observatory
Scisoft 2009.9.1
Scisoft will make you satisfied because it is created to provide a uniform software distribution of astronomical data reduction and analysis software at all of ESO’s observatories. more>> <<less
License:Freeware
Hong Kong Weather Warnings 0.4.3
Hong Kong Weather Warnings is a small yet handy add-on for peoples in Hong Kong SAR. more>>
Hong Kong Weather Warnings 0.4.3 is a small yet handy add-on for peoples in Hong Kong SAR.
It will display current weather information and warnings announced by the Hong Kong Observatory.
After installed this extension, FireFox will visit The Hong Kong Observatory webpage every 5 minutes to retrieve the most update weather information and warnings for Hong Kong.
If any weather warnings is in active, HKWW will display a small icon in the FireFox status bar to notify you about the latest warnings.
All weather information was provided by the Hong Kong Observatory (HKO). Hong Kong Weather Warnings (HKWW) has obtained the authorization from the HKO to reproduce/re-disseminate information obtainable from the HKO's website for NON-COMMERCIAL use
Enhancements: Updated to handle the new data format provided by the Hong Kong Observatory.
<<lessStarry Night 6.3.3
Starry Night revolutionizes the way to increase your in-the-field observing success. more>>
Starry Night 6.3.3 revolutionizes the way to increase your in-the-field observing success.
Use the Events Finder to choose targets, or make your own Observing List for a specific night or for specific objects of interest. Print out three-view starhopping charts customized to your equipment that effortlessly guide you to challenging objects. With extensive data sets, advanced telescope control, and comprehensive observational tools, Starry Night Pro is a powerful program designed for the serious astronomer. Transform your computer into a sophisticated virtual observatory.

Voyager 4.5.5b1
Voyager offers users a versatile, professional math and science program. more>> Voyager 4.5.5b1 offers users a versatile, professional math and science program. Educators and astronomers have recognized Voyager as a powerful learning tool, and it has been adopted by many leading universities world-wide for instruction in astronomy. From mountain top observatories to backyard telescopes, it has become an indispensable tool for exploring the heavens. No other program offers the range of features, the ease of use, and the performance of Voyager 4.5. It is an astronomical adventure which will provide years of wonder and discovery.
Requirements:
- Mac OS X 10.3 or later
- G4 or Intel 1GHz and better
Solar Viewer 1.0
Free Yahoo! NASA widget for your Mac more>> Free Yahoo! NASA widget for your Mac
Solar Viewer is a free Yahoo! widget that features NASAs Solar Viewer that allows you to see todays images of the Sun on your desktop. These near realtime images come from NASA/ESAs SOHO mission, NASA TRACE mission, and the Big Bear Observatory.
System requirements:
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Enhancements
- The Solar Viewer is version 1.0. It has been tested on both the Mac and PC platform.

Hong Kong Weather 1.8
Hong Kong Weather is a highly-efficient, high-quality widget that fetches Hong Kong local weather through local observatory. more>> Hong Kong Weather 1.8 is a highly-efficient, high-quality widget that fetches Hong Kong local weather through local observatory. The Temperature, forecast and weather warning is considerably more accurate than the Weather widget provided by Apple.
Hong Kong Weather displays Traditional Chinese or English location name. Please refer to our website to see more screenshots and detail.
Enhancements:
- Fixed wrong current day and forecast day.
- More resilience for acquiring information in remote site.
- Updated for Leopard
HKWeather 1.8
HKWeather - A widget that fetches Hong Kong local weather through a local observatory more>> HKWeather - A widget that fetches Hong Kong local weather through a local observatory
HKWeather is a lovely dashboard widget that grabs Hong Kong local weather from a local observatory.
Enhancements
- Fixed wrong current day and forecast day.
- More resilience for acquiring information in remote site.
- Updated for Leopard
VolcanoCam 0.8 Beta
VolcanoCam - A view of Mt. St. Helens from the web cam at the Johnson Ridge Observatory. more>> Basic Algebraic Expressions and Algebraic Fractions - AlgeBasics
Algebraic terms, Notations in Algebra, Simplifying Algebraic Expressions, Algebraic Fractions and Indices
Tutorial
Introduces the rules for basic algebra - the multiplication and division of algebraic terms, followed by the concept of addition and subtraction. Teaches the easy way to remove brackets. The methods can be applied to all sums, both easy and complicated ones, unlike some methods which are only suitable for simple sums.
Simple mental exercises at the end of each session help to strengthen the concepts learnt.
It also teaches addition, subtraction, multiplication and division of algebraic fractions and indices.
Practice
AlgeBasics is capable of generating thousands of sums on algebraic expressions, algebraic fractions or indices for drills to ensure that the student masters these very important basic skills in algebra.
Algebraic Expressions
It includes sums on addition and subtraction, multiplication and division, order of calculations, removal of brackets and simple indices such as 2b2 x 5c x 3b.
The sums get progressively more difficult if a student is doing well. If a student is doing badly, the numbers will be kept simple to let him focus on the concepts.
Algebraic Fractions
Includes addition, subtraction, multiplication and division of algebraic fractions. Simplifying algebraic fractions by cancelling and removal of brackets.
Indices
Includes addition, subtraction and multiplication of positive indices and miscellaneous sums requiring a combination of these methods.
Worked Examples
More than 150 worked examples provide help for students who have difficulty in doing the sums.
Reports
You can print out a report at the end of each practice session. The report shows each sum with its correct answer and the students answer marked. It also includes the percentage score, the average time taken to do each sum and other details.<<less

