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Observatory Parameters
Dec 17
Lat. 39.0, Lon. -77.5
Clouds: Seeing:
New Moon
06:34 16:44
New Moon:Tomorrow!
Astronomy Planning Made Easy

What's in Ashburn's Sky Tonight?

  • Planets
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  • 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
    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
    Very great job with your website, I'm using it constantly since I found it! It's really that good, thank you!
    Sergio, Israel
    I love the site! It is my favorite “go-to” for session list generation and looking for DSO info.
    Andrey, United States
    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
    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
    I think this site is a god send. I use it all the time for planning what I am going to image.
    James, England

    Astronomy Articles

    · Space.com

    Recycled SpaceX Dragon Capsule Makes 2nd Delivery to Space Station

    A used SpaceX Dragon cargo ship arrived at the International Space Station for the second time Sunday (Dec. 17) delivering more than 2 tons of NASA supplies just in time for Christmas.
    · Space.com

    Russian, Japanese and US Crew Launch to Space Station on Soyuz

    Three crewmates for the International Space Station are now on their way to the complex, where they will begin their six month stay by ringing in the new year.
    · Space.com

    California's Still-Growing Thomas Fire Spews Brown Smoke in NASA Image

    A NASA satellite captured an image showing a thick curtain of brown smoke billowing from the Thomas Fire in Southern California yesterday (Dec. 14).
    · Space.com

    Trekkie Runaway Beams Up to Hollywood in 'Please Stand By' Trailer

    The opening scenes of a new drama sound just like a traditional "Star Trek" episode: "Captain's log, final entry," the narrator says. "Spock and I are the sole survivors."
    · Space.com

    Moon Rocket Thrust! NASA Tests Powerful Engine with 3D-Printed Part

    An engine designed for the world's most powerful rocket underwent one last test fire for 2017 on Wednesday (Dec. 13) to help NASA get ready for the Space Launch System rocket's first flight around the moon.
    · Space.com

    Space Station Double Play Sunday! Watch a New Crew Launch as SpaceX Dragon Arrives

    There's a lot of spaceflight action on tap Sunday morning (Dec. 17), and you can watch it all before the first NFL game of the day kicks off.
    · Space.com

    The Most Amazing Space Photos This Week!

    Here are our picks for the most amazing space photos of the week.
    · Universe Today

    How Long Can a Rocky World Withstand the Blasts From a Red Dwarf Star?

    In a presentation at the Fall Meeting of the American Geological Union, a team of researchers showed how MAVEN data could help determine the habitability of rocky planets around red dwarf stars. The post How Long Can a Rocky World Withstand the Blasts From a Red Dwarf Star? appeared first on...

    Astronomy Quote of the Day

    “Somewhere, something incredible is waiting to be known.” Carl Sagan
    Astronomy Planning Made Easy. Learn more.