For one thing, a 2” eyepiece, which often weighs more than a pound, is outlandishly heavy compared to the telescope itself (which weighs only about 8 lbs), and can cause balance or even stability problems if the Skymax 127 is used on a lightweight mount. While a 2” visual back and a 2” star diagonal are provided with the Skymax 127, this telescope absolutely cannot support the use of 2” eyepieces. And since the secondary mirror on the Skymax 127 is fixed in place, as with all Maksutov-Cassegrains, there’s simply no need-or ability-to collimate it, but a set of screws on the back of the scope can be adjusted to align the rear cell of the telescope with the primary and secondary mirrors if you absolutely need to.
In larger telescopes, this can cause the image to “shift” and appear to wobble as you focus, but the Skymax 127’s primary mirror is so small and lightweight that this issue doesn’t usually occur. Focusing with the Skymax 127 is accomplished by turning a knob on the back to move the primary mirror along a rod back and forth up the tube.
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