Links to Object Catalogs and Information Sources

1) Comets & Asteroids from IAU Minor Planet Center.

2) "Deep Sky Object" definitions and guide from Bill Arnett.

3) Digitized Sky Survey is great for making finder charts:

• Enter object name or coordinates (RA/Dec/Epoch) of desired region of sky.
• Choose height and width of FOV (larger ones take longer to transfer).
• Choose GIF file format (not FITS).
• Hit <Retrieve Image>.

4) SkyView virtual observatory gives you a look at the sky in different wavelengths (Gamma Rays, X-rays, ultraviolet light, infrared light, and radio waves).

5) Professional-level information on celestial objects at SIMBAD astronomical database.