Project

telescope-term

0.0
Low commit activity in last 3 years
telescope-termisene/telescopeHomepageDocumentationSource CodeBug TrackerWiki
With this program you can list your telescopes and eyepieces and get a set of calculations done for each scope and for the combination of scope and eyepiece. Easy interface. Run the program, then hit '?' to show the help file. Version 1.0: A full rewrite using the rcurses library (https://github.com/isene/rcurses) - lots of improvements. 1.1: Removed tty startup/exit codes as rcurses now handles that.
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 Popularity
Downloads
18,197
Stars
0
Forks
1
Watchers
2
 Releases
Current version
1.1
Total releases
16
First release
2021-11-08
Latest release
2025-05-14
 Development
Primary Language
Ruby
Licenses
Unlicense
Average date of last 50 commits
2022-05-15
Reverse Dependencies
0

 Dependencies

Runtime

rcurses
~> 3.5
 Project Readme

Telescope

Welcome to Telescope - a terminal/console program for the amateur astronomer.

Note: Version 1.0 is a complete rewrite based on the rcurses library

This application can help structure your telescopes and eyepieces. It will calculate properties of your scopes and EPs. Scope+EP combination properties are also calculated.

The top panel lists your telescopes and the lower panel shows the eyepieces.

Here are the navigation keys and what they do:

Key Meaning
t Add telescope (name,app,fl)
e Add eyepiece (name,fl,afov)
ENTER Edit selected
TAB Switch panels
UP/DOWN Move cursor
Shift-UP Move item up
Shift-DOWN Move item down
HOME/END Jump to start/end
o Toggle order by Telescope APP and Eyepiece FL
SPACE Tag/untag
u Untag all
Ctrl-o Create observation log with tagged equipment
D Delete item
r Refresh all panes
q/Q Quit (save/no save)
? Help

Telescope and eyepiece data is saved in the file '.telescope' in your home directory.

Installation

You can install telescope by simply coloning this repo and put the file telescope in your "bin" directory. Or you can simply do gem install telescope-term.

After installation, fire up the program and press '?' to display the help text.

List of telescope abbreviations

Abbreviation Meaning
APP Apperature (in millimeters)
FL Focal Length (in millimeters)
F/? Focal ratio (FL/APP)
<MAG Maximum magnitude visible
xEYE Light gathering compared to the human eye
MINx Minimum usable magnification (may be lower for refractors)
MAXx Maximum usable magnification
SEP-R Minimum separation, Rayleigh limit
SEP-D Minimum separation, Dawes limit
*FLD Recommended eyepiece for star fields
GLXY Recommended eyepiece for galaxies and nebulae
PLNT Recommended eyepiece for planets and globular clusters
DBL* Recommended eyepiece for planet details and double stars
>2*< Recommended eyepiece for tight double stars
MOON Minimum feature resolved on the Moon (in meters)
SUN Minimum feature resolved on the Sun (in kilometers)

List of eyepiece abbreviations

Abbreviation Meaning
FL Focal Length (in millimeters)
AFOV Apparent Field Of View
MAGX Magnification (with that telescope)
TFOV° True Field Of View (deg/min/sec)
PPL Exit pupil (in millimeters)
2blw Magnification with that telescope and a 2x Barlow lens
tfov True Field Of View with the 2x Barlow lens
ppl Exit pupil with the 2x Barlow lens

Screenshot

Screenshot