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Observatory Parameters
Nov 22
Ashburn
Clouds: Seeing:
Waxing Crescent
10:18 20:21
Astronomy Planning Made Easy

What's in Reston's Sky Tonight?

  • Planets
  • Asterismsby: magnitude size rise transit
  • Dark Nebulaeby: magnitude size rise transit
  • Diffuse Nebulaeby: magnitude size rise transit
  • Galaxiesby: magnitude size rise transit
  • Galaxy Clustersby: magnitude size rise transit
  • Globular Clustersby: magnitude size rise transit
  • Nebulaeby: magnitude size rise transit
  • Open Clustersby: magnitude size rise transit
  • Planetary Nebulaeby: magnitude size rise transit
  • Supernovaeby: magnitude size rise transit
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    What Users Think
    This continues to be the best resource of its type, now become essential for me for researching and choosing imaging targets. It means a lot less wasted time than there was. It's hard to think of any way in which this app can be improved, it does so much and so well.
    James, England
    I just started using the DSO Browser and I am impressed. This is an original idea put to work on an outstanding platform. I find it very useful to plan observations and photo sessions. The hourly elevation and the monthly elevation graphs are awesome and helpful. I plan to use it on a regular basis.
    Federico, Venezuela
    Amazing work! What a helpful tool for planning observing sessions. Absolutely wonderful.
    Nick, United States
    I love the site! It is my favorite “go-to” for session list generation and looking for DSO info.
    Andrey, United States
    Very great job with your website, I'm using it constantly since I found it! It's really that good, thank you!
    Sergio, Israel
    Thanks for implementing the “Telescope Simulator”. Superb feature!
    Paul, England
    I think this site is a god send. I use it all the time for planning what I am going to image.
    James, England
    Thank you for creating this wonderful site, it is my favorite and I always use it. I've been to a lot of astronomical websites and so far this is the best one I've seen.
    Brandon, United States
    I've been using this for a while now and it's an amazing and educational venture! I urge any and all finding this to join in. Two things I look for on the net: beautifully done and free-of-charge. The DSO Browser passes this test with (truly) flying-colors!
    Dave, United States

    Astronomy Articles

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    Could Magnetic Sails Slow an Interstellar Spacecraft Enough?

    A new study by Professor Claudius Gros - who proposed The Genesis Project - indicates how magnetic sails could be used to brake an interstellar mission. The post Could Magnetic Sails Slow an Interstellar Spacecraft Enough? appeared first on Universe Today.
    · Space.com

    Tiny Slowdown in Earth's Rotation Could Unleash Major Earthquakes

    The slowdown in Earth's rotation could trigger more earthquakes next year, new research suggests.
    · Space.com

    NASA Agreement Sign of Stratolaunch Engine Development Program

    An agreement to do engine testing at a NASA center is the latest sign that Stratolaunch is considering developing its own launch vehicle for its giant aircraft.
    · Universe Today

    Book Review: Cosmology for the Curious

    What will Curious George grow up to be? Being curious, then George will ask a lot of questions. And if lucky then physics will be George’s destiny, for physics seems to have so many answers. From the biggest to the smallest, that’s its purview. And for Delia Perlov and Alex Vilenkin...
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    A Van Gogh Jupiter: Planet's Clouds Swirl Like a Painting

    NASA's Juno spacecraft captured an amazing view of a monstrous Jupiter storm that resembles the swirling pastel clouds of a Vincent van Gogh painting.
    · Space.com

    Image of the Day

    Before NASA's Cassini spacecraft plummeted into Saturn this year, it took this final photo of Rhea, the second-largest moon orbiting the ringed planet.
    · Space.com

    James Webb: Early NASA Visionary

    James E. Webb was an early NASA administrator who saw beyond the politics of the space race and established a firm foundation for the space agency based on science and exploration.

    Astronomy Quote of the Day

    “The Cosmos is all that is or ever was or ever will be. Our feeblest contemplations of the Cosmos stir us — there is a tingling in the spine, a catch in the voice, a faint sensation, as if a distant memory, or falling from a height. We know we are approaching the greatest of mysteries.” Carl Sagan
    Astronomy Planning Made Easy. Learn more.