On topic of refractor vs reflector for imaging and aperture size, things are not as simple. I can try to briefly explain some aspects to help you decide but topic is complex one and you might want to research further (or ask additional questions).

The tradeoff is it is not portable. Some Dobsonais claim to be but I have never found one that travels nicely. The size and sensitivity of the tube and its mirrors do not lend to easy transport and the same goes for this model as well. Making moving easy… The limiting stellar magnitude is an important specification for astronomers as it indicates the telescope’s ability to observe faint objects. Based on the Alt-Azimuth principle, Dobsonian telescopes are fast and easy to set up. A box-type mounting allows the telescope to pivot in altitude while the box is rotated on a base in azimuth. The secret of the design is to correctly balance the optical tube and use materials that enable it to move easily when nudged but stay in position when not.

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Nebulas look sharp and colorful. You don’t realize how colorful nebulas truly are until you get a great look at them with a telescope like this. Distant galaxies have defined arms and structures to admire. The farther you peer into dark skies and deep space, the more stars that appear from farther and farther distances. For anyone who has a love for the farther reaches of space, this telescope has the chops to reveal them. The Sky-Watcher Explorer-200P is quite striking with its blue tube, EQ5 mount and sturdy tripod with stainless steel tubular legs. However, it’s important to keep in mind that reflector telescopes require occasional collimation (alignment of the mirrors) to maintain optimal performance. Mount type

The Sky-Watcher 200P Telescope comes with a set of accessories that are designed to enhance your stargazing experience.For those interested in astrophotography, a more advanced mount and telescope combination may be necessary.