DaleDellutri.com
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Site Index

Amateur Astronomy

Welcome

Welcome to the home page of my amateur astronomy services. I hope you find something here that's useful.

Learn the Zodiac (Ecliptic Constellations)!

This is a script and all the diagrams you'll need to present a talk about the zodiac and the ecliptic constellations. It can also be used for self-education.

Solar System Ephemeris

A solar system ephemeris is a list of solar system objects — the Sun, Moon, and the planets — and their positions in the sky as seen from a certain place at a certain time.

There are two explanatory pages:

• Explanation of the Solar System Ephemeris
• Explanation of the Solar System Ephemeris request form

Planetary & Lunar Elongation Calendar

A planetary and lunar elongation calendar is a chart which shows the elongation (angular distance) of the Moon and planets from the Sun for each day of a year. Specifically, it shows the angular distance and direction from the Sun of the naked-eye planets (Mercury, Venus, Mars, Jupiter and Saturn) and the Moon. It provides a quick and easy way to determine the visibility of these celestial objects.

There are two explanatory pages:

• Explanation of the Planetary and Lunar Elongation Calendar
• Explanation of the Planetary and Lunar Elongation Calendar request form

An Astronomical Statement in The DaVinci Code

This is an analysis of the following astronomical statement in The DaVinci Code:

"... Venus traced a perfect pentacle across the ecliptic sky every eight years."

There is a subsidiary page describing the synodic period of Venus:

• The Synodic Period of Venus

Star Magnitudes and Counting the Stars in the Sky

Information about the brightest stars in the sky and how many stars there are in each brightness category.

Constellation Information

Information about the constellations.

Astronomy bookmarks

My astronomy bookmarks.

Northwest Suburban Astronomers

I'm a member of the Northwest Suburban Astronomers, a club devoted to amateur astronomy.

Web site comments, criticisms and complaints: E-mail: Dale Dellutri .
Copyright 2020 Dale A. Dellutri
Last modified: Tuesday, 19-May-2026 08:43:19 EDT