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Description
- 102mm Maksutov-Cassegrain Telescope
- 1325mm Focal Length, f/13 Focal Ratio
- StarBright XLT Optical Coating System
- Single Fork Motorized GoTo Alt-Az Mount
- 1.25" 25mm Eyepiece
- SkyAlign Alignment Technology
- NexStar+ Computer Hand Controller
- 40,000 Object Database with Sky Tours
- Red Dot StarPointer Finder
- Stainless Steel Tripod with Wedge
Celestron 's NexStar 4 SE 102mm f/13 Maksutov-Cassegrain Go-To Telescope is a powerful, versatile and user-friendly Maksutov-Cassegrain style telescope that can be used for observing everything from the Moon and planets to deep sky objects like galaxies and nebulae. Using Celestron's proprietary StarBright XLT multi-coating system, light transmission is increased throughout the entire optical path with anti-reflection multi-coated lenses, highly reflective multi-coated mirrors, and BK7 optical glass.
The scope's Maksutov variation of the Cassegrain optical system exchanges the front corrector plate of the more common Schmidt design with a convex meniscus lens which not only eliminates the need for periodic collimation, but the nature of the lens requires a smaller secondary mirror which limits obstruction and increases contrast. This optical system, coupled with its precision tracking, allows it to be a competent astrophotography/astroimaging platform for the Moon and planets - despite its relatively slow f/13 focal ratio
Driving the dual servo motors on the mount is the brains of the NexStar 4SE: the iconic NexStar computer hand controller. Packed with almost 40,000 celestial objects, it can hold up to 25 additional user-defined destinations and is updateable via the Celestron website. It has multiple alignment procedures to get you observing fast - including the super-easy SkyAlign system. Capable of being used in the northern or southern hemispheres, the NexStar has sidereal, lunar and solar tracking speeds to accurately follow near and deep-sky objects, plus nine slew speeds.
- Performance
-
- 4" aperture
- f/13 focal ratio
- 1325mm focal length
- BK7 optical glass primary mirror
- StarBright XLT optical coatings: Multi-layer aluminum/SiO2 (quartz)/TiO2 (titanium dioxide)/Si02 (silicon dioxide) mirror coatings with flat reflectivity across the light spectrum for both astrophotography/astroimaging and visual observation
- Multi-layer MgF2 (magnesium fluoride) and HfO2 (hafnium dioxide) anti-reflective lens coatings
- High-transmission water white glass corrector lens with 97.4% light transmission
- Resolution: Rayleigh: 1.36 arcsec / Dawes: 1.14 arcsec
- Secondary mirror obstruction: 1.25", 34.4% by diameter / 11% by area
- NexStar Computer Controller
-
- Two-line, 16-character LCD display
- 19 fiber optic backlit red LED buttons
- Database of over 38,000 celestial objects plus 25 user-defined
- Automatically slew to planets, objects, constellations plus a variety of catalogs, including the Messier, NGC, Caldwell, and SAO brightest stars
- Anti-backlash compensation programs-out play between gears for more precise tracking
- Tour Mode: Shows a selection of the most popular objects for the time and date you are observing
- Pre-programmed alignment systems including SkyAlign, Auto 2-Star, 1-Star, 2-Star, and Solar System for fast and easy set up
- SkyAlign alignment: Takes minutes, with minimal effort or experience - Point the telescope at three bright objects in the sky, and the telescope does the rest
- Pre-set sidereal, solar, and lunar slew speeds for observing the fast-moving Moon, to slower-moving deep space subjects
- Nine slew speeds: 4°/sec, 2°/sec, 1°/sec, 0.5°/sec, 2x, 4x, 8x,16x, and 32x
- RS-232 communication port allows for computer control
- Flash updateable via the Celestron website
- Mount
-
- Single fork alt-az
- Dual-axis servo motors with optical encoders allow for precise tracking with virtually no vibration
- Motor resolution: 0.26 arcsec
- Communication ports: Autoguider port, Aux port, hand-controller
- Runs on eight user-supplied AA batteries or optional 12VDC power supply
- Viewing Options
-
- Integrated internal 90° flip mirror
- With mirror flipped up the 90° angle puts head in a comfortable viewing position when scope is pointed at or near the zenith
- Lay mirror down to direct light to the visual back for astrophotography/imaging
- Eyepiece
-
- 1.25" diameter barrel
- 25mm focal length produces 53x magnification
- Anti-reflection multi-coated glass improves color rendition and contrast
- Threaded barrel accepts most 1.25" astronomical filters
- Fold down rubber eyecups for use with or without eyeglasses
- Starpointer
-
- Projects a single red dot in line of sight
- Un-magnified to make finding objects faster and easier
- Used primarily for alignment process
| Optical Design | Maksutov-Cassegrain reflector |
| Aperture | 102 mm |
| Focal Length | 1325 mm |
| Focal Ratio | f/13 |
| Eyepiece Barrel Diameter | 1.25" |
| Diagonal | Integrated 90° flip |
| Finderscope | StarPointer |
| GO-TO Capability | Yes, NexStar controller |
| Tripod | Stainless steel legs Adjustable height Built-in equatorial wedge Weight 10 lb / 4.5 kg |
| Mount Type | Motorized alt-az Single-arm fork |
| Power Source | 8 x AA batteries |
| Optical Tube Length | 13.5" / 342.9 mm |
| Weight | 21.0 lb / 9.5 kg, OTA/Mount/Tripod |
| Packaging Info | |
|---|---|
| Package Weight | 38.0 lb |
| Box Dimensions (LxWxH) | 32.0 x 27.5 x 13.5" |
- E-Lux 25.0mm 1.25" Eyepiece
- StarPointer Finderscope
- NexRemote Control Software CD
- The Sky CD-ROM Software for Windows
- RS-232 to Serial Port Cable - for GPS 16 Accessory
- NexStar Hand Controller
- Tripod with Accessory Tray
- Limited 2-Year Warranty
Bulk Discount
| Quantity | Price |
| 2 | ₹ 98009.8 |
| 3-5 | ₹ 97009.7 |
| 5-10 | ₹ 95009.5 |
| 10+ | ₹ 93009.3 |
Bulk discount will be automatically applied during checkout based on quantity.