Folks, I will post an entry re my time at Stellafane, I promise. However, the editor of our astronomical club newsletter forced me at gunpoint (really, he did! Really!) to write an article for the newsletter, so I will share something after that is published.
One thing that happened when I went there is that I tried to do astrophotography using a fisheye lens but screwed up with using too low an ISO (a measure of film sensitivity, leading to photos that were too dark (you’ll see them later.
After the debacle that was my failed attempt at astrophotography at Stellafane, I decided to try again.
This time, I originally planned to go to StarFest 2014 at Hopewell Furnace tonight, which is another amateur astronomy conference. However, I managed to get a light fever, and did not feel like going everybody else sick instead. I decided to do astrophotography work at home, and to also break out my telescope. There was not much that I could see in my sky, because there’s so much light pollution in Havertown, and the summer haze makes it worse. However, I was able to see the Big Dipper, four stars of the Little Dipper, and various other stars. I’d rate the transparency at a 4 and the seeing around 6. For here, It was a good night. I did manage to see Cygnus and the Summer Triangle, which was unusual for this time of year.
So, these are some pictures of my slightly better attempt at stack astrophotography. In the last two final photos, there are some slight diagonal lines. That’s due to the fact that I’m trying out a demo of Nebulosity 3–it’s a Mac program that does photo stacking. I was using my Canon 60D using my Rokinon 8mm Fisheye, set at infinity with an ISO of 1250 for a 10 sec exposure after a 10 second delay. I didn’t use bias or flat images, just dark images.
Aside from the cultural history of Mars, it is noteworthy that it wouldn’t be a particularly fun place to stay. Too cold, covered in rust, and only a tiny bit of yucky tasting acidic water. Yes, if I were a Martian, I would want to invade the Earth. Earth girls are cuter.
Now, on to my rant.
See all those stars in the Star Walk picture? See all the stars in the picture of Mars that I took? What? No stars in the picture I took? Just Mars, right?
Folks, I did this observation in my company’s parking lot, which is flooded with light. That night I could see Mars, Spica (lower right hand star in the “box” in Virgo), and Jupiter. That’s about it.
That’s light pollution for you.
Seriously, it is a real problem. I’ve heard of complaints from city folks when they went out to the country and thought people were poisoning the air because they saw a “cloud” that extended for the length of the sky (er, that’s the Milky Way, city mouse).
The first time I really SAW the Milky Way was when I was bowhunting in Sullivan County, PA (Northern Tier). I was camping in my car and was awakened at 3AM by a bright light. I opened my eyes and looked outside to see loads of stars, very much like the picture above. I marveled in wonder and felt sad that where I live, one is not able to see such sights.
I live in a “white zone,” an area classified as the highest level of light pollution available. Where I live, I can see the larger, brighter constellations. That’s about it without a telescope. In the following link, which includes my town, Havertown, you can see how white it is.
Compare that with Cherry Springs State Park, near Coudersport, PA, an International Dark Site (one of the darker places in the country). That’s in blue, which means it is better. I suspect the grey area below is either not measured, or even better, but not easily accessible.
Today I braved the elements again and got in another observation. This time I went a little west of Cassiopeia and looked at Andromeda and the Andromeda Galaxy/M31.
Again, I had focus issues with my camera. I think what happened was a combination of star drift and too wide an aperture. I was using my 50mm lens, and I noticed that I had stuff out of focus at 1.8, but when I moved my aperture to 3.5, it improved. I was able to get a picture that wasn’t too incredibly horrible out of about 20 shots. In this one, the Andromeda Galaxy is somewhat present.
Here is the image with a little more of a guide to what you kinda sorta are seeing:
That smudgy thing in the circle is the Andromeda Galaxy. It is around the size of the moon, about 2° in size. It is noteworthy that Mirach (β Andromeda) is a red giant. By naked eye this could not be seen, but it could be seen in the above photo.
Here are some clearer views in Stellarium.
I also spent some time fiddling with a multi reticle red dot finder that I purchased which goes on top of the 25x100s. Got it to work by zeroing in on the moon. It does make finding things easier, assuming I can star hop to where they are. With binoculars, though, compared to telescopes which are inverted and/or upside down, it is far easier. the Finder can also double as a rifle sight (yet another hobby of mine).
