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Skywatcher Star Discovery P150i Wifi Go-To Telescope


Quick Overview

Building on the success of the Skywatcher Star Discovery 150P Goto telescope, this new version eschews a handset for a wifi link dongle to control the whole system via an Android or iOS smartphone or tablet. Simply download Skywatcher’s Synscan App, log your de ice into the wifi network set up by the telescope’s plug in dongle and wirelessly control the mount.

The P150i is a Newtonian reflector, with a 150mm, or 6-inch diameter primary mirror - which is a good quality parabolic design. The emphasis on the design of this telescope is simplicity and as such, the mirrors are collimated solely via adjustment of the secondary mirror assembly, rather then the primary as well. While this may seem to some to be a negative, in our experience, in practise, the arrangement works well. Both the primary mirror’s cell and the secondary super and mount are well designed and machined, which allows for very reasonable collimation to be reached with the minimum of fuss.

The telescope comes with two eyepieces: 10mm and 25mm Modified Achromats, which while being a simple design (which can be easily and inexpensively upgraded), certainly give very reasonable views right out of the box (at 75x and 30x respectively). The telescope can definitely provide more magnification than this for Lunar and Planetary observations, so an additional eyepiece in the 7.5mm-9mm range, when coupled with a Barlow lens, would give magnifications ranging from 167x-200x - a sensible upper limit for high power work with an instrument of this size.
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Skywatcher Star Discovery P150i Wifi Go-To Telescope Specifications:

Magnifications (with eyepieces supplied): x30 & x75
Highest Practical Power (Potential): x300
Diameter of Primary Mirror: 150mm
Telescope Focal Length: 750mm (f/5)
Eyepieces Supplied (1.25"): 10mm & 25mm
Parabolic Set Primary Mirror
Red Dot Finder
1.25” Rack & Pinion Focuser
Star Discovery AZ Go-To Alt-Azimuth Go-To Mount with Dual-Axis Tracking
Freedom-Find™ Dual Encoder Technology
Synscan™ Wi-Fi Adaptor Module
Controller: Free SynScan App for iOS and Android mobile device or Synscan Hand Controller (available separately)
SynScan App Database: Total 10,000+ Objects. Deep Sky Objects: 10759, including Messier, NGC, IC, Caldwell Catalogues, Named DSOs, Named Stars: 305, Double Stars: 55, Solar system objects: 7 planets, Sun , Moon. (Unlimited objects when working with a 3rd party planetarium software).
SynScan App Alignment Method: Brightest Star Alignment, North-Level Alignment
SynScan App's Other Features: Tonight's Best Sky Tour, Point and Go with a mobile device, Identification of Celestial Objects, Remote control over Internet, User defined objects, Pointing Accuracy Enhancement (PAE)
45mm Sky-Watcher/Vixen type dovetail saddle
Interface: SynScan Hand Control Port, DSLR Shutter Release Port (optional cables available separately)
Connectivity: ASCOM platform for Windows PC, Mobile planetarium App for iOS and Android ( SkySafari Plus/Pro, more are coming).
Power Requirement: 12v DC 1Amp Power Supply (Tip Positive) or 8 x AA Batteries (not supplied)
Sky-Watcher 7Ah or 17Ah Power Tank Recommended
Stainless Steel Tripod with Accessory Tray
33% more Light Gathering than 130mm

Most reflectors today usually have a coat of aluminium as the mirror surface and then an overcoat of silicon monoxide or silicon dioxide to protect it. Silicon dioxide produces a much more durable coat than silicon monoxide but requires specialized equipment to apply it and is therefore more expensive. Protection is needed, because in most reflectors, the mirror is open to the elements and deterioration of the reflective layer reduces the resolution of the telescope. ALL Sky-Watcher reflectors are Multi-Coated with Silicon Dioxide as standard for Optimum Durability and Long Term Performance.

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