How does the Skymax 200DX compare with the Skymax 180?
The Skymax 200DX gathers about 23% more light than the 180mm Skymax 180. Its 2000mm focal length at f/10 is shorter and faster than the 2700mm at f/15 of the Skymax 180, giving a wider field of view and shorter exposures, and its 44mm image height is designed for imaging with large sensors.
Can I use the Skymax 200DX for deep-sky astrophotography?
Yes. With a 44mm image height it covers full-frame sensors at its native f/10. For shorter exposures, the optional Skymax 200DX 0.7x Reducer (S20224) brings it to 1400mm at f/7 with a 43mm image circle and 55mm of back focus.
What mount do I need for the Skymax 200DX?
The optical tube weighs 12 kg (26.46 lbs) and mounts with a D-style dovetail plate. For visual use and especially for imaging, choose a solid equatorial mount with a D-style (Losmandy-style) saddle and generous payload headroom, such as a mount in the Sky-Watcher EQ6-R class.
What is the cooling fan for, and how is it powered?
Large closed-tube telescopes take time to cool to the night air, and until they do, tube currents soften the image. The built-in 12V fan and cooling vents speed up this process. The Skymax 200DX includes a battery pack to power the fan.
How large is the central obstruction?
The secondary mirror is 70mm in diameter, and the total central obstruction is 22% by area.
Can I use 2-inch eyepieces and diagonals?
Yes. The Skymax 200DX includes a 2-inch visual back, so you can use 2-inch diagonals and eyepieces, as well as 1.25-inch accessories with a suitable adapter. A camera extender adapter is also included for imaging.