SKIPPYSKY DARK
                         ++++++++++++++

WHAT IS SKIPPYSKY DARK?
========================

Skippysky Dark is a graphical representation showing when the sky is astronomically dark
and therefore most suitable for astrophotography.

The criteria are that the Sun is 18 degrees or more below the horizon, and the Moon, 
regardless of Phase, is 12 degrees or more below the horizon.

You enter your location as Latitude and Longitude (Decimal degrees), as well
as the year, month and day. The TIme Zone offset in hours from UT (GMT)
is also entered.

You may save that locations and TIme Zone information to a defaults file,
so that Skippysky_Dark starts up using that location information,
but using the current year/month/day to start with.

Note to Americans: Your Time Zone offset will be negative, just like your Longitude.


Here is a screen dump of the program :-

www.skippysky.com.au/Skippysky_Dark/Skippysky-Dark_screen.jpg

The (20MB) zip file may be found at :_

www.skippysky.com.au/Skippysky_Dark/Skippysky_Dark.zip

SkippySky Dark is a Windows program.  


INSTALLATION OF SKIPPYSKY DARK?
===============================

SkippySky Dark is NOT installed using the Windows Registry.
There are no cookies or any other tracking devices involved.
To the best of my knowledge there are no viurses or other nasties.
The code does not track who you are, where you are, or communicate with any other
computer or the Internet. It will run quite happily with your computer unplugged
from the 'Net!!

It consists of a stand-alone executable program and some accessory files
that you unzip into a folder of _your_ making on a hard drive.
It does not have to be the C:\ drive or system - any drive will do.

For example : -

C:\SKIPPYSKY_DARK\ 

would be a perfectly good and pertinent folder for you to create.

Just unzip the SkippySky_Dark.zip file into your folder and then run the
skippysky_dark.exe file.

It _is_ that easy ;-)


PROGRAMMING LANGUAGE
====================

Skippysky_Dark is written in Interactive Data Language(IDL) from
www.exelisvis.com . IDL is the language of Astronomy, Medical Imaging and Meteorology.
It was developed in 1977 to support the Mars Mariner missions.


STILL CONFUSED?
===============

Send an email to me at contact_at_skippysky.com.au



Regards,

Andrew Cool
Adelaide, South Australia