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Description
Celestron NexStar 4 SE 102mm f/13 Maksutov-Cassegrain Go-To Telescope102mm 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
- 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
UPC: 050234110495
| 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" |
In the Box
Celestron NexStar 4 SE 102mm f/13 Maksutov-Cassegrain Go-To Telescope
- 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
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4.4 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 4
I like this book
Format: Hardcover
I like how this book made you look at things differently and made you understand you're self in ways you never had before and be fine with what you saw. theirs always been more then one way to be and their always will be. this book also let's you be fine with not socializing if that's how you feel
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Reviewed in the United States on May 17, 2026
★★★★★ 5
There All Along
Format: Kindle
It all came about on a recent trip to Mexico after my wife of ten years forwarded an article about Dr Kaminski’s discovery of a new personality type.
Interested, I dove in to find everything that I read resonated deeply. I looked up the book and bought the Kindle version and it’s been un-put-down able since.
My life hasn’t been without a struggle here and there. The short version is that I put myself through Boise State in their accounting program, did well, and then graduated in ‘89.
Don’t laugh, my parents thought it would be good if there was an accountant out there with “personality.” It was a bad idea but I didn’t want to do something beneath me like paint houses or be a mechanic. So I gave in.
There was an immediate price to pay. My long time girlfriend broke up with me because she wanted us to be more and I felt I had to focus on school and work.
I had decent grades despite my shattered heart and my professors were fairly supportive of me. I received an attractive offer to work in a regional firm but it turned out I not only didn’t like the work but even worse, I couldn’t do it.
In practice nothing made sense. Balance sheets wouldn’t balance. Income statements wouldn’t reconcile with sales and closing the books was hell. It all seemed so unlike the problems in my textbooks. So I continued working in the grocery store for a few more years.
Then in 1992, I met a girl, you know “the one.” Because she was pretty and actually returned my call, I had to have her like she was a possession.
So we dated and got married and I sat for and passed the CPA exam and went on to work as an auditor for the State of Idaho which is a lot of fact checking and report writing. In true fashion I tired of the politics and mostly just having a boss.
Time marched on. We had kids. She knew she’d found her sucker. I quit my job, opened a private practice specializing in bookkeeping and taxes, neither of which I was very good at.
I was good at trying to keep my infinitely narcissistic wife happy keeping up with the Joneses and all the appearances. Through utterly pathetically and foolish means. I got in over my head and embezzled from a client which was discovered although I was never prosecuted, which I correctly predicted.
So it’s complicated and I always wondered why I would do such a thing. The answer is elusive, and obviously it was an unbelievably stupid thing to do but I feel I did it either as a cry for help or because I thought my ex wife was worth doing something so wrong. I think I wanted to get caught so I could get my life right at some point.
I’ve gone with the cry for help answer because no one is worth stealing for.
After $75,000 in child support (which was artificially high due basically to what amounted to extortion from my lovely ex wife - she found out I embezzled to hang on to her then weaponized it against me) and repaying the client I stole from, I started working as a solo painting contractor and never looked back.
Life got good for me after I straightened out and became who I am. My second wife believed in me and supported me unconditionally.
We’re retired now and are moving to Mexico this summer. 2026
I’m now 61, took the test, my score 227/280. Undeniably an Otrovert.
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Reviewed in the United States on April 2, 2026
★★★★★ 5
Life changing and immensely comforting
Format: Kindle
A well written and descriptive book on a topic that I had never seen before but described me to a T. This book lead to great clarity about why I feel the way I do, how to embrace the positives, and best of all, how to navigate a world where I am different from most through peace and empowerment. An excellent read even if these traits don't apply to you, as understanding the inner workings of others and allowing each to be his/her own person is where we learn to live in harmony. Excellent book.
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Interesting and informative
Format: Hardcover
Somewhat contrarian to traditional thinking
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Reviewed in the United States on May 24, 2026
★★★★★ 3
Not a new personality type -- one of the 16 Myers Briggs types
Format: Kindle
The author claims to have identified a personality type that differs from the 16 types identified in the Myers Briggs Type Indicator (MBTI). Among those 16 MBTI types, 8 are extraverts and 8 are introverts. The author refers to those 8 introvert types as a single personality category, and then he tries to differentiate them from the type he proposes: the Otrovert. However, his description of the Otrovert is a detailed, accurate description of one of the 8 Myers Briggs introvert types: the INTJ. So he has not identified a new personality type; he has simply isolated one of the 16 MBTI types and elaborated on it. He does an excellent job of explaining the nuances of the INTJ personality, but he has not identified something new. I would have rated this book 5 stars if it had been presented as a closer look at the INTJ type. The book "Type Talk" by Kroeger and Theusen is the preeminent authority on the MBTI, written by people who qualify instructors to administer the MBTI instrument--find it on Amazon at this link:
https://www.amazon.com/Type-Talk-Personality-Types-Determine/dp/0440507049/ref=sr_1_1?
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Reviewed in the United States on September 10, 2025