Skywatcher Evostar 72ED Refractor
A 72mm ED doublet apochromat at 420mm focal length, f/5.8. Light enough to sit on a small mount without complaint, and short enough to frame large nebulae. Doubles as a guidescope and as a grab-and-go visual instrument.
Recommended constantly, for unglamorous reasons
The Evostar 72ED appears in more "first serious telescope" recommendations than almost anything else, and the reasons are all practical. Seventy-two millimetres at 420mm focal length, f/5.8, using an air-spaced doublet with an ED element, and a tube weighing around two kilograms.
That combination lands somewhere useful. 420mm frames most large nebulae comfortably on a small sensor. f/5.8 gathers signal well without demanding the tolerances a faster system does. Two kilograms sits within the comfortable range of even modest mounts, so the mount you already own can probably carry it. The Monkey Head from Al Qudra is this telescope's work, through the L-eXtreme.
Doublet rather than triplet
Two elements instead of three means less glass, less weight, lower cost and slightly less complete colour correction. At f/5.8 a good ED doublet controls false colour well enough that it is not the limiting factor in a deep-sky image, with any residual showing first around bright stars. The money not spent on a third element is money available for the mount, which will affect your results more.
What you will want alongside it
A field flattener, which is the part that catches people out. A fast doublet does not deliver a flat field to the corners on its own, and stars towards the edges elongate without one. It is an extra purchase and it changes the backfocus arithmetic, so plan the filter drawer spacing around it at the same time.
The supplied focuser is a 2 inch dual-speed Crayford with 10:1 fine focus, genuinely good at this price, and it takes the EAF without complaint. At 420mm and two kilograms it also makes a capable guidescope and a pleasant grab-and-go visual instrument, and a scope with three uses is easier to justify than one with a single purpose.
Getting one in the UAE
Mine came from Amazon.ae, which makes this one of the easier telescopes to acquire here: local stock, local delivery, no forwarder and no import charges. For a telescope that is a real advantage, since shipping something this size and weight internationally can add a substantial fraction of its price.