The Beautiful Universe: Chandra X-ray Observatory iPhone Wallpaper 1.0
Download the beautiful high-energy Universe to your iPhone with images from NASA’s Chandra X-ray Observatory. more>> <<less

Sun Spotter 2.5
Sun Spotter is designed to meet all the needs of amateur astronomers and anyone interesting in the Sun. Sun Spotter displays the latest images of the Sun at the SOHO web site. Images can be saved to the Desktop as required. more>> Sun Spotter 2.5 is designed to meet all the needs of amateur astronomers and anyone interesting in the Sun. Sun Spotter displays the latest images of the Sun at the SOHO web site. Images can be saved to the Desktop as required.
Sun Spotter is designed to be quicker and easier to use that visiting the SOHO page directly. Keyboard shortcuts make it easy to toggle between the views, and buttons take you to the relevant web pages to find out more about what youre looking at. Additional links take you to supplementary SOHO pages including the SOHO Classroom.
- Essential overhaul to use the revised SOHO image links.
- Added a simple Moon phase window, care of the US Naval Observatory.
Mt. St. Helens VolcanoCam Widget 2.2.4
This widget displays a static half-size image from the Mount St. Helens webcam, taken from the Johnston Ridge Observatory more>>
The Alert Level is not available on the volcanocam site, but the widget displays both the image and the Alert Level in a single, easy to access place.
As always, the Volcanocam button below the image will take you to the official
website in your default web browser. In the same way, the Alert Level button takes
you to the USGS site for an explanation of the Alert Level.
Enhancements:
- Updated to grab Alert Level from the changed address for that page.
JIKANKEI 1.6.4
JIKANKEI - Japanese time-inspired artwork more>>
JIKANKEI does not express scientific accurate data. It is just an Art work. Linger in the morning brightness, in the afternoon glow, and enjoy the gradually changing seasons on this globe. The author makes no warranties to your physical and/or mental damages.
JIKANKEI displays angles of the SUN and local times of cities and places on the Earth. Sunrise and sunset data are taken from US Naval Observatory Date Services through Internet.
The latest version shows Sun directions and FUJYO JIHOU (gradually changing time) that is before Westernized Japanese Clock System. FUJYO JIHOU divides daytime to six equal periods which an angular unit to 30 degrees is measured along the celestial equator.
When it is equinox one of periods is almost two hours. However It is changed by seasons, summer time is longer and winter time is shorter. The each divided points were named to the 6 directions of zodiac symbols in day time and the 6 directions of symbols in evening, such as U (rabbit, sunrise: six gongs), TATSU (dragon, about two hours form sunrise: five gongs), MI (snake, about four hours from sunrise: four gongs), and so on.
JIKANKEI also shows one twelfth of daytime and one twelfth of evening time for the understanding of differences between twenty fourth even divided modern clock system.
Enhancements:
- Added: Time signal of SUN Music.
- Fixed: When JIKANKEI was started up, a default place name did not show correctly.
AstroAirmass 1.6
AstroAirmass makes airmass plots more>>
Resolve an object name through SIMBAD or put coordinates, choose an observatory and a date, and go!
If you have the Python module biggles installed, you can save the plot and open it with Preview.
Drop me a mail to add your plotting script (e.g. in Perl).
AstroObservability 1.5
AstroObservability - Provide the observability of an object for a given location over a specified date range more>>
Looks for the observability of an astronomical object over a specified range of dates, at a given location (astronomical observatories).
More than 52 important professional observatories. Observatories are added on request.
AstroTimes 2.1
AstroTimes - Current Universal Time, the Local Sidereal Time, the current Julian Date and the current Modified Julian Date more>>
Since the Local Sidereal Time depends on the longitude, a list of some important astronomical observatories is provided on the back.
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