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Observatory Parameters
Apr 21
Lat. 39.1, Lon. -77.6
Clouds: Seeing:
Waxing Crescent
11:05 01:00
Astronomy Planning Made Easy

What's in your location'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
  • Astrophotography Community
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    What Users Think
    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
    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 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
    Amazing work! What a helpful tool for planning observing sessions. Absolutely wonderful.
    Nick, United States
    Thanks for implementing the “Telescope Simulator”. Superb feature!
    Paul, England
    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
    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

    Astronomy Articles

    · Universe Today

    Did You Know the Earth Has a Second Magnetic Field? Its Oceans

    The ESA's Swarm satellites recently began monitoring Earth's oceans to determine how they contribute to Earth's magnetic field The post Did You Know the Earth Has a Second Magnetic Field? Its Oceans appeared first on Universe Today.
    · Space.com

    Delta IV Heavy: Powerful Launch Vehicle

    The Delta IV Heavy is a variant of the Delta IV line, and is one of the world's most powerful operational launch vehicles.
    · Space.com

    Bankrupt Spaceflight Company's Assets to Help Young Minds Soar

    Before it went bankrupt last year, XCOR Aerospace aimed to fly tourists to space with the company's Lynx suborbital vehicle. But now, XCOR's assets will help give high school and college students hands-on experience with rockets and space technology.
    · Space.com

    New Shepard: Rocket for Space Tourism

    New Shepard is a rocket manufactured by Blue Origin for space tourism. It is designed to take up to six passengers into suborbital space inside of a crew capsule.
    · Space.com

    Image of the Day

    NASA's Juno spacecraft captured this closeup of Jupiter's Great Red Spot surrounded by turbulent bands of clouds during a close flyby on April 1.
    · Space.com

    On This Day In Space! April 20, 2016: Moon Doesn't Turn Green, Despite Internet Rumors

    On April 20, 2016, the moon did not turn green. The moon has never been green and will probably never turn green, despite what any viral internet memes may tell you. See how it happened in our On This Day in Space video series here.
    · Space.com

    New NASA Chief Jim Bridenstine Faces 'Uphill Climb' After Contentious Confirmation

    Jim Bridenstine shouldn't necessarily expect smooth sailing now that he's finally in as NASA administrator, experts say.
    · Space.com

    To Seek Out New Life: How the TESS Mission Will Accelerate the Hunt for Livable Alien Worlds (Kavli Roundtable)

    The just-launched Transiting Exoplanet Survey Satellite (TESS) could soon provide the breakthrough identification of dozens of potentially habitable exoplanets right in our cosmic backyard.

    Astronomy Quote of the Day

    “Since I have introduced this term I had always a bad conscience... I cannot help to feel it strongly and I am unable to believe that such an ugly thing should be realized in nature.” Albert Einstein, regards his objections to a cosmological constant, 1947
    Astronomy Planning Made Easy. Learn more.