
   • Installation
4. Usage
5. Contributing
6. License
7. Contact

Built With

• ConfigParser 4.1
• PathLib

To-Do

• Make the calculation work
• Unit Test
• Pull from config file
• Allow selection of pixel_pitch states
• Incorporate Pathlib

Getting Started

• To get a local copy up and running follow these simple steps.

Prerequisites

• Python > 3.8.5 64-bit (Other versions not tested - YMMV)
• ConfigParser > 4.1
• PathLib

Installation

1. Clone the repo

   git clone https://github.com/AxiomYT/NPF-Rule-Calculator-Python.git

2. Execute with Python3

   python ./astrophotography.py

Usage

Configuration

• Before using this programme - you absolutely must edit the [Specific Camera Variables] and [Pixel Pitch] entries in the config.cfg file.

Value Map

    # F/Stop No. (Stops)
    APERTURE = 5.6

    # Millimetres (mm)
    FOCAL_LENGTH = 300

• APERTURE > Has to be a Float.
• FOCAL_LENGTH > Has to be an Int.

    PIXEL_PITCH = 6.423611111111111
    PIXEL_PITCH = 

    PIXEL_WIDTH = 
    PIXEL_WIDTH = 3456
    
    PHYSICAL_WIDTH = 
    PHYSICAL_WIDTH = 22.2

• PIXEL_PITCH > Has to be a Float.
• PIXEL_WIDTH > Has to be an Int.
• PHYSICAL_WIDTH > Has to be a Float.

Pixel Pitch Differentiation

Know Pixel Pitch

   PIXEL_PITCH = 6.423611111111111

   PIXEL_WIDTH = 
   PHYSICAL_WIDTH = 

Don't Know Pixel Pitch

   PIXEL_PITCH = 

   PIXEL_WIDTH = 3456
   PHYSICAL_WIDTH = 22.2

• Essentially - If you enter a manual value for pixel pitch, the programme will use this - and ignore the values for Pixel and Physical Width.

Contributing

1. Fork the Project
2. Create your Feature Branch (git checkout -b feature/AmazingFeature)
3. Commit your Changes (git commit -m 'Add some AmazingFeature')
4. Push to the Branch (git push origin feature/AmazingFeature)
5. Open a Pull Request

License

Distributed under the MIT License. See LICENSE for more information.

Contact

Axiom - @MM7OWO

Project Link: https://github.com/AxiomYT/NPF-Rule-Calculator-Python