Posts Tagged ‘nexstar 6se’

Exploring Even More Of The Night Sky With A Virtual Telescope

Friday, January 27th, 2012

Virtual telescopes offer an excellent solution for those who do not have their own telescope such as a NexStar 6SE or who do not have access to one at an observatory or other location.

These virtual telescopes provide connections with innovative instruments inside an observatory or space organisation and these telescopes can be utilised for research and study. These services are also utlised by those such as amateur astronomers who have their own telescope such as a NexStar 8SE, wanting access to powerful observatory equipment. Some services are offered for free and others are available for a fee. You can access the service remotely via your computer and broadband internet connection so when you’re set up, you’re ready to go.

Microsoft Research’s Worldwide Telescope service is an example of a free offering. You either use their service via your web browser or via a Microsoft Windows program that you install on your local computer. This software enables you to search the universe, combining imagery from ground and space-based telescopes with 3D navigation.

Observatories and other organisations provide many services to amateur astronomers which are available for a fee. One such service provided by the Bellatrix Astronomical Observatory in Italy can be accessed at virtualtelescope.eu. Premium services are sometmes offered by the trained astronomers at these observatories where members can receive further information and facts and assistance from them personally.

Some observatories include services where members can organize for an astronomical observation instrument to be set up where they are able to watch the resulting images via their internet connection. Some virtual telescope websites provide access to archived materials that can be viewed or allow access to real time pictures of the skies.

Perhaps one of the most exciting abilities for virtual telescopes, which has already been deployed successfully, is the ability to form a single super impressive virtual telescope by combining the dishes together from multiple telescopes. In 2008, astronomers at the MIT Haystack Observatory attached radio dishes together in Hawaii, California and Arizona, creating a virtual telescope more than 2,800 miles across! This enabled them to see detail more than 1,000 times finer than the Hubble Space Telescope and they obtained the most detailed view to date of what many believe to be a large black hole at the center of our galaxy.

The pictures supplied by these virtual telescopes are of course far superior to those viewable by an amateur astronomer using their own telescope such as a Meade ETX 125 and virtual telescopes offer insight into many mysteries of the evening sky. 

The Importance Of Understanding Telescope Collimation

Wednesday, January 4th, 2012

There is nothing more annoying than setting up your telescope for an evening of stargazing only to discover that all the images seem fuzzy! We’ve all been there and this can occur with any sort of telescope. The odds are that your telescope is in need of collimating to enhance its general performance.

So how will collimating your telescope help you get superior outcomes and what is it? Collimating a telescope refers to the method of lining up its optical components in their suitable positions to increase its efficiency. These components are your mirrors, lenses, eyepieces and prisms. This needs to be carried out carefully and accurately or otherwise your image quality will be inadequate. Collimation is an essential procedure to learn regardless of the sort of telescope you own and a nightly check only requires a couple of seconds with a minute’s adjusting where necessary.

You can do a quick check of your telescope’s collimation by centering a bright star in the eyepiece that will provide a high magnification. When this star is out of focus it will appear like a doughnut shape with a dark centre. On a well aligned telescope, this dark patch will sit correctly centralised within the bright ring. Your optics are in need of alignment when this dark patch is not centred.

Manufacturers of telescopes such as the Celestron NexStar 8se collimate their equipment as a standard practice prior to transportation, so you’re probably querying why you would need to change their settings. You would expect a telescope manufacturer to know more about this than you, correct? A great deal can happen to your telescope between when it is shipped and when it arrives on your doorstep and it might possibly have lost much of its collimation. Long journeys sometimes involve shaking and jarring which can result in optics going out of position. In any event, factory collimated refractor, Schmidt-Cassegrain or Maksutov telescopes such as the Celestron NexStar 6se are more likely to retain their adjustments than Newtonian telescopes.

Briefly, to collimate your telescope you work from the eyepiece and make your way to the primary mirror. You then tweak the secondary mirror, so you can see the primary mirror within it centrally. You then tweak the main mirror to see the top of the tube and secondary mirror within that centrally. Due to the uniqueness of different telescope versions, each has their own collimation method. So be sure to check your instruction manual very carefully to find out the proper telescope collimation method for your make and product.

Seeing great crisp, distinct images of the night sky will boost your enjoyment as an amateur astronomer.