We've picked out the best space tech Prime Day deals still available as star projectors, drones, model rockets and Lego sets are still discounted.

The 51mm model, in particular, is available for just $609, having previously been marked at $1,099 which is a staggering 45% off. This deal is available in all sizes (42, 45, and 51mm) but the biggest discounts are on the biggest size.

They discounted dozens of products and saw great success — so much success, they doubled it to two days. Then four days. And now, it's no longer just Amazon Prime Day — it's the biggest sales week of the entire summer,

Amazon Prime Day ends today so if you are after any skywatching or astrophotography gear, we have you covered. If you want super portable optics for stargazing, check out our best Prime Day binoculars round-up but for all the deals we have found across optics, tech and entertainment, check our Amazon Prime Day hub.

Maybe the best deal currently ongoing is for the SanDisk portable SSD that is a true benchmark in the world of external storage. No matter if you need 1TB, 2TB, or even 4TB, all are now available at a discount of about 40%. As an example, t he 2TB variant is selling for just $126, down from its usual price of $209.