Astronomical Accessories

Astronomical AccessoriesAstronomical Accessories

To illuminateTo illuminate

Cartes du CielCartes du Ciel

Cloudy Nights – Andrew JohnsonCloudy Nights – Andrew Johnson

The ways of collimationThe ways of collimation

FindersFinders

Power in the fieldPower in the field

Light Pollution FiltersLight Pollution Filters

Color filtersColor filters

Fringing FiltersFringing Filters

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

Best used on small, well-Best used on small, well-corrected refractorscorrected refractors

Konigs – GRO & UniversityKonigs – GRO & University

Avoidable ocularsAvoidable oculars

2” Kellners in short f. 2” Kellners in short f. ratiosratios

ZoomsZooms

Barlow lensesBarlow lenses

Optical Clean-upOptical Clean-up

Stay AwayStay Away

Star Charts (Free or shareware)Star Charts (Free or shareware) SkyGlobe (download from search engine)SkyGlobe (download from search engine) Cartes du Ciel (download from search engine)Cartes du Ciel (download from search engine) Cloudy Nights – Andrew Johnson Cloudy Nights – Andrew Johnson

http://www.cloudynights.com/item.php?item_id=1052http://www.cloudynights.com/item.php?item_id=1052

Equipment VendorsEquipment Vendors Anacortes Telescope – Anacortes Telescope – www.buytelescopes.comwww.buytelescopes.com Astromart classified – Astromart classified – www.astromart.comwww.astromart.com Gary Russell Optics - Gary Russell Optics - hh

ttp://www.citlink.net/~optics/products.htmlttp://www.citlink.net/~optics/products.html Hands on Optics – Hands on Optics – www.handsonoptics.comwww.handsonoptics.com Oceanside Photo & Telescope - Oceanside Photo & Telescope - www.optcorp.comwww.optcorp.com Orion Telescope – Orion Telescope – www.telescope.comwww.telescope.com Sirius Optics - Sirius Optics - http://www.siriusoptics.com/http://www.siriusoptics.com/