Meade Instruments:  
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The Imaging Source: 
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 » Ascent series up to 16MP cooled CCD, USB 2.0. 
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 » Filter Wheels and Accessories. Shoestring Astronomy sections: 
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 » Focus motor controllers.
Opticstar AZ80 GOTO
Opticstar AZ80 GOTO.
£229.00
The Opticstar AZ80 GOTO is one of the easiest to use entry level computerized telescopes...
2" x2 XL TeleXtender
Opticstar 2" x2 TeleXtender.
£148.00
The Opticstar 2" x2 XL TeleXtender is a premium quality optical amplifier that excels...
Cooled CCD
Opticstar DS-616C XL
£1299.00
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 8" UHTC
Meade LX90 ACF 8" UHTC.
£1995.00
The Meade LX90 ACF 8 UHTC is a 8" advanced catadioptric with a computerised fork mount.
Altair 10" RC Astrograph
Altair RC 10" Astrograph.
£2150.00
The Altair 10" F8 Ritchey Chretien is a true astrograph with a carbon fibre optical tube and two dovetail plates.
FREE: Plossl eyepiece.
Equinox-80 PRO
Sky-Watcher Equinox telescopes.
£514.00
The Equinox-80 PRO from Sky-Watcher features its highest quality optics, improved engineering...
FREE: Plossl eyepiece.
Sky-Watcher NEQ6 PRO
Sky-Watcher EQ6 PRO mount.
£945.00
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
£745.00
The Ascension 80ED Triplet APO from the premium range of
Ascension telescopes. Alumi- nium case and accessories included as standard...
Meade LS 6 ACF
Meade ETX-LS 6".
£1595.00
The Meade LS 6 ACF is the most advanced catadioptric telescope on the market.
Low Profile 1.25" Nosepiece
Opticstar 1.25" Low Profile nosepiece.
£19.95
The Opticstar Low Profile C/CS to 1.25" allows cameras to be attached to standard 1.25" eyepiece holders.
Cooled CCD
Opticstar DS-145 ICE
£995.00
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.
£469.00
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
£79.80
Elegant, low-cost Auto-Guider connectivity kits from Shoestring Astronomy.
Skymax-127 SynScan
Sky-Watcher Skymax-127 SynScan AZ GOTO
£354.00
The Skymax-127 SynScan AZ GOTO from Sky-Watcher is a complete computerized telescope.
Trius SX-36
Trius SX-36
£4499.00
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.
£269.00
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 Mounting Platform.
£39.95
The Ascension Mounting Platform is a versatile heavy duty mounting platform...
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: 12th February 2014
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: 12th December 2013
Willman Bell books.
Acclaimed books from Willmann Bell...
more
Opticstar News
Imaging Brochure
updated: 10th February 2014
Opticstar brochure.
Download the Opticstar imaging catalogue here.
more
Articles
CCD Temperature And Dark Current Correction
Dark current.
An important step in CCD image calibration is the...
more
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".
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