Celestron - PowerTank Glow 5000 - Portable USB Rechargeable Power Bank + Red Flashlight - 5000 mAh Capacity – The Best Astronomy Flashlight - Must-Have 2-in-1 Accessory for Amateur Astronomers (93585)

I purchased this item despite the many negative reviews, and I don't regret the purchase at all. There are some facts you should be aware of when purchasing this light.1) This is the most basic understanding anyone should have when purchasing any modern product. No process is perfect, and sometimes what you get is imperfect or DOA. It did not happen to me in this particular instance, but it may happen to you regardless of how much you have spent on a product, or its country of origin.2) This is not a "cheaply made" product. The bulk of it is thick plastic, but some of the other mechanisms are thinner. Two plastic clips lock the front cap in place, and the lens is firmly adhered into the cap. It's unlikely that the lens would pop out unless the unit was mishandled in a rather extreme way. I don't see the lens popping out while the cap is fixed to the unit, simply because the portal at the front of the cap is much smaller than the lens. Outside of smashing the lens, that lens is not coming out of the front of the cap. It's equally unlikely that the lens popped out through the rear of the cap because of adhesives, and two pieces of plastic that bar its passage. Outside of errors during multiple stages of production, mishandling on the part of the courier, or mishandling on the part of the user, I don't see how the lens or front cap could be just falling off as others have claimed.3) Another user complained that the switch could only turn the unit on/off and would not dim. I saw how this could occur, and it stems from the odd design of the unit. Inside the plastic shell is a circuit board, on top of which lay the two LEDs with a 9V battery at the very end like a caboose. It is simple to replicate the dimming issue if you do not replace the circuit board assembly as directed in the instructions(during, say, a battery change). The circuit board is meant to lay on a tiny spacer, and if it is slipped underneath the spacer, the dimming mechanism will not work properly. To prevent or fix this issue, simply follow the manufacturer provided directions to remove the interior assembly, and when you try to insert it back make sure to hold the assembly as close to the top of the unit as possible. You will know that you have the correct alignment by the function of the light switch, and the presence of a small space underneath the circuit board. My dimmer switch worked perfectly at the beginning, but I was able to replicate and fix this issue as previously described. It should be noted, that if you do not insert the interior assembly exactly as it extracts, it may fail to extract itself using the light switch in the future. Again, this stems from its odd design.To conclude, this is a well-functioning, and cost-effective unit. It performs exactly as described, is well manufactured, and its plastic shell is surprisingly rugged. The design is odd, and a couple of quirks arise from that, but reading the instructions and handling it correctly will prevent most issues with the unit. So, $12 altogether was a fair price.

Bought this for when I need to get up in the middle of the night to use the restroom. I sleep in pitch black to protect my melatonin levels. Red light doesn't affect melatonin level like regular light so I can easily go right back to deep sleep. Has made a big difference in sleep quality. The squared body keeps it from rolling off my nightstand. The on/off switch (a dial) is also a dimmer, easy to brightness control.

Reading the other reviews it would seem that many people bought this to see at night, but more so for mobility than what it was meant for - looking at star charts and changing eyepieces/equipment. THIS IS FOR ASTRONOMY. If you want a red light to walk around at night then buy something else.Now, to review this as an astronomy accessory:Ruining your nightvision because of white light, or even red light that is too bright, causes you a lot of extra observing time trying to let your eyes reacclimate. Also, NO ONE wants to see a white light (whether by accident or not) at a star party, which happens too often because some people have dual white/red flashlights.The Celestron Night Vision Flashlight does exactly what an astronomer wants it to do - produce variable red light that can be easily adjusted by the astronomer. Nothing more. (literally) Nothing less.The battery is EASY to replace if you have a modicum of patience!Yes, the 2 red LED's are not properly diffused, so the light pattern sucks. BUT, that is so easily remedied as to almost not necessitating talking about it. All you need to do is grab some scotch tape (not clear - use the type that has a "soft white" look to it), put it on top of the glass, and use an exacto knife to cut around the edges. Bingo! Absolutely perfect. After the diffuser is added, this light produces the perfect, round, soft, red pattern that you need to be able to read star charts. It took me less than 5 minutes.It could be built of metal, instead of plastic, so it is not super durable, but that and needing to make a diffuser are why I dropped it from 5* to 4*. All Celestron really needs to do is add a diffuser to the flashlight (rather than the customer) and it'd be perfect

This product has some pros can cons which I will list here but the pros far outshine the cons.Pros:- It shines a red light so your night vision doesn't get ruined and if, like me, you use it to read before bed, it makes for a very smooth transition to sleep.- The BATTERY IS AWESOME. I've used this every night for more than 2 years now and the battery is still great. It recharges quickly and every charge lasts a long time (note that I almost always use the lowest light setting).Cons:- The little plastic cover over the Input port broke off very soon after purchase. I mostly use this only indoors so I don't really have to worry about the uncovered port getting damaged.- It takes practice to figure out where the on/off switch is in the dark; would love to see this improved.- It is a pretty bright light even at the lowest setting. I put a lightweight sock over it to dim it a bit. Would love to see this improved.- At times when I've thrown it in a pack, I've found that it's turned itself on. Ironic: hard to find the switch when you want it, but when thrown in with other items, it's very easy for it to be triggered.- It would be nice to have the brightness setting and on/off switch separate - you have to cycle through all the settings each time you are turning the light on or off.Although my cons list is more numerous than the pros, the pros still outweigh the cons and I highly recommend this flashlight.

Used this light for night navigation on the boat, excellent piece of kit. I don't know how robust it is though; personal opinion is it's a bit overpriced, however would recommend if nightvision is important and you don't want to flood an area with light.

Articolo arrivato perfettamente imballato e con batteria, pronta all'uso.Luce rossa regolabile, con bracciale per appenderla al collo o altro supporto, utilissima per preparare osservazioni astronomiche.

Small size. UFO watching. Using for map reading.

Utile mais en revanche éclairage(rouge) vraiment faible même avec la molette à fond, à voir en changeant la pile...

La luz roja es modulable, usa batería de 9V así que no tienes que preocuparte por aprender a cambiarla; el único inconveniente es que la carcaza parece un poco frágil, fuera de ello muy recomendable