Entries tagged as A1524

Jupiter photo from iPhone's video shoot

Processed image of Jupiter from an iPhone 6 Plus video recording

Lots of planetary photos from amateur astronomers seem to be derived from a small video camera attached to the telescope. I do have lots of smartphones that could serve a similar purpose, so decided to make use of them instead. Holding it steady in front of the eyepiece was a problem, as evidenced by my earlier attempt, so some sort of an adapter was needed.

Attaching iPhone 6 Plus to Celestron telescope with Snapzoom adapter

This is where Snapzoom digiscoping adapter came in. I originally bought this several months ago to photograph stars using binoculars, but it could be made to work with telescopes by attaching an included weight. After lots of paddings here and there, my iPhone 6 Plus was able to fit into the adapter and work with the eyepieces that I owned.

Once my NexStar 6SE telescope was aligned with the stars so that I could track any celestial objects, I slid the phone-adapter-eyepiece assembly into the telescope and began looking at Jupiter and the Moon, the biggest targets.


And this is how Jupiter showed up on the screen. The bands and the Great Red Spot were faintly visible, just as I saw with my naked eyes. The shakiness due to the atmospheric turbulence was also quite apparent. I recorded the sight for two minutes and processed the resulting video through PIPP. Finally, the processed video was stacked and sharpened with RegiStax. The final result, as you saw at the beginning, has a more "natural" feel than the ones from SX50 HS for some reason.

Telescope: Celestron NexStar 6SE + 5mm eyepiece
Device: iPhone 6 Plus (afocal)
Settings: 29mm - 1920x1080 - 30fps - f/2.2
Filters: None
Time: 2015-04-27 21:57-59 KST
Location: Naju, Korea
300 frames stacked with RegiStax 6.1.0.8

A quirk with SKT VoLTE on iPhone 6 Plus

For the past two weeks, I've been having a strange problem when attempting to place calls with my iPhone 6 Plus. Many of the phone numbers that I know for sure exist would be met with "the number you dialed is not in service". If I switch the "Enable LTE" option in Settings app to "Data Only" instead of "Voice & Data", the phone calls would go through just fine. So it had to be an issue with VoLTE.

I first contacted my carrier, SK Telecom, to see if this was a problem at its end. But nothing turned up and I was eventually advised to contact Apple instead. Sure enough, colleagues using iPhone 6 on the same carrier did not have the problem. Digging deeper, I discovered that the problem did not occur only if I had country code prefix (e.g. +82 for Korea) on the phone number. So while +82-10-xxxx-yyyy would work, 010-xxxx-yyyy wouldn't.

Seeing that it might be some sort of a weird software issue, I contacted Apple support about this. Unfortunately, no clear solution came up, either. As a last resort, I was told to do a complete factory reset and see if that helped. As the troubleshooting was reaching a dead-end, I got a carrier settings update as I opened up the "About" page in Settings app. It updated the carrier settings from SK Telecom 18.x to 19.1. I told the support that I'd see if this update did anything, and if not, I might try the factory reset.

I attempted several calls to various places with the VoLTE setting on, and I saw that all of the calls now made through regardless of the country code prefix. The update apparently fixed the problem. It was indeed a software problem, but it was somewhat caused and fixed by the carrier. I reported this success to Apple support.
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First Saturn sighting of the year

Saturn taken with SX50 HS (left) and iPhone 6 Plus (right)

As Saturn now rises before midnight, it becomes possible to see the planet well above the horizon before it disappears into the morning sky. Seeing that the weather was getting good, I decided to wake up early and see it for myself for the first time this year. I bought a new Celestron NexStar 6SE telescope some time ago and I could use it to pick it out of the southern sky with relative ease.

Unfortunately, one of the collimator screws on the telescope is stuck, preventing full calibration. I attached my DSLR to take some photos, but it did not come out well. So instead, I made a couple of quick shots using my iPhone 6 Plus through the eyepiece, which for some reason came out looking slightly better.

Not to waste the opportunity, I then took out my SX50 HS and photographed Saturn as I've done since two years ago. The result was the best the camera has produced so far, I think.

[Left]
Device: Canon SX50 HS
Settings: 1200mm (2x enlarged) - ISO 160 - 1/30s - f/6.5
Filters: None
Time: 2015-03-23 05:35 KST
Location: Naju, Korea
20 photos stacked with RegiStax 6.1.0.8

[Right]
Telescope: Celestron NexStar 6SE + 25mm eyepiece + 2.5x barlow
Device: iPhone 6 Plus (afocal)
Settings: 29mm - ISO 125 - 1/10s - f/2.2
Filters: None
Time: 2015-03-23 06:02 KST
Location: Naju, Korea

Moon and Venus, together

Venus shines on top of the crescent Moon at Bitgaram City

When Venus is visible in the evening sky, a crescent Moon can be found nearby roughly once a month in the west. The clouds and fogs cleared up yesterday evening, and I was able to see the two objects above the unfinished skyline of Naju Bitgaram City. A yellowish layer of smog is seen lingering on the horizon in the photo, but this was gone by the morning.

Device: iPhone 6 Plus
Settings: 29mm - ISO 500 - 1/4s - f/2.2
Filters: None
Time: 2015-03-22 19:29 KST
Location: Naju, Korea
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Cleaning iPhone 6 Plus rear(back) camera

Removing the display assembly is the first step to most iPhone 6 Plus tinkerings

Rear camera on iPhones doesn't seem to have any gaps for dust to get in, but for some reason it gets in on rare occasions. You could take the phone to an authorized service center for either cleaning or refurbishment, or if that's not a viable option like my case, you could do the cleaning yourself.

To do that, you need to first open up the phone and separate the display assembly from the rest of the phone. The cables connecting the two are held by five screws and a cover plate, so once you take them out, the four cables can be popped off with a spudger.

Remove the cover plate to pull out the rear camera

To access the rear (back) camera, you need to remove two screws that hold the cover plate for the camera on the top right area of the phone. The screw on the left is obscured by a black pad, so you need to lift it slightly with something like a flathead screwdriver while you unscrew. The cover plate may not completely become loose, but it does not need to be.
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