Simply lock the Dec. and move back and forth in RA around the value you started with. Keep doing this until you find the object or move more than 5 degrees in both directions from the original Dec. setting. This method can be very quick, but it can also be very frustrating if you do not take the time to polar align reasonably well. Look at 8 to 10 of these stars, choosing a variety of spectral types. In your observing notes, remember to comment on the color of each star and see if you can relate the color and the spectral types of stars.
Separation refers to the angular distance between the pair, in units of seconds of arc.
You should be able to estimate the separation in your field of view, since you should be comfortable by now with the angular field of view of your 25 mm and 10 mm eyepieces. Magnitude is the apparent magnitude of the two members of the binary, at visual wavelengths. Name of Primary Constellation RA Dec Position Angle Separation Visual Mag. It is the closer pair that is given here. 11 Unusual Triple system.