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SkyandTelescope.com March 2014 33

CCA-250 Corrected Cassegrain

TAKAHASHI

ain

Texas Nautical Repair, Inc., 1925A Richmond Avenue, Houston, Texas 77098

Phone: 713-529-3551 • Fax: 713-529-3108 • http://www.takahashiamerica.com

New stand-alone

GoTo controller

for our Temma

mounts.

See website

for details.

Our 250-mm ƒ/5 CCA-250 is an astrograph with no engineering,

materials, or manufacturing compromises. Its 3-element

corrector produces a flat imaging circle 88 mm across and

star diameters smaller than 10 microns (stars are smaller

than 6 microns within a 50 mm imaging circle). An integrated

temperature-compensating system maintains perfect focus

during temperature variances.

Visit our website to discover additional features

)Superior Takahashi optics and mechanics

) Automatic fans maintain ambient temperature

) Illuminates large chip with pinpoint stars across flat field

) Active-focus system is ASCOM compliant

) Carbon-fiber tube with temperature-compensated

secondary-mirror mount

) Native ƒ/5 optics – optional ƒ/3.6 reducer

and ƒ/7.5 extender

Interested in learning more about the Universe?

Study options range from individual courses through to Masters and Doctoral research,

or you can combine astronomy with other online studies. USQ’s astronomy programs are

supported by a modern remote-access observatory and advanced computing facilities.

PROGRAMS

• Single courses • Master of Science (Astronomy)


• Bachelor of Science • Master of Science (Research)


• Graduate Certificate in Science • Doctor of Philosophy

SKY Ads.indd 33 12/24/13 9:18 AM