Add these up before deciding what tube you can afford, not after.
The collimation tool, if there are mirrors
Without it a reflector performs like a smaller telescope and nobody can tell. This is not optional on a Newtonian or a Dobsonian.
A low-power eyepiece with a wide field
The one that finds things. Supplied eyepieces are usually adequate at the long end, but a wide field here changes how the whole instrument feels.
A red torch judged on its minimum
Not its maximum. Most torches sold for astronomy are far too bright at their lowest setting, and this is the specification to compare.
A planisphere or a chart
Because a telescope points at what you can already find, and the finding is the skill.
A dew shield, on a refractor or folded tube
Free performance on most nights, and the difference between an evening that ends at ten and one that ends when you decide.
And the chair, sooner than you think
It is the purchase experienced observers name most and beginners skip. A seated observer sees detail a standing one does not.
The questions that keep arriving
Is the supplied eyepiece good enough?
The long one usually is, for a while. The short one supplied with inexpensive telescopes very often is not, and it is the one that produces the disappointing first night.
What can genuinely wait?
Filters beyond a broadband nebula filter, a second Barlow, a camera of any kind, and anything bought to fix a problem you have not yet had.
Last reviewed 17 September 2026