Meade Instruments:  
 » LX90 SCT & ACF Series. 
 » LX200 ACF Series. 
 » LXD75 ACF Series. 
 » ETX Computerised Telescopes. 
 » Lightbridge Dobsonian Telescopes. 
 » Premium Refractor Telescopes. Coronado Solar Telescopes: 
 » Personal Solar Telescopes. 
 » SolarMax II Telescopes. Opticstar sections: 
 » Cooled, long exposure cameras, 6.1MP CCD, USB 2.0. 
 » Video cameras for planetary use up to 1.3MP, USB 2.0. 
 » Imaging accessories. 
 » Auto-Guiding systems, complete solutions. Ascension telescopes and accessories: 
 » Apochromat ED Triplet Refractors 
 » Achromat Doublet Refractors  
 » Eyepieces including zoom eyepieces. 
 » Guiding eyepieces. 
 » Extension tubes. 
 » Flip mirrors. 
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 » Binoviewers. 
 » Red dot finders. 
 » Eyepiece projection kits. 
 » Mirror and prism diagonals. Starlight Xpress: 
 » Cooled CCD Cameras. 
 » Guide Cameras. 
 » Filter Wheels. Sky-Watcher: 
 » Equinox Refractor Telescopes PRO series. 
 » Evostar ED PRO Refractor Telescopes. 
 » Skymax PRO Maksutov Cassegrain Telescopes. 
 » Telescopes standard series. Farpoint Astro: 
 » Dovetail systems and mount accessories. 
 » Focus masks. 
 » Binocular mountings. Shoestring Astronomy sections: 
 » Autoguiding connectivity kits and interfaces. 
 » Shutter control units for DSLR cameras. 
 » Focus motor controllers.
Opticstar AZ90 GOTO
Opticstar AZ90 GOTO.
The Opticstar AZ90 GOTO Maksutov is one of the easiest to use entry level computerized telescopes on the market...
FREE: Planetay camera.
Opticstar XL 82° UWA
Opticstar XL 82° UWA Eyepieces.
The Opticstar XL 82° UWA Eyepieces provide the highest optical quality and usability...
Cooled CCD
Opticstar DS-616C XL
The Opticstar DS-616C XL uses the Sony ICX413AQ, 6.1 mega pixel colour CCD (1.8").
Complete with power supply unit and software...
Meade LX90 ACF 10" UHTC
Meade LX90 ACF 10" UHTC.
The Meade LX90 ACF 10 UHTC is a 10" advanced catadioptric with a computerised fork mount.
Skyliner-300P FT SynScan
Sky-Watcher Skyliner-300P FlexTube SynScan.
The Skyliner-300P FlexTube SynScan is the ultimate in dobsonian design offering convenience and portability...
FREE: Power Supply Unit.
Sky-Watcher NEQ6 PRO
Sky-Watcher EQ6 PRO mount.
NEQ6 PRO (EQ6 PRO) is the extra heavy duty, computerised mount from Sky-Watcher with a load capacity of 25kg.
Ascension 80ED Triplet
Ascension 80ED Triplet
The Ascension 80ED Triplet APO from the premium range of
Ascension telescopes. Alumi- nium case and accessories are optional...
Meade LS 6 ACF
Meade ETX-LS 6".
The Meade LS 6 ACF is the most advanced catadioptric telescope on the market.
Photo-Visual Focal Reducer
Opticstar 1.25" Focal Reducer.
The Opticstar 1.25" Photo Visual Focal Reducer doubles the telescope's field of view.
Cooled CCD
Opticstar DS-145 ICE
The Opticstar DS-145C ICE uses the highly sensitive Sony ICX285, 1.4 mega pixel colour CCD with 62% QE.
Complete with power supply unit, adapters, case and software...
Opticstar ED80S Gold
Opticstar ED80S Gold.
The Opticstar ED80S Gold with dual speed Crayford focuser and apochromatic fluorite doublet
FPL-53 objective. Durable all-metal construction...
Auto-Guider Kits
Shoestring auto-guiding kit
Elegant, low-cost Auto-Guider connectivity kits from Shoestring Astronomy.
Skyhawk-1145P SynScan
Sky-Watcher Skyhawk-1145P SynScan AZ GOTO
The Skyhawk-1145P SynScan AZ GOTO from Sky-Watcher is a complete computerized telescope.
Trius SX-36
Trius SX-36
The Starlight Xpress Trius SX-36 is the 16 mega pixel camera with fast USB 2.0 interface.
The Imaging Source
Imaging Source CCD camera.
The DMK / DFK / DBK series of CCD video cameras from The Imaging
Source feature a FireWire or USB 2.0 computer interface.
Ascension Accessories
Ascension Altazimuth Mount.
The Ascension Altazimuth Mount is best suited for carrying short telescopes and cameras...
Altair 8" RC Astrograph
Altair RC 8" Astrograph.
The Altair 8" F8 Ritchey Chretien is a true astrograph with a carbon fibre optical tube and two dovetail plates.
FREE: Plossl eyepiece.
Astronomy News
Heaviest Stars Are Twins
posted: 29th May 2004
Astronomers with the Harvard-Smithsonian Center for Astrophysics have found the heaviest star ever seen - 80 times the mass of our Sun - and it's got a twin. Located 20,000 light-years from Earth, the two massive stars in WR 20a go around each other every 3.7 days. These two stars are just 2 to 3 million years old, and highly unstable. It'll only be a few more million years before they explode, one after the other as supernovas. WR 20a is part of the Westerlund 2 star cluster, which resides in a region of ionized hydrogen left over from the cluster's formation in the constellation Carina. WR 20a contains two hot, young Wolf-Rayet stars-a type of star that is extremely rare and short-lived.
The gigantic twin stars. [Credit:NASA]
Headquartered in Cambridge, Mass., the Harvard-Smithsonian Center for Astrophysics is a joint collaboration between the Smithsonian Astrophysical Observatory and the Harvard College Observatory. CfA scientists, organized into six research divisions, study the origin, evolution and ultimate fate of the universe.

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Opticstar News
DS-616C XL is Astronomy Magazine's Star Product
posted: 30th January 2015
Opticstar DS-616C XL is Astronomy magazine's product of the year.
DS-616C XL is Star Product

The Opticstar DS-616C XL deep-sky CCD camera has earned the annual star product award from Astronomy, the world's best-selling astronomy magazine. Read about it in the September 2013 issue.

Willmann Bell
Books for Astronomy
updated: 23rd April 2015
Willman Bell books.
Acclaimed books from Willmann Bell...
Opticstar News
Imaging Brochure
updated: 10th February 2014
Opticstar brochure.
Download the Opticstar imaging catalogue here.
CCD Temperature And Dark Current Correction
Dark current.
An important step in CCD image calibration is the...
A&M 152mm f/8 Review
"Fantastic Performance" "Beauty of a Ferrari"
updated: 25th March 2009
A&M 152mm f/8 TMB.
Read the latest review about the A&M 152mm f/8 A&M/TMB on Cloudy Nights. According to the review this telescope combines the "beauty of a Ferrari" with "fantastic performance". The review also states that "the manufacturer's claims are valid".
We want to hear your comments.
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updated: 21st February 2012
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