u/TheSecretGame24

So for some reason, the night mode from my Xiaomi Redmi Note 14 5G didn't exactly see the same detaili, so I used my Samsung Galaxy S10+ in Night mode because I didn't have a tripod and other proper tools for this. And this was from an unplanned trip so I didn't really have time to set up something that I can capture nicely so this is basically the best I can currently get.

I couldn't manually trace Centaurus due to it being very difficult to see, but I was able to name some stars from Centaurus and circled them. I also manually edited the 3rd image so we have a higher contrast and sharper image in the 3rd one so you can see even the smallest details of the constellations. The Musca constellation is very difficult to see in the 3rd photo too, so manually editing the photo should make it easier to see too.

1st image is the original, 2nd image is edited by my Xiaomi Redmi Note 14 5G photo editor (because apparently, you can't get straight lines in the Samsung gallery editor), and 3rd image is basically the 2nd image edited by Samsung image editor by increasing the contrast, highlights, and more to pull out the hidden details.

Shot from my Samsung Galaxy S10+

Camera settings:

Camera: 12mp 1x Main 26mm (variable F1.5-2.4)

Resolution: 4032x3024

Aperture: F1.5

ISO: 3200

Shutter speed: 1/3

Mode: Night mode (5s exposure)

Ev: 0.0

Color temperature: Can't tell (not shown in EXIF data)

Time: 05/03/2026, 6:25 PM, Philippines

So it's my first time building my DIY speaker system, but this looks like a 2.1 system even though it's technically mono.

I have 2 sattelites (with unknown RMS/peak), and a 10" "sub-woofer" from BEAC that someone gave to me and a custom made plywood ported enclosure, so I ordered a 100w class D amplifier from Lazada, but I thought it was going to be stereo (apparently, I forgot to read labels and ordered a wrong one).

I did accidentally break the FM radio wire and 220v port and accidentally short circuited that part, and it 220v input doesn't work anymore, and I don't have soldering iron and tools to troubleshoot it. I also unfortunately didn't have insurance, so I can't get a replacement for the amplifier.

But I didn't want to waste the amplifier to my setup, so I tested the 12-24v input, and it worked. I didn't have a 12/24v power supply, but I did have a vacuum cleaner battery (22.2v, 2200mah, 48.84wh) with a built in 26v barrel input charging and BMS and connected it to my amplifier to power it. After that, I connected the wires (see wiring diagram for reference and speaker information). Works perfectly fine so far despite only using electrical tape and wire twisting on the copper.

Everything seemed to work so far. Not that much distortion at max volume, battery lasts for about 6-8 hours at moderate volume (estimated), and no weird burning smell or magic smoke somehow. The 6.5" woofers from the sattelites seemed to work well with the 10" woofer and there's pretty much no distortion or clipping. And somehow, no phase cancelation at all (can't hear any) and bass is somehow balanced (quite punchy and tight, but not too boomy either despite the ports).

Lowest effective frequency is around 40-45hz (down to 20hz can be heard though, but it's probably mostly harmonic distortion), highs are loud and "shouty" (no clipping somehow).

Long summary:

Lowest frequency:

20hz (40-45hz effective)

Hightest frequency:

20khz (estimated, can't hear above 15-16khz)

Amplifier power:

100w (Unsure if it's RMS or Peak in the amplifier)

Amplifier type:

Class D (4-8Ω rated)

Bluetooth:

Yes (5.0 SBC)

FM radio:

Yes (Currently faulty due to the broken wire)

Input type:

RCA (L/R channels, stereo)

Output: Mono (1 woofer channel + 1 tweeter channel only)

Battery:

Anko VC101 (22.2v, 2200mah, 48.84wh)

10" woofer:

BEAC "sub-woofer" BS-W2000 4Ω 380w peak (connected in series with the 6.5" woofers that are connected in parallel), 35hz-4khz rated, 92 sensitivity (according to the packaging, not sure if it's actually true)

6.5" woofer/s:

Unknown brand and power (rated 8Ω, connected in parallel, then connected in series with the 10" woofer)

2.5" tweeters:

Unknown brand and power (rated 8Ω, connected in parallel to the tweeter channel in the amplifier, with HPF capacitors)

10" enclosure:

42x42x34cm plywood enclosure, 2cm thick all sides, 4 cm thick at the driver area. 10cm diameter port, 16cm long, PikNik can used + rubber seal.

6.5" enclosure:

35x20x20cm wooden enclosure (probably made out of MDF), 4x3x3 port (square type), shares the same enclosure as the 2.5" tweeters, modified (seperated and disconnected the tweeters that connect to the 6.5" woofers in parallel).

Battery life:

6-8h at 40% volume (estimated, real conditions showed 5h+ straight playtime in 40% volume without getting on low battery yet).

Max volume:

102-111 dB (estimated, don't have a dB meter)

So I've taken and had this photo during our random 2 hour trip in a place with not that much light pollution here in the Philippines. I took this shot on the floor using my phone and I realized I have captured a huge portion of the night sky and I never expected for my phone to somehow capture something like this so clearly, so I got curious on knowing what are the things I have captured. I've tried using astrometry net and it failed to properly detect the stars and constellations in my images, so I manually used Stellarium and Star Walk 2 as my references and tried to get a 1:1 copy and label the things that I have captured.

So anyways guys, are my labelings and line traces correct in my photo?

Other details:

Time taken: March 15, 2026 at 7:22 PM (UTC+8:00)

Place Taken: (coordinates in the images)

Camera: Xiaomi Redmi Note 14 5G (main 108mp camera)

Zoom: 1x wide 24mm

Mode: Pro (local camera in phone)

Focus: Manual (estimated around 0.7-0.8 due to it not having numbers)

Color Temperature: 4000k

Aperture: f1.7

ISO: 1600

Shutter speed (Exposure): 20s (500/24mm = ~20.8s rule)

Original image resolution: 9000x12000 (108mp)

RAW: N/A (not supported in the Xiaomi Redmi Note 14 5G)

Stacked: N/A (single image only)

Processed: Yes (Phone ISP only)

Tripod: None (I just place my phone on the floor on a rock and a place with no light pollution, set a 5s timer, and then run away and wait for 20s for the shutter to finish before getting my phone back)

App references: Star Walk 2 and Stellarium (Mostly Stellarium)