Entries tagged as Saturn

Testing out Nikon CoolPix P1000 with Saturn

Nikon CoolPix P1000 with its zoom lens fully extended

One of the reasons why I like superzoom cameras is because it can act as a portable telescope-camera bundle. I could do astrophotography without hauling a heavy telescope. This is why I bought a Canon PowerShot SX50 HS back in 2013 that had 50x optical zoom. Canon didn't bother extending the zoom beyond 65x (SX60 HS) but Nikon kept pushing, with P900 doing 83x zoom. And now, Nikon created a monstrosity that is P1000. It can do 125x optical zoom (24 to 3000mm, 35mm equivalent) and 4K video recording on a 16-megapixel sensor. I knew I had to get it.

Saturn: SX50 HS vs. P1000

Naturally, I wanted to see how much larger the planets would show up on the P1000 compared to the SX50 HS. The result from the P1000 was obtained with a few quick shots that I made during a session where I was getting familiar with manual focusing operation. The one from the SX50 HS I put in here for comparison was made in 2013.

Needless to say, the two cameras' zoom capabilities are worlds apart. I have high hopes with the new camera.

Device: Nikon P1000
Settings: 3000mm - ISO 200 - 1/30s - f/8
Filters: None
Time: 2018-10-02 19:40 - 20:01 KST
Location: Naju, Korea
7 photos processed with PIPP 2.5.9 and RegiStax 6.1.0.8
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Getting the telescope back on its feet

Jupiter and Saturn on April 8, 2018

It's been about two years since I did astrophotography with my Celestron telescope. When I finally took it out of storage to take the photos of ISS recently, I noticed that the shots weren't as clear as I expected. The same problem came up as I tried to take photos of the Orion Nebula yesterday, and I realized that the collimation of the telescope was significantly off. After about an hour of fiddling, the problem was fixed and I was able to see the bands of Jupiter and the Cassini Division on Saturn again. It looks like I'm good to go for the next few months of observation, including the closest approach of Mars on July 31. Here are the photos of the two planets in the order of original (from 4K 60fps recording), stacked, and wavelet processed results. Resolution was roughly 0.32"/pixel due to the iPhone X having slightly wider lens than iPhone 6S Plus.

The look of Jupiter before and after collimating the telescope


Telescope: Celestron NexStar 6SE + X-Cel LX 9mm eyepiece
Device: iPhone X (afocal)
Settings: 28mm - ISO 50 (Jupiter) / 250 (Saturn) - 1/60s - f/1.8
Filters: None
Date/Time: 2018-04-08 05:18 (Jupiter) / 05:30 (Saturn) KST
Location: Naju, Korea
100 (Jupiter) / 46 (Saturn) photos stacked with PIPP 2.5.6 and RegiStax 6.1.0.8

Looking out the window to see the Milky Way

The Milky Way Galaxy adorns the southern sky, atop the apartments (13.5% size)

A few hours after walking in the rain to see a movie yesterday, I was getting ready to sleep. Then I noticed that the sky was crystal clear, something I haven't seen in more than nearly two weeks (or three, in the night). Not to pass up this opportunity, I got my camera out. With so many stars visible, I wondered if the Milky Way Galaxy could be captured even with all the lights from the apartment buildings nearby.

After a few tries, it became clear that indeed it could be done, if somewhat faintly. Adjusting the levels, curves, and contrast brought out further details. Individual colour channels were untouched, yet the sky showed a very nice gradient. This may be an unintended affect of the light pollution near the horizon and I like how it turned out.

Device: Sony A5000 + SELP1650 (E PZ 16โ€“50 mm F3.5โ€“5.6 OSS)
Settings: 16mm - ISO 2000 - 20s - f/3.5
Filters: None
Time: 2016-07-08 00:44 KST
Location: Naju, Korea
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Saturn and its satellites

Rhea - Tethys - Saturn - Dione - Titan on June 15, 2016

I used the Opteka 2x teleconverter lens for astrophotography for the first time when I took another series of photos of the planets two days ago. This is supposed to be used with telephoto mirror lenses, but that's basically what my telescope is as well and I hoped it would be usable here. Test shots during the day came out alright, maintaining better contrast than the 2.5x Barlow lens I had been using. As you can see here, it performs reasonably well in the night, too.

I didn't originally intend to photograph the Saturnian satellites because they are quite dimmer than the Jovian ones. The four biggest Jovian satellites have apparent brightness in the magnitude 5 range, while the biggest and brightest Saturnian satellite, Titan, is around magnitude 8. The three largest after Titan are of magnitude 10. That's why I didn't take separate photos with longer exposure. Even so, post-processing the background area revealed the dim satellites. I noted their relative positions with the caption. Dione may be barely visible on on well-tuned screens.

Telescope: Celestron NexStar 6SE + Opteka 2x Teleconverter
Device: Sony A5000 (prime focus)
Settings: (3000mm) - ISO 100 - 1/3s - (f/10)
Filters: None
Time: 2016-06-15 00:12-00:13 KST
Location: Naju, Korea
26 photos stacked with PIPP 2.5.6 and RegiStax 6.1.0.8

Triple planet observation 2016

Photographing Mars out the window on a clear night

With a nearly perfect weather returning last night, I set out to point the telescope out the window once again. This time, I installed the Baader M&S filter as I planned last week. It was an excellent time to take photos of the planets - it was not only about 42 to 44 hours away from the closest approach of Mars in 2016, but Jupiter's Great Red Spot was in view. At this approach, Mars will be at its largest apparent diameter since November 20, 2005 and it won't be surpassed until June 19, 2018. For future reference, next closest approach will happen on July 31, 2018 and that itself won't be surpassed until the one in September 2035.

Jupiter, Saturn, and Mars observed on May 29 & 30, 2016

I planned just for Jupiter and Mars at first, but Saturn edged into the view at the left of the window after midnight. In the end I was able to take photos of all three planets in a single session similar to what I did a year ago, except that Venus was replaced with Mars. The filter did seem to work okay, giving me a better look at the clouds of Jupiter and the dark features of Mars.

Telescope: Celestron NexStar 6SE + X-Cel LX 9mm eyepiece
Device: iPhone 6S Plus (afocal)
Filters: Baader Moon & Skyglow
Location: Naju, Korea
Stacked with PIPP 2.5.6 and RegiStax 6.1.0.8

Jupiter (200 photos): 29mm - ISO 160 - 1/25s - f/2.2 @ 2016-05-29 21:54-21:56 KST
Saturn (200 photos): 29mm - ISO 250 - 1/15s - f/2.2 @ 2016-05-30 00:16-00:17 KST
Mars #1 (150 photos): 29mm - ISO 80 - 1/30s - f/2.2 @ 2016-05-29 22:02-22:03 KST
Mars #2 (300 photos): 29mm - ISO 50 - 1/40s - f/2.2 @ 2016-05-30 00:21-00:22 KST

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