Astronomical Accessories

To illuminate

Cartes du Ciel

Cloudy Nights – Andrew Johnson

The ways of collimation

Finders

Power in the field

Light Pollution Filters

Color filters

Fringing Filters  Absorb much of blue or violet fringing seen in achromatic refractors.

 Best used on small, well corrected refractors

Konigs – GRO & University

Avoidable oculars  2” Kellners in short f. ratios  Zooms

Barlow lenses

Optical Clean-up

Stay Away

Star Charts (Free or shareware)    SkyGlobe (download from search engine) Cartes du Ciel (download from search engine) Cloudy Nights – Andrew Johnson http://www.cloudynights.com/item.php?item_id=1052

Equipment Vendors        Anacortes Telescope – www.buytelescopes.com

Astromart classified – www.astromart.com

Gary Russell Optics http://www.citlink.net/~optics/products.html

Hands on Optics – www.handsonoptics.com

Oceanside Photo & Telescope www.optcorp.com

Orion Telescope – www.telescope.com

Sirius Optics http://www.siriusoptics.com/