The interferometer is essentially a measuring instrument. We are using the very latest Zygo MX software to provide a more detailed report compared to other standard reports. We are extremely pleased to announce our Zygo Interferometer is now installed and ready for use! Our experienced staff can test refractor lenses up to 120mm aperture and provide a comprehensive 2 page report showing the optical quality and Strehl ratio, plus much more information. Zygo Interferometer Testing For ED Refractor Telescopes! If you have any questions regarding stock levels or delivery, please get in touch. This is due to massive postage costs and problems regarding returns. Please note we do NOT ship telescopes or heavy items outside of the UK. Please get in touch with us for any postage costs. This all depends on the size and weight of the items. It is at our discretion what we ship outside of the UK. Please note International customers will need to contact us for a shipping price prior to ordering via the website. If the stock is not at the shop, we won't be able to ship on any of the timed services. Also, please remember to check that the stock is here at the shop before placing orders. Also, orders using the Saturday and Sunday services must be placed before 1pm the previous working day. Please note that if you are wanting to take advantage of our Saturday and Sunday timed services or next day pre 12 or pre 10:30 services, you MUST check that the stock is here at the shop before placing orders. Smaller items can still go 1st class via Royal Mail. If you live in the Scottish Highlands/Islands, Channel Islands or Northern Ireland, then a shipping surchage will apply. The delivery costs for courier next day are for mainland UK only. To double check the stock levels at the shop, please contact us on 01909774369 or delivery times for most items is 1 - 2 days but again, please double check stock levels on important orders before placing an order via the website. Some items that are showing as in stock are in stock at our holding warehouses, not at the shop. The galaxies shown are knows as: Centaurus A (NGC 5128), NGC 253, NGC 454, NGC 520, NGC 986, NGC 1232 and NGC 6050, which is colliding with IC 1179. Due to the vast number, most of the galaxies are either unnamed or are just known by a number and often lack a descriptive name. It is estimated that there are about 200 billion to 2 trillion galaxies, containing more stars than there are grains of sand on our planet. Irregular shapes include ultra diffuse galaxies, lenticular galaxies, ring galaxies as well as galaxies with disrupted or completely irregular structures. The can be of elliptical, spiral or irregular shape. Galaxies are usually categorized according to their visual morphology.

It is then that black hole that is the galaxy's centre of mass and around which all the galaxy's stars are orbiting. Many galaxies comprise a supermassive black hole at the centre. Their size ranges from just a few hundred million to one hundred trillion stars.

Galaxies are gravitationally bound systems of stars, stellar remnants, interstellar gas, dust and dark matter. Galaxy is derived from the Greek word for “milky”, referring to the Milky Way, the galaxy that contains the solar system and that we live in.

To round off your adventure, the scenic discs provide the corresponding horizons. All this and much more is finally possible with our broad selection of additional discs. Prepare your next astronomical trip to Down-Under, look at the earth or moon during day or night or even approach the Andromeda Galaxy. The colourful discs let you travel to many different places in the universe without leaving your home. The dream comes true with the additional discs for the Sega Toys Homestar Flux, Original & Classic. Imagine seeing the sky from a different angle.

Sega homestar flux disc