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Introduction Welcome to Decatur Area Astronomy Club's Double Star Observing Program. The purpose of the Double Star Observing Program is to introduce observers to 100 of the finest double and multiple stars in the heavens. You don't need a large, expensive apochromatic refractor to view the objects on this list since a small refractor, Newtonian reflector, or Schmidt-Cassegrain will do just fine. All objects on this list were observed with a three inch refractor using between 75X and 150X. Again, this program is meant to allow you to enjoy a different aspect of our wonderful hobby, and not to test your equipment. Double star observing can be very forgiving. You don't need the darkest skies, the clearest skies, or even a moonless night to observe many of these objects. Some can be observed from your backyard under moderate light pollution, some can be observed under less than transparent skies, and some can even be observed with the moon up. However, as usual in astronomy, the best results can be obtained under optimum conditions. The point is, always try for the best conditions, but if you don't have them, don't worry about it. You can still enjoy this program. RulesTo qualify for the DAAC's Double Star Certificate, you need only be a member of the Decatur Area Astronomy Club, and observe the 100 selected objects on the included list. Any telescope may be used, but one with an objective 60mm in diameter or larger is recommended. To record your observations, you may use the log sheet provided, or one with similar information. Your observation records must include:
Yes, I said a drawing of the double star. Now, before you panic, how hard is it to draw two dots in the box provided, with the size of the dot indicating magnitude, and the distance between the dots representing separation? You must be a member of Decatur Area Astronomy Club to receive this certificate. These Documents are in Adobe PDF format. If you need a copy of the Adobe Acrobat Reader you may download it by clicking the icon below.
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