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 » LX90 SCT & ACF Series. 
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 » Premium Refractor Telescopes. Coronado Solar Telescopes: 
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 » Cooled, long exposure cameras, 6.1MP CCD, USB 2.0. 
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 » Auto-Guiding systems, complete solutions. Ascension telescopes and accessories: 
 » Apochromat ED Triplet Refractors 
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 » Mirror and prism diagonals. Starlight Xpress: 
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 » Guide Cameras. 
 » Filter Wheels. Farpoint Astro: 
 » Dovetail systems and mount accessories. 
 » Focus masks. 
 » Binocular mountings. Willmann Bell books. Shoestring Astronomy sections: 
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Meade Stella Wi-Fi Adapter
Meade Stella Wi-Fi Adapter.
£225.00
Stella allows you to wirelessly control your computerised telescope with your smart phone or tablet.
1.25" x3 XL TeleXtender
Opticstar 1.25" x3 TeleXtender.
£79.00
The Opticstar 1.25" x3 XL TeleXtender is a premium quality optical amplifier that excels...
Cooled CCD
Opticstar DS-616C XL+
£899.00
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 LPI-G Colour
Meade LPI-G colour
£184.00
The Meade LP-G Colour video camera for imaging and guiding.
Meade LX200 ACF 12" UHTC
Meade LX200 ACF 12" UHTC.
£5250.00
The Meade LX200 ACF 12 UHTC is a 12" advanced catadioptric with a computerised fork mount.
Ascension 80ED Triplet
Ascension 80ED Triplet
£595.00
The Ascension 80ED Triplet APO from the premium range of telescopes...
Meade ETX80 Observer
Meade ETX80 Observer
£299.00
The ETX80 Observer telescope is ultra-portable and ideal for astronomy and terrestrial use.
2" Drawtube to SCT
Opticstar 2" Drawtube to SCT (F) adapter.
£14.95
Opticstar 2" Drawtube to SCT allows 2" accessories to be attached to an SCT telescope.
Meade LPI-G Monochrome
Meade LPI-G monochrome
£192.00
The Meade LP-G Monochrome video camera for imaging and guiding.
Opticstar PX-126C
Opticstar PX-126C
£129.00
The Opticstar PX-126C colour video camera for guiding and planetary imaging.
Ascension Accessories
Ascension 2" SCT Enhanced Mirror Diagonal.
£
The Ascension 2" SCT Enhanced Mirror Diagonal is a premium CNC machined...
Astro Calendar (1)
3500BC - The Grand Menhir of Locmriaquer
The Grand Menhir of Locmriaquer is the largest in Brittany. It was erected round 3,500BC and probably its main purpose was to assist astronomical observations. The Grand Menhir of Locmriaquer is an unpolished block of stone planted in the ground as most menhirs are.
The Grand Menhir

3000BC - Constellations are first recognised
It was around this time that star constellations were first recognised.
Constellations

2750BC - Ancient Structures Point to the Stars
For the first time man made structures including Stonehenge and the Pyramids are aligned in such a way that the Sun and/or chosen Stars shine though carefully selected openings at special times in the year including solstice as in the case of Stonehenge.
The pyramids.

2296BC - Comets Catalogued For First Time
For the first time Chinese astronomers are making records of comets within the Earth's vicinity. Such knowledge is not shared and remains within the reach of very few within the emperor's courts for thousands of years.
Credit: ESA

1600BC - Constellations Are First Identified
Astronomers in Mesopotamia (modern Iraq) identify the constellations of the zodiac. These are the constellations the Sun moves through every year.
Mesopotamia

1300BC - Chinese Establish Length Of A Year
Astronomers in China calculate the length of the year to 365 days and 6 hours.
Length of year.

585BC - Solar Eclipse Predicted By Thales
Thales of Miletus (Greek, 624BC-546BC) predicts a solar eclipse for the first time. Modern astronomers have dated the solar eclipse taking place on the 28th of May 585BC.
Solar eclipse.
[Credit: NASA, GSFC]

530BC - Pythagoras Recognises Earth Is Sphere
Pythagoras of Samos is often described as the first pure mathematician (Greek, 572BC-479BC). Pythagoras recognises that the Earth is a sphere and suggests that other heavenly bodies revolve round it.
Earth is round.
[Credit: NASA, SSC]

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Product Search

Opticstar News
New DS-616C XL+ Model
posted: 24th August 2017
Opticstar DS-616C XL+.
Star product, improved.

The new Opticstar DS-616C XL+ deep-sky CCD is the successor to the popular DS-616C XL that earned the annual star product award back in 2013. It maintains all the features of the original model as well as other improvements.


DS-616C XL is Astronomy Magazine's Star Product
posted: 12th September 2013
Opticstar DS-616C XL is Astronomy magazine's product of the year.
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.

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updated: 18th June 2019
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Willmann Bell
Books for Astronomy
updated: 28th February 2019
Willman Bell books.
Acclaimed books from Willmann Bell...
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Opticstar News
Imaging Brochure
updated: 10th February 2014
Opticstar brochure.
Download the Opticstar imaging catalogue here.
more
Articles
Pixel Response Effects On CCD Gain Calibration
Pixel response.
The gain of a CCD camera is the conversion between...
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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