Orion Sirius 80ED EQ-G GoTo Refractor Telescope
The main feature that sets the Orion Sirius 80 EQ Go To refractor telescope apart from the others is that it is ideally designed for suburb astro-photography. When taking photographs of the night time sky, it is vital to have a high quality reliable telescope to use.
The lens used on the Orion Sirius refractor telescope has a f/7.5. An advantage to the 80 mm objective lens. One of the lenses used is specially made to reduce the color infringing that occurs from chromatic aberration, causing the lines and blurring of color in the images that are taken. These have been a bane of astro-photographers for a very long time.
This telescope comes with the Sirius EQ-G Go-To mount to achieve stability while taking pictures. Both stability and control are needed when taking photographs with the Orion Sirius 80 EQ refracting telescope since it is such a powerful scope. This stability is provided by using the Crayford style focuser for both two inch and one and a quarter inch accessories while mounting your camera and imaging eyepiece.
The database has nearly forty three thousand images of the celestial objects for astronomical photographers to refer to when using the hand controller. This is used in order to zero in on the precise astronomical features desired. The mount has internal motors to stabilize the two different axis. One great feature is the periodic error correction to correct movement of the planets and stars as our earth rotates and moves through space; this stabilizing results in the wonderful photographs that are taken with this scope.
The price of the Orion Sirius 80ED refractor telescope is $1, 499.95; also payable is a shipping charge. This telescope is not intended for children to use unattended, it is intended for adult use.
The Go To hand controller requires a Windows 95 platform or later, a computer interface cable that is supplied, an RS-232 communications port on the personal computer being used, and a DC power supply that is at least 7.5V to 15V @ 100mA or greater output. It needs to have a 2.1 mm tip with a positive plug for minimal performance. It is important to make sure that the communication port on the personal computer is able to meet the high transfer rate. If it is not, the information can be uploaded at a lower rate, but the time needed will also be increased.
The tripod for the Orion Sirius 80 ED has 1.75 diameter legs made of stainless steel with a stabilizing tray that allows the telescope to be mounted easily and efficiently while in use. It requires a twelve volt DC battery or it can be adapted to use 110 volt power by using an adapter that switches from alternating current (AC) to direct current (DC). It has a one year limited warranty.
For the price the Orion in question is an excellent scope, geared toward the more serious amateur sky watcher.
 |
Skywatcher Startravel 120 (EQ3-2) Short Tube Refractor Telescope Sale Price: £348.95  |
|
The compact Sky-Watcher Startravel series are two-element, air-spaced, multi-coated objective, achromatic refractors, and are well proven performers for "Rich-Field" views of star fields, clusters, nebulae, bright galaxies, planets, the Moon and, the Sun (with correct safety filtering!), as well as giving excellent terrestrial views. These wide-field short-tube telescopes are also highly portable. They also are popular for use as guide scopes on larger telescopes. All models excel as fixed aperture lenses for both Astrophotography and terrestrial photography. Their "fast" focal ratios combined with today's high-speed films make them useful for capturing lunar and solar eclipses as well as nature photographs. Features: -Direct SLR Camera Connection -Red Dot Finder -Dual-Fit 1.25"/2" Focuser -1.25"/31.7mm Star Diagonal -Multi-Coated Objective Lens -EQ3-2 Deluxe Equatorial Mount -Built-in Polar Alignment Scope Holder -Aluminium Tripod with Accessory Tray -38% more Light Gathering than 102mm |
£5.00
