| Eyepieces, filters, Barlows |
Buy in October |
Discount rates match November, the items are cheap enough that the difference is trivial, and having them on hand improves every session from October onward. |
| Smart telescopes |
Buy in October |
The most competitive category in astronomy right now, and Prime events are where brands push hardest. October cuts are frequently as deep as November cuts. |
| Beginner refractors and tabletop Dobs |
Buy in October |
These are the models that sell out before Christmas. Buying now means choosing from full stock rather than from what is left in December. |
| Binoculars |
Buy in October |
Same discount depth either way, and binoculars are the single best autumn purchase on this list — they suit the season better than any telescope. |
| Mid-range GoTo telescopes |
Either — lean October |
Discount percentages are close between the events. October wins on stock and on the weeks of use you gain; November wins slightly on price. |
| Large Dobsonians (8-inch and up) |
Either — take a real cut if you see one |
Discounts are inconsistent at both events. If a genuine reduction appears in October, take it; waiting seven weeks for an uncertain one is not a strategy. |
| Large Schmidt-Cassegrains |
Wait for November |
The clearest case on this page. These instruments see their deepest annual cuts during Black Friday week, and the extra discount usually exceeds anything October offers. |
| Premium equatorial mounts |
Wait for November |
Heavy, expensive, and usually bought as part of a planned imaging setup rather than on impulse. Neither event cuts them dramatically, but November cuts them more. |
| Astrophotography cameras |
Wait for November |
The electronics-heavy end of the hobby follows consumer-electronics discount cycles more than telescope cycles, and that cycle peaks in late November. |