celestial precomputation online with Winfy

We have hosted the application celestial precomputation in order to run this application in our online workstations with Wine or directly.

Quick description about celestial precomputation:

Warning: I found an error if the DR position is on the southern hemisphere. The PUB249 pdf files did not show this error and are correct (as far as I checked). All Revisions 8+ and the Windows release have been fixed.

This Python TK application calculates a good set of stars for a 3 star fix, makes all calculations similar to the FAAs Celestial Computation Sheet (see FAA doc FAA-H-8083-18).

Also, you can create a PDF file that generates Pub 249 Vol 1 for any epoch you specify.

The PUB249 as PDF is found under "Files".

I wrote this for my aircraft bubble octant : -)
It is mainly useful for air navigation as it assumes a bubble sextant but may be used for normal sextants as well.

Requires Ephem and ReportLab (optional for PDF output)

Not to be used for real-world navigation!.

Features:

• Generate Pub 249 PDF file for any epoch you specify
• Calculate 3 Star fix
• Use any star that is in the USNO list of navigational stars
• Full support for sun+moon with upper or lower limb
• Calculates a set of 3 favorable stars with good geometry if fields are left empty

Audience: Education.
User interface: Tk.
Programming Language: Python.

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