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. 
 » Imaging filters. 
 » Barlow lenses. 
 » Binoviewers. 
 » Red dot finders. 
 » Eyepiece projection kits. 
 » Mirror and prism diagonals. iOptron: 
 » Altazimuth Mounts. 
 » Equatorial Mounts. Altair Astro: 
 » Imaging Newtonians. 
 » Maksutovs. 
 » Ritchey Chretien Astrographs. 
 » ED Triplet Refractors. Sky-Watcher: 
 » Equinox Refractor Telescopes PRO series. 
 » Evostar ED PRO Refractor Telescopes. 
 » Skymax PRO Maksutov Cassegrain Telescopes. 
 » Telescopes standard series. A&M Advanced Telescopes sections: 
 » Super apochromat refractors. 
 » Schmidt cameras. 
 » Ritchey Chretien catadioptrics. 
 » Maksutov Cassegrain catadioptrics. 
 » Dobsonian reflectors. 
 » Telescope accessories. 
 » Image gallery. 
 » Articles.
The Imaging Source: 
 » High speed USB 2.0 video cameras. 
 » High speed Firewire video cameras. Starlight Xpress: 
 » Cooled CCD Cameras. 
 » Guide Cameras. 
 » Filter Wheels. Farpoint Astro: 
 » Dovetail systems and mount accessories. 
 » Focus masks. 
 » Binocular mountings. Celestron: 
 » Advanced VX telescopes. 
 » CGEM telescopes. 
 » CGEM DX telescopes. 
 » CPC telescopes. 
 » EdgeHD telescopes. 
 » SLT telescopes. 
 » SkyProdigy telescopes. 
 » Omni XLT telescopes. MSB AstroArt software. Willmann Bell books. Apogee Instruments Inc: 
 » Ascent series up to 16MP cooled CCD, USB 2.0. 
 » Kodak Interline CCDs. 
 » Kodak Full Frame CCDs, internal shutters. 
 » Hamamatsu Back Illuminated CCDs. 
 » EMCCD Interline Transfer CCDs. 
 » Sony Interline CCDs. 
 » Filter Wheels and Accessories. 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 XS 70° SWA
Opticstar XS 70° SWA Eyepieces.
The Opticstar XS 70° SWA Eyepieces represent excellent value for money and high quality...
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 LX200 ACF 12" UHTC
Meade LX200 ACF 12" UHTC.
The Meade LX200 ACF 12 UHTC is a 12" advanced catadioptric with a computerised fork mount.
Skyliner-300P FlexTube
Sky-Watcher Skyliner-300P FlexTube.
The Skyliner-300P FlexTube feature retactable optical tubes, making them easy to transport and store offering the ultimate flexibility...
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 ETX-90
Meade ETX-90
The latest Meade ETX-90 models with UHTC optical coatings and sturdy mount...
AR90S Gold - Dual Speed
Opticstar AR90S Gold refractor.
The Opticstar AR90S Gold - Dual Speed 90mm f5.5 refractor for observing, imaging and guiding.
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.
Skymax-127 SynScan
Sky-Watcher Skymax-127 SynScan AZ GOTO
The Skymax-127 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 Projection Kit
Ascension 2" Projection Kit.
The Ascension 2" Projection Kit for all types of astro photography.
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.

<< >>
Product Search

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.
Centroid Noise And Precision Photometry
Centroid noise.
Centroiding noise is a random error, or "noise" component...
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.
Online Shopping
Credit & Debit Cards
updated: 21st February 2012
Online shopping.
We accept all the credit and debit cards shown above. Online payments are cleared by Barclays. Online payment integration by Worldpay. Please read our
Terms & Conditions

© Opticstar Ltd 2015