Remembering Earth-that-was
Actually there’s another nebula, making three all together. The Orion Nebula proper, also known as M42, is the large spread wings brightness in the lower center. Separated from M42 by a narrow dark lane is the tear drop shape in the slightly left upper dead center, M43, apparently also known as “Mairan’s Nebula”. And finally in the upper third is the dimmer”Running Man” Nebula, in the top.
I’m getting better at this, but it is an incremental process.
The standard image of the Rosette Nebula is a glorious swirl of red gas sprinkled with a multitude of glittering stars. This, on the other hand, is a dim, noisy, dirty smudge covered with a multitude of oddly distorted spots. Still, it represents progress. My first attempts yielded nothing.
The Horsehead Nebula is a difficult object for purely visual observation, and I have never managed to actually see it. But amateur astronomy has advanced tremendously over the 30 years since my first telescope, especially astrophotography. This photo only shows the faintest blurry image of the Horsehead, but, as you can verify from the screenshot below, it’s the real deal!
Below is a view from Stellarium (free planetarium software) of the same area. I’ve rotated and scaled the image to match the photo.
Interestingly, an inch or so to the left of the star Alnitak below is another fairly bright orange star. It is much dimmer in the photograph above than in the graphic below. It is, in fact, the variable star V1197 Ori. Apparently I caught it on a lower brightness phase.
Original color image — 15 second exposure at ISO 3200, 61mm Radian Raptor telescope, motorized mount, and an Olympus 4/3 camera:
The typical weather pattern lately has been very clear days with clouds rolling in at night. I was going to take a bunch of 15 second exposures and try stacking them, but I only got 4 before the view was obliterated. I may try stacking them later, just to see if there is any improvement, but no matter — this is pretty good for a 15 second exposure with a very small telescope.
I have a little telescope:
As astronomical telescopes go, it’s pretty small: a Celestron NexStar 5 SE. If the seeing is extremely good, I can see the rings of Saturn with it. Unfortunately, where I live the seeing is almost never very good. I tried my best to get pictures of Jupiter and Saturn as they danced close to each other.
December 21 was the night of closest approach. Unfortunately the air wasn’t very clear; drifting clouds sometimes blocked the view entirely.
On December 22 I tried again:
In passing I sometimes tried to get pictures of the Andromeda Galaxy, but I had difficulty with the targeting:
In my previous post I said that Mars actually appeared as a tiny sphere. Here is a much enlarged portion of that image — it’s not much to look at, but I’m tickled that it doesn’t appear to just be a diffraction pattern from a point source of light…
In the original, if you zoom in so that pixels are individual squares, Mars actually is a discernible sphere.
Olympus EM I Mark III, 150mm lens, f/2.8, 20s, ISO1600. Slight greenish tint, as has been noted by others.
Yesterday was the first time it was visible, after three days of bright clear days followed by early evening overcast.
There are many thousands of photos of this comet, most of them better than this. It’s a personal momento.
Olympus EM 1-3; 40mm F2.8 for 2 seconds. ISO 3200. I was sitting down, with the camera on my lap. If weather permits I will try again tonight with a bigger lens and a tripod…
Originally shared by Pierre Markuse
Temperature anomalies arranged by country 1900 – 2016
Take a look at this beautiful data visualization by Antti Lipponen. It shows the average monthly temperature anomalies arranged by country from 1900 to 2016 with a base period of 1951 to 1980. A quite impressive visualization of climate change.
Download and images here:
https://flic.kr/p/W3wPeE (Video)
https://flic.kr/p/XjiYjX (2016 static image)
https://flic.kr/p/XfEejG (1980 static image)
This NASA Earth Observatory article on global warming is answering some of the most asked questions:
http://earthobservatory.nasa.gov/Features/GlobalWarming/
If you yourself or friends have doubts about climate change, I also recommend to watch this video, addressing some common misconceptions: 13 Misconceptions About Global Warming http://youtu.be/OWXoRSIxyIU
Image credit: Temperature anomalies arranged by country 1900 – 2016 Antti Lipponen (https://twitter.com/anttilip) CC BY 2.0 https://goo.gl/sZ7V7x
See more of Antti’s stuff here on Flickr:
https://www.flickr.com/photos/150411108@N06/
Thank you for your interest in this Climate Change/Earth collection. Maybe add me on Google+ (Pierre Markuse) and Twitter (https://twitter.com/Pierre_Markuse) or have a look at the Astronomy/Astrophysics collection here: https://goo.gl/x0zPAJ or the Space/Space Technology collection here: https://goo.gl/5KP0wx
#science #earth #globalwarming #climatechange #temperature #temperatureanomalies #dataviz #datavisualization