These two telescopes cost roughly the same and could hardly be more different. One is 150mm of fast Newtonian optics on a simple Dobsonian base with phone guidance. The other is 150mm of slow Schmidt-Cassegrain optics on a computerised tracking fork mount. Same aperture, entirely different instruments.
Take the Dobsonian for deep-sky observing and wide fields; take the 6SE for planetary detail, tracking and imaging potential.
Reflector · Intermediate
A 150mm parabolic tabletop Dobsonian with StarSense guidance, made for observers who want stronger deep-sky performance without a bulky full-size base.
Catadioptric · Intermediate
The 6SE keeps the celebrated NexStar experience in a smaller package that is easier to move, set up, and grow into.
| Specification | Celestron StarSense Explorer 150mm Tabletop Dobsonian | Celestron NexStar 6SE |
|---|---|---|
| Price | ₹65,000 | ₹1,30,000 |
| Aperture | 150 mm | 150 mm |
| Focal length | 750 mm | 1500 mm |
| Focal ratio | f/5 | f/10 |
| Optical design | Newtonian | Schmidt-Cassegrain |
| Mount | Dobsonian | Alt-Az GoTo |
| GoTo | Manual | Yes |
| Max useful magnification | 300× | 300× |
| Experience level | Intermediate | Intermediate |
| Best suited to | Deep Sky | Planetary |
The same target through both telescopes, each drawn from its own aperture and focal length.
Celestron StarSense Explorer 150mm Tabletop Dobsonian
150mm · 750mm focal length
At 75×, Saturn looks about 1.6× as wide as the full Moon does to your naked eye — small, in a wide field.
Magnification uses the same 25mm (Moon, nebula) and 10mm (planets) reference eyepieces as the specifications above. Which features appear is not a formula: each is shown from the aperture at which our own guides say it becomes visible. Star positions and crater positions are illustrative; how many appear follows the limiting magnitude and resolving power.
Celestron NexStar 6SE
150mm · 1500mm focal length
At 150×, Saturn looks about 3.3× as wide as the full Moon does to your naked eye — small, in a wide field.
Magnification uses the same 25mm (Moon, nebula) and 10mm (planets) reference eyepieces as the specifications above. Which features appear is not a formula: each is shown from the aperture at which our own guides say it becomes visible. Star positions and crater positions are illustrative; how many appear follows the limiting magnitude and resolving power.
Illustration of a typical view under a dark sky. City skies and atmospheric conditions will show less. The square close-ups are enlarged to show detail; the circles are to scale.
₹65,000
₹1,30,000
The focal ratios tell the story: f/5 versus f/10. The Dobsonian gives you twice the field of view at any given eyepiece, which suits large deep-sky objects and makes finding things easier. The 6SE gives you twice the magnification from the same eyepiece, which suits planets. Neither is better; they are optimised for opposite ends of the hobby.