A personal present
Greaterskies builds a high-quality PDF image file, with the map of the sky as seen from a given place and time. For example, the sky as it was when you met each other.
It is an original and very personal present, and a way to store for ever a memorable event.
Seize the opportunity: Valentine's day, anniversaries, new born babies, weddings, company presents...
Not all days are the same. Neither are their nights.
Some you remember because something special happened. The sky as it was in that moment will be the best present.
Gorgeous and so perfect for a gift! THANK YOU for your great customer service as well! Highly recommend buying from Greater Skies!What our customers are saying
But isn't this like any other star chart?
No it is not. Really. Do take a look at the samples, explore and zoom in. The programs to produce star charts are not even close to this level of detail. Also, Greaterskies posters are beautiful.
Three high-definition charts
You get three high-definition image files, each optimized to be printed at a different size: from large poster to letter.
We'll compute your charts for you as soon as you order them, and you'll be able to download them within seconds.
What a great idea! Print is really neat and special to us on our wedding day. Arrived very quickly, with awesome service and attention to detail. Much appreciated.What our customers are saying
You get to chose the place from which the sky is seen, and the date and time. You can also add a caption, something like The sky as it was seen from Barcelona on that special day (don't worry: we'll generate it for you if you don't want to personalize it). And you can write a personal message, that will be shown below the caption.
All the stars up to magnitude 7 that were visible are plotted, with an approximation of their actual colors and with an area corresponding to their magnitude. This is usually between 7000 and 8000 stars. Planets, moon and sun are also shown, as well as constellations and star names.
"I wrote the program that computes the positions of stars and planets, and that generates the map, in Common Lisp —a programming language invented back in 1958 and that I rather enjoy using—, and the celestial coordinates come from the HYG database. Over the last years I have worked in optimizing the renderization of the map, striving to make it both accurate and beautiful."
For this is not a normal star chart, intended just to show where major stars are located: every tiny dot in your map corresponds to a star that was actually there. The positions are accurate for dates between around 1900 and 2100; we still haven't implemented the extra computation to produce accurate star charts beyond these dates.