Delivery was not delayed in anyway and speedy service.
Haven’t had time to use the Hubble artificial star yet however build quality does feel cheap admittedly then at that price point cannot really complain really and it serves a purpose.

I used this to help me assess the issues with my triplet. Unlike using an eyepiece or camera to test on real stars, this device made it very stable (no need for tracking) and free of atmospheric turbulence. The diffraction rings when slightly defocused were quite prominent, and even the smallest hole was usable in daylight! Being able to adjust your scope *before* you want to be up and running is definitely worthwhile.

I bought what is essentially a torch with holes in to help with rough/daytime collimations of my Celestron EdgeHD 8” after I installed some Bob’s Knob’s.

Needs 3 x AAA not supplied

I think it is ok for the price and seemed sturdy enough. The only criticism is that there is a mask that goes on the end of the torch to block 4 of the 5 light sources so that you only see one. The problem is that it is lightly magnetic and comes off way too easily. I can see it getting lost soon.

Anyway, worked nicely to collimate my scope during daytime so in that respect in works fine. The price is pretty good to compared to other artificial stars that are out there. Just lost a rating star for the cover unfortunately

The look and feel is pretty cheap. I'd like to think the money went in to the front plate and the accuracy of the holes. The magnetic plate that blocks out the 'stars' will get lost very quickly. And suggest you think of a replacement before it happens.

just arrived today
snowing
no opportunity to try it out
must get batteries

Looks a bit expensive for what it is but it does the job superbly.

This might well be one of the cheapest collimation aids around, and it is pretty basic to say the least. You need to be careful putting the batteries in for a start, and the little rectangle that blocks all but one star falls out all too easily. Nevertheless it is remarkably effective. I have QDSLRdashboard on my iPhone connected to my Nikon Z6, and focused my C6 SCT on the artificial star, and walked round the front of the scope to fiddle with Bob's knobs while I recentred the star with the hand control after each adjustment while viewing the star image at maximum mag on my phone. After some bad moves I got the hand of it and got my concentric rings well nailed down. All done it daytime. I did it outside on a bright afternoon which was sub-optimal, but I got it done. £20 is a bit steep given the quality. I'd have been happier at £5, maybe £10.

FLO have always been quick with delivery so top marks there. The Artificial Star has 5 different size holes in the lens and a supplied magnetic piece of tape covers over the 4 you don't require. The torch itself is plastic and on its own would be found in a pound shop, but if you want a higher spec unit they come in at +£70 so you pays your money etc. As it will only be used once in a while it does what it says on the tin and the rest of my Astronomy Group can make use of it as well, so money well spent.

I was very unpleasantly surprised when I held this item in my hand. Looked and felt like something I had just won at a fair on one of these toymachines for children.
It is terrible that this is sold at 19 £. Talking about a profit margin!

I bought this as I needed to give a talk on telescope collimation and it seemed easier to do it inside with a non-moving star than outside. Its a basic and functional tool that nicely emulates a star to aid checking optics when there are no convenient stars around. The tool proved its worth as the following night. i took out my 20 inch reflector as the clouds was clearing and found my I had left the laser switched on after the talk on and flattened the batteries. With no batteries to hand I used the Hubble Optics to star align the main mirror.
The blanking plate should be slightly more magnetic as it would be very easy to lose in the dark. In summary, cheap but functional.