While what’s below isn’t my actual red dot finder in action (it was a bugger trying to take a picture of it due to depth of field issues), this is essentially what it would look like looking through it.
Here is my observation report for tonight:
Sadly, due to shifting transparency conditions, I was not able to see the Andromeda Galaxy using the 25x100s tonight, although I was able to see it with my 8x30s earlier in the evening.
Andromeda is named after the daughter of Cassiopeia. Andromeda was apparently chained to a rock to be eaten by the monster Cetus, which is behind Pisces. It is bordered above by Perseus, below by Pegasus, to the right by Andromeda’s mother, Cassiopeia, and the Pleiades are to the left. Pisces and the Triangulum are to the left, but closer. Only one or two stars in Pisces were visible tonight, and Pegasus was behind trees.
The Andromeda Galaxy/Messier 31 is one of the largest deep space objects of the Messier group. It is a spiral galaxy about 2.5 million light years away from Earth. It will collide with the Milky Way galaxy in the future! In 3.75 billion years. Not high on my list of anxieties this week.
Today focused on a constellation for the Constellation Hunter Program, Cassiopeia. The weather was pretty bad for viewing. I put up with it, though, because we are expecting 3 storms this week, and it is probably the best I’m going to do for now and the near future. About all that one could see were constellations and Jupiter. I only saw about 4 stars of the Little Dipper–it was pretty bad.
For the record, until tonight I pronounced it Kas-eee-OH-Pe-Ah. Apparently this is how you pronounce it. It is also the most boring video I’ve ever seen on the topic. Needs more of a body count. But, now you know.
Tomorrow is Groundhog Day, and I’m already sampling woodchuck recipes and posting them on Facebook in the hopes that Puxatawney Phil is browsing prior to his big time tomorrow morning. I’m not going to let an oversized agoraphobic rodent get in the way of my learning about the wonders of the universe.
Here’s my official observation log for tonight. I think my sketching is getting progressively better.
That being said, I thought I’d try taking pictures with my nifty-fifty lens (50mm) to see if the pics came out clearer. In my infinite wisdom, I took it off of Autofocus, and never managed to remember that I needed to manually focus it. I’m just grateful that anyone who knows anything about photography, videography or the like is not reading this.
Anyway, here are some of the pics, such as they are.
Cassiopeia from Stellarium. The Andromeda Galaxy is in the lower left (not observed due to weather conditions). This is what Cassiopeia is supposed to look like, at least on the computer.
I left work a little early, as we had a blizzard recently, and I had a number of cancellations at the psychotherapy practice for which I work. I looked up at the sky, and as is typical for after a major storm, the sky was clear. Cassiopeia was clear as day.
But, we are talking about MY luck, right? I got home and had to get a few things done around the house, then we had a guest, and then I went outside, and clouds had formed. Cassiopeia was gone. Orion was around (it often is), but I saw that the last time. Jupiter was in a clear patch, so I took a pic or two.
Couldn’t get any real detail on Jupiter–that will have to wait until I start bringing out the telescope (too darn cold right now–14 degrees F, with a wind chill of 5 degrees F! Brrrrr!). But, I was able to see Castor and Pollux, the “twins” of Gemini with the naked eye (the conditions stunk, so that’s all of what I was able to see of Gemini). When I took the picture, I took it at the widest setting, and cropped like mad. Picture quality did improve compared to earlier pics, and I noted that Castor appeared to be a blue star! I had never seen a blue star before! Of course, I looked it up on Wikipedia, and it turns out that the blueness is an artifact of the fact that it is light from several very close stars (see below). Even on the cruddiest nights, one can experience new things.
α Gem (Castor): the second brightest in the constellation [of Gemini] after Pollux. Castor is a sextuple star system 52 light-years from Earth, which appears as a magnitude 1.6 blue-white star to the unaided eye. Two spectroscopic binaries are visible at magnitudes 1.9 and 3.0 with a period of 470 years. A wide-set red dwarf star is also a part of the system; this star is an Algol-typeeclipsing binary star with a period of 19.5 hours; its minimum magnitude is 9.8 and its maximum magnitude is 9.3.