Entries tagged as satellite

Total lunar eclipse of 2018 (Super Blue Blood Moon)

25-photo composite of the 31 January 2018 total lunar eclipse (16% size)

The first total lunar eclipse of this year was an interesting one in that it was a so-called "Super Blue Blood Moon". The visible size is the largest, so it's a Supermoon. It's the second full Moon of the month, so it's a Blue Moon. The Moon hidden behind the Earth's shadow during the eclipse looks reddish, so it's a Blood Moon. This was the first such occurrence seen in Korea since December 1982, so it's not common.

The sky was pretty cloudy all the way to the late evening yesterday, so I had nearly given up on seeing it. But I was in luck and the clouds had started clearing up soon after the eclipse had started. So I hurriedly got my Sony camera and a tripod out to catch the event. It had only half a charge left, but I managed to photograph the progress for two hours, including the deepest point occurring around 22:29. I think it turned out fine - here's the composite photo showing the progress of the eclipse in 5-minute interval.

Device: Sony A5000 + SELP1650 (E PZ 16โ€“50 mm F3.5โ€“5.6 OSS)
Settings: 50mm - ISO 100 - 2s - f/5.6
Filters: None
Time: 2018-01-31 21:40-23:40 KST
Location: Naju, Korea
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Moon-Mars-Venus conjunction of 2017

Moon, Mars, and Venus line up in the western sky

As I dropped by Gwangju to catch a movie (I'll be posting a comic tomorrow), the western sky was adorned with an alignment of some of the bright bodies of the solar system as seen from the Earth - the Moon, Mars, and Venus. The occurrence was relatively well-publicized, but I forgot to carry a dedicated camera tonight. Luckily, the telephoto lens of the iPhone 7 Plus pulled through and I was able to capture this sight over the neighbourhood just before Venus dropped behind the buildings.

Device: iPhone 7 Plus
Settings: 56mm - ISO 1000 - 1/12s - f/2.8
Filters: None
Time: 2017-02-01 21:12 KST
Location: Gwangju, Korea
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Supermoon 2016 captured on iPhone 7 Plus

Supermoon on Nov. 15, 2016
Much has been talked about this year's so-called Supermoon owing to the fact that it's the largest since January 26, 1948 and won't be surpassed until November 25, 2034. Closest approach was made on 22:52 KST on November 14 at a distance of 356,509km, about 28,000km closer than average. The resulting difference is hardly noticeable to the naked eye, but is nevertheless a nice occasion to look at the Moon again. Sadly, heavy clouds hid the Moon entirely at that time, so I saw the Moon the next evening, about 20 hours later and used the telephoto lens on the iPhone 7 Plus to take a photo of it. This is perhaps the most detailed shot of the Moon taken using only an iPhone's native camera module.

Device: iPhone 7 Plus
Settings: 56mm - ISO 20 - 1/60s - f/2.8
Filters: None
Time: 2016-11-15 19:06 KST
Location: Naju, Korea
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The streak of Iridium 60's flare

Iridium 60 in the northern sky on August 30, 2016 (14% size)

It's been more than two years since I talked about satellite flares here, but I now have something to show you. As you can see, I had a camera successfully capture the flares coming from an Iridium satellite for the first time. Past efforts used iPhones because I was focused in capturing the motion of the flares. In this photo, the ever-growing Naju Bitgaram City provided a colourful backdrop.

Device: Sony A5000 + SELP1650 (E PZ 16โ€“50 mm F3.5โ€“5.6 OSS)
Settings: 24mm - ISO 400 - 20s - f/4.5
Filters: None
Time: 2016-08-30 05:06 KST
Location: Naju, Korea
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Watching ISS with telescope, 2nd try

International Space Station observed on July 30, 2016
ISS pass, animated

When you try to keep up with fast-moving objects with the manual control of the telescope motors, the lack of fine-grained steps become a big limitation. Speed 6 moves at about 0.267 degrees/second and 7 at 1 degree/second, while the International Space Station moves at a speed that is somewhere in between, depending on the distance. To alleviate this slightly, practice and preparation were needed. I fixed the finder scope misalignment and added a camera mount to the telescope. iPhone 6 Plus was placed on the mount to act as a secondary finder scope, much like what I did on my Canon SX50 HS camera three years ago. These made it much easier to have the telescope point at the International Space Station.

As a result, I managed to photograph about 220 frames of the station in two minutes this time, enough to show the movement like the one I did with the old camera two years ago when I came to Naju. The space station was farther away and a lot dimmer (504km vs 685km, -3.5 mag vs -1.6 mag at culmination) than the previous attempt with the telescope, meaning less details. Even so, I think I was able to identify the SpaceX Dragon spacecraft that went up for the CRS-9 mission, which was attached to the bottom of the Harmony module just ten days before.

Telescope: Celestron NexStar 6SE + X-Cel LX 9mm eyepiece
Device: iPhone 6S Plus (afocal)
Settings: 29mm - ISO 720 - 1/1400s - f/2.2
Filters: None
Date: 2016-07-30 KST
Location: Naju, Korea
Stacked with PIPP 2.5.6 and RegiStax

Photos: 10 / 9 / 12 / 6 / 9 / 12 / 28 / 4 / 10 / 14 / 8
Time: 20:18:58 / 20:19:07 / 20:19:12 / 20:19:26 / 20:19:39 / 20:19:41 / 20:19:45 / 20:19:50 / 20:19:58 / 20:20:06 / 20:20:12

Copyright (C) 1996-2016 Wesley Woo-Duk Hwang-Chung. All rights reserved.