SkyWatcher 305/1500 DOB 12" GOTO telescope

12-inch Dobsonian telescope with GOTO guidance and tracking system with 40,000 objects in the database

The new series of Dobson telescopes are optical instruments made with high precision, equipped with the GO-TO system. Thanks to their large aperture, telescopes of this type are perfect for visual observations, they are perfect for observing solar system objects, as well as nebulae, star clusters and galaxies. The tubes of the telescopes in this series are foldable, which makes this equipment, despite its considerable capabilities, easy to store and transport.

Unlike other foldable structures, Sky-Watcher telescopes do not require dismantling the tube for transport. They are transported in the form of two elements - a Dobsonian assembly with the GOTO system and a folded tube. When extended, such a telescope requires only gentle collimation. Operating the telescope is facilitated by the Sky-Watcher patented pressure adjustment along the height axis.

Dobsonians with the GOTO system are equipped with the SynScan AZ controller, which allows you to easily point the telescope to any direction in the sky. The user-friendly menu allows you to easily select one of over 42,900 objects stored in the system memory. Thanks to the use of special encoders, it is possible to rotate the telescope manually without the need to re-set the GOTO system. Telescopes of this type are an excellent combination of the advantages of large dobsonians with the convenience of using the GOTO telescope.

Technical parameters

• Optical system: Newton's reflector • Mirror diameter: 305mm • Lens focal length: 1500mm • Light power: 1/4.9 • Accuracy of the mirror: 1/8λ • Mirror glass type: Pyrex • Theoretical angular resolution: 0.39" • Maximum useful magnification: 600x • Length of the extended tube: 140 cm • Length of the folded tube (slipped): 92 cm • Outer diameter of the tube: 45 cm • Dimensions of the telescope packed in transport boxes: - tube: 54 x 54 x 105 cm, 27 kg gross
- Dobson assembly: 83 x 73 x 31 cm, 33 kg gross • Base weight: 24kg • Tube weight: 21 kg



GOTO SynScan AZ system

• controller: Synscan + built-in Wi-Fi assembly communication
• power supply: 10 to 15V, 1A, 2.1mm plug (standard container for 8x R20)
• drive: DC servo motors
• motor encoder resolution: 1,620,000 counts per revolution
• axis encoder resolution: 11748 counts per revolution
• speeds: 1x, 2x, 8x, 16x, 32x, 200x, 400x, 600x, 800x, 1000x
• tracking modes: sidereal, lunar, solar
• tracking method: azimuth, in two axes
• setting modes: for the brightest star, for 2 stars
• database of objects: 25 user-defined, Messier, NGC, IC catalogs, part of the SAO catalog, a total of 42900 objects
• setting accuracy: up to 5 minutes of arc



Equipment


The set includes the following accessories: • Crayford focuser with a diameter of 2" with a 1.25" reduction and T2 thread
• SP 25mm and 10mm glasses
• Dobsonian assembly with the GOTO SynScan AZ system (40,000 objects in the remote control database + assembly communication via Wi-Fi)
• 8x50 finder with a cross