Telescope Reviews: RA/ Dec on ETX90 question?

Objects with a positive declination value (Dec +15°, for example) lie above the celestial equator. If a scope (like your ETX) were already aimed at the celestial equator, you'd tilt the objective end of the scope up and the eyepiece end down to locate a target with positive declination. In other words, you'd need to aim higher. Objects with a negative declination value (Dec -15°, for example) would lie below the celestial equator, in which case you'd have to aim lower (tilt the objective end down and the eyepiece end up) to locate the target. If your ETX were mounted on a wedge adjusted for your latitude, the declination would be 0° when the scope is aimed at the celestial equator, and +90° when aimed at the north celestial pole (near Polaris).

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Questar 3.5 standard - pyrex and BB coatings
Powerguide II
8mm, 12mm, 16mm, 24mm and 32mm Brandons
modified Bogen 3030 w/ homebuilt wedge
Homebuilt Galileo scope and very large and ugly homemade tripod
other odds and ends, including iPod Touch with StarMap Pro (what a marvelous combo)...
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"Nothing exists but atoms and empty space. Everything else is opinion."
Titus Lucretius Carus 99-55 B.C.