A Resource for Amateur Astronomers

N S   E W  

    Lynds' Bright Nebulae
    Lynds' Dark Nebulae


    Eclipsing Binaries
    Cataclysmic Variables
    Lunar Occultations (Experimental)


             Show Objects Without Magnitudes         Table Legend Below 30° 30° - 40° 40° - 50° 50° - 60° Above 60°   The darker the box, the higher the elevation and the easier to photograph


Unless you live on a wide-open expanse of flat land, you probably have trees, hills, buildings, or other things obscuring at least part of the sky. Even if you have a clear 3600 view , the lower you look the more artifical lighting and atmospheric absorption limits what you can see or capture through a telescope or camera.

If you live away from urban areas and have a clear view of the horizon, then you generally want to be above 15°. If you are near an urban area with a lot of lights, then you want to be above 30°. If you have trees, hills, or buildings, then you may only be able to see objects above 40-60°, depending on what the obstacles are, how high they are, and how far away you are from them.

The visibility tables show what is visible for your location, and when, in a simple gray-scale format. The time from sunset to sunrise is divided into 1-hour intervals, and the average position of all objects in the catalogs is calculated for each period; the darker the interval, the higher the object. Objects that do not average higher than 300 are not shown, except for the moon. Even when the moon is low in the sky it can adversely affect seeing conditions.

You can advance by days or months to help plan your observation campaign for a given week or season. For example, if M1, The Crab Nebula, is not high enough until 4 in the morning, but next month will be high enough at 1, then you can decide when you want to to view it (stay up late or get up early).

You can limit the magnitude of objects shown in the table, which can be useful depending on your location and equipment. Some objects in the catalogs do not have assigned magnitudes, and you have the option to either hide or display them. If you are not sure which to choose, experiment and decide what works best for you.

We use data from different sources, and therefore what data is shown may vary between tables.

We do not collect, nor do we desire any of your personal information. We do not require you to sign up for anything. You will not be accousted with popup ads or animated graphics. It is our wish that you use this site to help you explore this infinite and amazing universe.

The only cookies we use are for storing your entries (latitude, longitude, magnitude limit) so that you do not need to enter this data each time you visit this site. These cookies are stored on your computer and are not collected or used by us or any 3rd party in any way.