Entries tagged as astronomy

Stargazing in Naju

Taking star trail photos got a bit easier

With my company's relocation, I've moved from Suwon to Naju. This city is about 300km south of Seoul, and has less than 100 thousand inhabitants. So the night sky is somewhat more favourable to stargazing. It isn't a dramatic improvement, but I'm happy to be able to continue doing astrophotography. To celebrate the arrival, I did a 10-minute exposure just outside the apartment window. The star trails came out nicely.

Andromeda Galaxy gets better, too

The following night, I tried taking a photo of the Andromeda Galaxy. It was to be expected, but the background had less light, in spite of the Moon shining brightly nearby. The resulting photo came out looking better than anything I've tried in Suwon. I have some high hopes for taking some good photos during the new Moon phase. But for now, I'm hoping to get some good view of the lunar eclipse happening in two days.

Device: Canon SX50 HS
Settings #1: 24mm (17% size) - ISO 80 - 600s - f/3.4
Settings #2: 263mm (26% size) - ISO 160 - 300s - f/5.6
Filters: None
Time #1: 2014-10-05 01:25 KST
Time #2: 2014-10-05 23:35 KST
Location: Naju, Korea
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Standing on the Prime Meridian

The line that separates east and west

I'm visiting the Royal Observatory Greenwich, where the Greenwich Meridian is located. It became the Prime Meridian (0° longitude) 130 years ago, in 1884.

I've visited this place before, but it feels fresh every time. Maybe it's because I come here every decade or so.

Stepping on the line

Bode's & Cigar Galaxies, 2nd try

Bode's Galaxy (left) and Cigar Galaxy (right) look clearer

On the second attempt to photograph Bode's Galaxy (M81) and Cigar Galaxy (M82), I managed to put the lens hood on. The sky itself wasn't really darker - in fact, quarter moon was up in the sky - but this seem to have reduced the background red glare from the street lights. I should have thought of this sooner.

Anyways, the images now have blacker background, making the galaxies look more clear and natural. Taking multiple shots and stacking them improved the looks even further. Click on the image to see the version in original resolution.

Device: Canon SX50 HS
Settings: 484mm (70% size) - ISO 100 - 300s - f/5.6
Filters: None
Time: 2014-05-06 23:29 to 2014-05-07 00:15 KST
Location: Suwon, Korea
8 photos stacked with RegiStax 6.1.0.8

Saturn near opposition

Getting a good picture of Saturn

May of this year is a good time to photograph Saturn. The opposition happens on 3AM, May 11, with the closest approach to Earth happening very close to that. This means that Saturn looks the biggest and brightest compared to other times of the year. The weather forecast says that the night of the opposition may be cloudy or rainy, so I took photos last night instead.

Device: Canon SX50 HS
Settings: 1200mm (2x Digital Teleconverter) - ISO 160 - 1/50s - f/6.5
Filters: None
Time: 2014-05-06 02:32 KST
Location: Suwon, Korea
31 photos stacked with RegiStax 6.1.0.8
Defined tags for this entry: , , ,

Bode's Galaxy M81 & Cigar Galaxy M82

Bode's Galaxy (top left) and Cigar Galaxy (bottom right)

Using the iOptron SkyTracker equatorial mount, tracking the galaxies for photographing became somewhat better, despite a murky city sky. While photographing Vesta and Ceres, I also pointed the camera to where Bode's Galaxy (Messier 81) and Cigar Galaxy (Messier 82) were located just below constellation Ursa Major. Although they were fairly dim (magnitude 6.9 and 8.4, respectively), I hoped that it would at least show up in the picture faintly.

After much fiddling with the camera settings and post-processing, the best result I got out of it is the one you see here. Both galaxies' shapes are recognizable, despite this being just a single-frame 5-minute exposure. When the weather becomes favourable again, I'll attempt multiple shots with the same camera settings and see if this will help out further.

Device: Canon SX50 HS
Settings: 484mm (80% size) - ISO 100 - 300s - f/5.6
Filters: None
Time: 2014-04-25 00:40 KST
Location: Suwon, Korea

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