The Croydon Astronomical Society
Times of Twilight & Moonrise for 2007 / 9
Updated
7 February 2009
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The Croydon Astronomical SocietyTimes of Twilight & Moonrise for 2007 / 9 |
Updated 7 February 2009 |
To aid you in planning your observations the table
on the links below shows the following times for Kenley Observatory, Surrey.
Sunset & Sunrise
Nautical & Astronomical Twilight
Moonrise / set Time
Moon Phase.
Nautical Twilight is when the Horizon is still visible to allow Sextant readings of the altitude of stars to be taken.
Astronomical Twilight is when the Sun is sufficiently below the Horizon for astronomical observations.
Times are in UTC – add one hour to the times given for Summer Time.
The table is available in in PDF format, this allows you to print out the pages that you are interested in. It is bookmarked every month to enable you to jump quickly to the month you are interested in. It is also available as an Excel file if you wish to extract parts.
Information for tonight is shown below - added 7/2/2009
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Observing times The table on the right gives the times of Sunset & Sunrise for our observatory at Kenley, Surrey. The table also shows the time of moon rise and set and it's phase. This should allow you to plan your observing sessions. Look at the bright objects or the moon while the moon is up and hunt for those faint galaxies and other objects after the moon has set. You should be able to see the brighter objects after Nautical twilight but need to save hunting for the faint objects till after Astronomical Twilight. To see the table you need to have java enabled in your browser. The applet may take a few seconds to load and run before the data appears. Apologies for the layout but it is built into the java applet that has been put into the pubic domain for free.
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Hope you find it useful – Good Observing
If you wish the times for a different location / altitude they can be found using the Calendar Option in Cartes du Ciel (external link).