JavaScript Spread Sheets

Angular Separation
Russ Back's Astronomy Calculator
Russ Back's * Astronomy Calculator
Burham Calculator
Calculator
Comet.js
Decimal Calculator
Epoch Converter
Eyepiece Magnification
Facility Predictor*
Length Calculator
Meteor Shower Table
Moon Rise/Set Times*
Our Solar System
Planetary object, User Defined
**Planetary object, User Defined
******Planet Positions - testiranje*
***bolje***Planet Positions - testiranje*
***zelo okrnjeno***Planet Positions - testiranje*
***zelo okrnjeno***Planet Positions - testiranje, ki deluje*
**************Planet Positions - vnesi elemente tira*
Planet Positions*
**Planet Positions*
Planet Positions, Current*
Planet Rise/Set Times*
Right Ascension/Declination <=> Altitude/Azimuth*
Rotating Moon Phases
Strehl Ratio
Sun Rise/Set Times*
John Thorstensen's Sky Calendar*
John Thorstensen's *Sky Calendar*
Wise Observatory Astronomical Calendar*

These are JavaScript spreadsheets. Fill in where "user input" is needed and click the [Calculate] button. Where you are prompted for a date/time, leaving blank fields will default to the current date/time.

* JavaScript sheet uses latitude, longitude, time zone, and other parameters from the customized call to this web site (see [Edit Location] link).

JavaScript Sheet Descriptions

• Angular Separation computes the distance between two stars.
• Russ Back's Astronomy Calculator displays moon phases and planetary statistics. Not part of my collection of JavaScript sheets, but a very nice JavaScript calculator anyway.
• Burham Calculator will convert Right Ascension/Declination coordinates from Burham's handbook to current epochs.
• Calculator is a simple on-line calculator.
• Comet.js This script uses dynamic html to display a single glowing star, orbiting the mouse cursor.
• Decimal Calculator is a simple on-line calculator to convert degrees (hours/minutes/seconds) to either decimal degrees or radians.
• Epoch Converter will let you convert RA/Dec coordinates from one epoch to another.
• Eyepiece Magnification gives you the magnification of the most popular eyepiece sizes for your telescope.
• Facility Predictor This sheet computes the probably that members will be at our observatory/facility tonight.
• Length Calculator is a simple on-line calculator to convert feet to inches, meters, etc.
• Meteor Shower gives the peak days of meteor showers, given the specified year.
• Moon Rise/Set Times gives the moon rise/set times of the specified day.
• Object, User Defined allows you to define a comet or asteroid. This object will then be displayed in either the "planet positions", "planet positions, current" or "planet rise/set times" JavaScript sheets.
• Our Solar System displays common solar system distance figures. A test for JavaScript code.
• Planet Positions gives the planet's position for the given date/time.
• Planet Positions, Current gives the planet's current positions.
• Planet Rise/Set Times gives the planet's rise/transit/set times for the given date/time.
• RA/Dec <=> Al/Az will convert Right Ascension/Declination coordinates to/from Azimuth/Altitude coordinates.  Displays Local Sideral Time.
• Rotating Moon Phases simply displays available moon images on our web site.
• Strehl Ratio will help you determine the optimum diagonal size for your telescope.
• Sun Rise/Set Times gives the sun rise/set times of the specified day.
• John Thorstensen's Sky Calendar allows you to generate html calendars of sun/moon rise/set times.
• Wise Observatory Astronomical Calendar allows you to generate html calendars of sun/moon rise/set times.

Note: Many formulas had to be converted through two different programming languages. If you find any formula errors, please send an e-mail.

Return to Home

This web site was last updated 08/23/02