Choosing when and where to observe is hard. It's a pain to take out your telescope and then having to put it away when clouds quickly roll in.
Well, now you don't have to. With iCSC on your iPhone, you can easily search around for the best location, using Clear Sky Charts published by Attilla Danko.
The Clear Sky Chart, invented and maintained by Attilla Danko, shows at a glance when, in the next 48 hours, one might expect clear and dark skies for a specific observing site.
There are over 4600 charts available for North America, with data provided by Allan Rahill of the Canadian Meteorological Center. These charts provide Cloud Cover, Transparency, Seeing, Darkness, Wind, Humidity, and Temperature. Users can also enable a legend to help read the charts.
iCSC allows users to find charts by title, location, or with a map. Users can then save the charts that they use often.
While Clear Sky Charts are targeted at astronomers, anyone who wishes to look into the heavens, or needs a highly accurate sky forecast can benefit from iCSC: Clear Sky Chart Viewer.
Sorry - we let a bug slip through! The issue with favorites has been fixed.
Ratings and Reviews
Great resource to maximize and optimize your star-gazing
I’ve got a handful of local spots saved as favorites so I can quickly check sky conditions, so I know when star gazing will be awesome vs so-so vs “stay inside”.
Really great resource for anyone who likes to view the stars, with or without a telescope.
Crashed on opening a favorite, even after your message says bug is fixed.
Thanks for getting this fixed. It’s back to working great.
Hi there - We're sorry about the issue. It seems that you are still using 1.2.4 (at least based on what I can see while responding to this).
Please update to iCSC version 1.2.5 (which was released yesterday) to fix the crash. Let us know if you have any other issues.
Great app, but there’s no search function? It would be so easy to implement a simple search feature at the top of the full list of observing sites. Please implement this in the next update!
With Family Sharing set up, up to six family members can use this app.