The easily portable Orion StarSeeker IV 127 mm (5-Inch) aperture GoTo Maksutov-Cassegrain Telescope Kit presents a winning combination of motorized object-location technology and great optical performance at an unbelievably low price. This smart GoTo telescope will lead you and your family on a guided tour of the stars on any clear night.
Featuring a compact Maksutov-Cassegrain optical tube with an extra-long 1540 mm focal length and f/12.1 focal ratio, the conveniently portable "Grab-and-GoTo" StarSeeker IV 102 mm Mak-Cass collects a lot of light with its 5-inch aperture objective lens for bright views, while its long focal length provides very sharp resolution at high magnifications. The entire telescope setup weighs only 22.2-pounds for easy transportability.
Following a simple two-star alignment process, the Orion StarSeeker IV 127 mm telescope can guide you to interesting sights on any clear night with its GoTo database of over 42,000 objects. A handy, built-in "Tour" mode feature of the included GoTo hand controller makes it easy for anyone to explore the wonders of starry skies, no matter how familiar or unfamiliar you are with the night sky. Once the StarSeeker IV 102 mm GoTo Mak-Cass locates a target for you to explore, the single-arm Alt-Azimuth mount's internal motors will automatically track the object's apparent motion and keep it centered so you can enjoy the view as long as you wish.
This fourth generation StarSeeker telescope features dual optical encoders on each axis of motion which allow you to move the telescope tube either manually by hand, or electronically by using the directional arrows on the GoTo hand controller. To save time, battery life, and reduce motor wear, you can manually point the telescope towards the general area of a target object, then engage the tube lock and use the hand controller to let the GoTo mount finish the fine-centering of the object electronically.
This complete, object-locating GoTo telescope setup includes a thorough assortment of useful accessories:
Two wide-field 1.25-inch eyepieces are included with the StarSeeker IV 102 mm GoTo Mak-Cass. The included 23 mm wide-field eyepiece provides 62x magnification in the 127 mm Maksutov-Cassegrain optical tube, and the 10 mm ocular yields a very high-magnification, 154x view through the telescope for close-up inspections of starry skies. Each included eyepiece has a wide, 60-degrees apparent field-of-view to show you more of the target object and its surroundings.
Use the included 90-degree star diagonal to view the night sky comfortably. A diagonal "bends" the light path of a telescope so you can enjoy the view without having to contort yourself into awkward positions to peer into the eyepiece. The 90-degree star diagonal that comes with the StarSeeker IV 127 mm GoTo Mak-Cass places the eyepiece you're using in a comfortable position for nighttime stargazing of the skies above.
The Orion EZ Finder II reflex sight makes it "EZ" to center alignment stars. Use the included EZ Finder II reflex sight to help center initial alignment stars when performing the two-star alignment required for accurate GoTo performance. This non-magnifying sighting device superimposes a tiny, LED-powered red dot, focused at infinity, on the sky. After a simple alignment procedure, the red dot shows exactly where your telescope is pointed.
Let the computerized GoTo controller guide you on a tour. The StarSeeker IV 127mm GoTo Mak-Cass lets you explore the skies with push-button ease thanks to its GoTo hand controller. With a vast database of over 42,000 celestial objects including stars, double stars, galaxies, nebulas, star clusters, and more, the included computerized GoTo hand controller will become your tour guide to the skies. The built-in "Tour" mode will show you great sights on any clear night.
Use the Moon Filter that comes with the telescope kit for great lunar views. Improve your telescopic explorations of the Moon by using the included Orion 13% Transmission Moon Filter. The threaded filter is easy to install on the included 23 mm and 10 mm eyepieces, and its neutral-density filtration will help enhance contrast of craters, mountains, and other interesting lunar features. The 13% transmission filter also helps reduce the bright glare of the Moon to make observations more comfortable.
The Orion MoonMap 260 makes it easy to learn about craters, spacecraft landing sites, and more! With locations and names of over 260 features on the Moon such as craters, mountains, valleys, "seas" and more, the Orion MoonMap 260 included with this telescope kit is a great tool for all amateur astronomers. The whole family will enjoy using the MoonMap 260 to properly identify all those craters and other lunar features the Moon Filter helps accentuate.
Keep your StarSeeker IV telescope powered all night long. This complete telescope kit also includes an AC-to-DC Adapter so you can keep your StarSeeker IV telescope's motors powered from a 110-Volt wall outlet. The handy adapter is especially useful for long stargazing sessions, since you won't have to worry about running out of battery power. The AC-to-DC Adapter features a 6-foot long cable, and easily attaches to optional extension cords.
The StarSeeker IV GoTo mount and its slanted, single-arm Alt-Azimuth design provides attached telescopes with 360-degrees of Azimuth motion and 90-degrees of Altitude motion for horizon-to-zenith pointing. A quick-release narrow dovetail saddle makes telescope attachment nice and easy. The StarSeeker IV 127 mm features an upgraded cylindrical leg stainless steel tripod that is much sturdier than previous models and adjusts in height for comfortable use. Tripod stability is further enhanced with the included dual-purpose spreader plate/accessory holder, which keeps the tripod rigid and provides a handy area for stowing idle eyepieces and accessories.
Since the StarSeeker IV 127 mm Mak-Cass can locate and track celestial objects with its motorized GoTo system, you can use it along with a camera or smartphone to take impressive pictures of the night sky. Capture stunning snapshots of the Moon, planets and more by attaching a dedicated astrophotography camera, or a combination of an Orion SteadyPix accessory and your own point-and-shoot camera or smartphone to the StarSeeker IV 127 mm Mak-Cass to explore the rewarding hobby of astrophotography. (Cameras and SteadyPix accessories sold separately.)
Each StarSeeker IV telescope is powered by 8 internally stored AA user supplied batteries. A 12V DC auto-lighter plug is included for use of optional 12V DC field batteries.
Limited Warranty against defects in materials or workmanship for one year from date of purchase. This warranty is for the benefit of the original retail purchaser only.
Please note this product was not designed or intended by the manufacturer for use by a child 12 years of age or younger.
127 mm (5")
Light Gathering Power
1 Year Warranty
Orion StarSeeker IV 127 f/12.1 Maksutov-Cassegrain Telescope Optical Tube Assembly
StarSeeker IV GoTo Alt-Azimuth Mount
Orion AZ/EQ Computerized GoTo Hand Controller (Synscan)
Orion EZ Finder II Reflex Sight
23 mm Wide-Field 60-degree AFOV Eyepiece, (1.25-inch)
10 mm Wide-Field 60-degree AFOV Eyepiece, (1.25-inch)
1.25-inch Star Diagonal
PC Interface (Serial) Cable
12V DC Power Cable (Auto Lighter Plug to 2.1/ 5.5 mm Plug)
Hand Controller Holder Bracket and Strap
Starry Night SE Astronomy Software Digital Download Insert