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Monday, November 10, 2014

Total Lunar Eclipse from Conway Observatory, October 8, 2014

I started intently watching the sky in August 2007, and truly took up the hobby of astronomy in July 2008, when I bought my 6" Dobsonian. There had been total lunar eclipses in October 2004, and March 2007, and I had seen parts of those, but not through knowledgeable eyes. Since familiarizing myself with the sky, and the science and history of astronomy, there have been four lunar eclipses that totality occurred with the Moon over Northwest Indiana. In February 2008, heavy lake effect snow over Valparaiso prevented me from observing any of the eclipse. That storm was a narrow lake effect band, however, and other parts of the region had clear skies, according to radio reports the next day. Then in December 2010, perhaps the finest lunar eclipse of my lifetime was going to occur, on the winter solstice, and with totality while the Moon was rather high. Again, it snowed. I had planned to observe with Chicago Astronomers at Adler Planetarium, but the snow made driving conditions dangerous, so I stayed home. Not quite a year later, there was another December total lunar eclipse, and while skies were clear at Conway Observatory in Lowell, Indiana, the eclipse started shortly before Moonset, and I could only observe the beginning of the partial phase.

That was the last total lunar eclipse until April 15, 2014, and again, totality would be visible from Northwest Indiana. It should have been a great eclipse to observe. On the 14th, I frequently checked the forecast, and watched satellite images of a large system casting cloud cover over Illinois and Indiana. The system appeared to be moving through, and I was sure would pass before the eclipse began. After midnight, a check of weather websites led me to look out the window, and see bright, glorious moonlight. It was a cold night for mid-April, so I bundled up, went outside, and...

SNOW!!! My friend Ryan, a meteorology student at Valparaiso University had messaged me around that time that a lake effect snow band had pop up unexpectedly, and was dropping snow over much of the region. I was crushed. After waiting so many years for a total lunar eclipse, and being snowed out for February and December eclipses, I really thought snow wouldn't be a problem in the middle of April, but the winter of 2014 was possibly the worst of my life, with far too much snow, too often, and far too many days of dangerously cold temperatures. And of course, another snowstorm in April. Would I ever observe a total lunar eclipse without snow?!?

Fortunately, the wait for the next total eclipse was less than six months. The entire April eclipse would have been seen from Northwest Indiana. While totality for the October 8 eclipse was entirely visible in the region, the Moon would set with most of Luna covered by the Earth's shadow.

http://www.skyandtelescope.com/astronomy-news/observing-news/total-lunar-eclipse-09262014/

Although the Moon wouldn't start to pass through Earth's shadow until the early morning of Wednesday, October 8, for me the experience began the evening before. I was driving to my Tuesday night bowling league, when I noticed Luna above the horizon before I made a left hand turn to the west. The sky was clear, the Sun was about to set, and even the worst forecasts I'd seen had been rather favorable. I stopped at the park across from the bowling alley, ran up the hill, and captured both the Moon rising and the Sun setting. I had a feeling I was finally going to observe a total lunar eclipse before I saw the Sun again.


Sun setting Tuesday, October 7, from Portage, Indiana.

Moon rising Tuesday, October 7, over Portage, Indiana.


 photo 20141007_181825-Copy.jpg

Panorama of sunset and moonrise, Tuesday, October 7.


As a third shifter, I usually go to work after I finish bowling, but not that night. Instead, I drove to Conway Observatory. I wouldn't need its rather dark sky to observe the eclipse, but I did want to take advantage of its wide open western horizon, since the eclipse would be ongoing at moonset. Before setting up my telescope, I sat in the heated control room, going over predicted times and graphs in magazines and online. My chance was finally here, and I wanted to be prepared for what I was about to observe. Then I unloaded my equipment, and took images of the Moon while I waited.


Pre-eclipse image of 2014's brightest full Moon.


My telescope was set up not far from the observatory's basement door, and I left a notebook inside, so that I could take little warm up breaks during the night, and record as many moments as possible. The night was chilly, getting down to around 40° F, but with breezy conditions most of the night, it felt colder. I was bundled up, but had forgot to bring gloves, which I would later regret.

Although Calumet Astronomical Society members have access to Conway Observatory any time, it is located on county park property. I didn't arrive until close to midnight, but there was nobody there, and I was kind of surprised. Usually a full Moon, or publicized astronomical events bring gawkers at all hours of the night. Except for howls from coyotes a couple times during the night, everything was quiet at the observatory. Almost too quiet, with no cars driving past, and even the air traffic seemed to be lighter than usual. I hadn't planned to experience my first eclipse alone, but now that the moment had almost come, it was fine by me.

I was working two jobs through the summer and into the fall, and had quite a few days that I was awake for 30 hours or more. This was another long day for me. By the time I was home and climbing in bed, I'd been up for more than 35 hours. The October issue of Sky & Telescope had speculated that the penumbra, Earth's outer shadow, might be visible on the Moon at 3:45 AM CDST. Lacking sleep, I set an alarm on my phone for 3:50, sat down in my chair next to the telescope, and took a ten minute nap.

When I woke up, I immediately sensed that the sky was darker. Earlier, the brightest full Moon of the year cast brilliant light down on the observatory grounds, and the empty farmland surrounding it. I could almost feel that the eclipse was about to begin. When imaging the full disk of the Moon through my Dob my Samsung cell phone, I usually need to use a neutral density filter and turn down the exposure settings to keep the moonlight from overwhelming the camera. Although still bright, and no shadow yet evident on the lunar surface, my camera phone could tell the difference, as the neutral density filter was unnecessary when I took images at 3:53. Just two minutes later I thought the Ocean of Storms on the celestial eastern lunar rim looked darker, and with better contrast than it had earlier. Of course, this would be where Luna was entering Earth's shadow.


Luna entering the penumbral phase. Unlike most of my lunar images, this was taken without a neutral density filter.



By 4:09 AM CDST, it was evident telescopically that the partial eclipse phase had begun, and by 4:11, it was definitely apparent by naked eye. I watched as the shadow reached Mare Humorum at 4:20, and then the crater Copernicus at 4:36. All that time, the sky continued to darken, as Luna received less sunlight to reflect back to me. By 5:00, I could still see my shadow cast by the Moon, but I could also faintly see a hint of the winter Milky Way across the sky.


The lunar limb starts to darken as partial phase begins.












View through the finder scope of my Dobsonian.






I noticed the first hint of red hue on the Moon at 5:10. A few minutes later I could just barely see my shadow on the ground. The Moon was almost totally engulfed by our planet's shadow. As totality set in, I noticed a star off the lunar limb, magnitude 5.7 HD4628. I also found Uranus off the lunar limb in the other direction, at about the same magnitude.




Looking to the western horizon in the distance.


Of course, Jupiter was a nice treat in the east.


When the Earth's shadow started creeping across the Moon, almost everything I knew about lunar imaging no longer applied.

Nearing totality.




Showing red tint. Totality was much darker than I expected.


Magnitude 5.7 star HD 4628 near the lunar limb. I also saw Uranus around this time, though it was too far from the lunar disk for me to image together.

Although the Moon became overall much dimmer than I expected through totality, the northern limb never really went dark. Also during totality, while turning to the east to see the morning twilight starting to break at 5:47, I saw a brief, fast, long Draconid meteor streak north to northeast, down toward that horizon. David Fuller had talked about the Draconid meteor shower in his eclipse video, so I wasn't surprised to see one.




Jupiter and morning twilight in the east.






Clouds to the northeast.


A friend also trying to observe the eclipse from Chesterton reported that clouds had moved in, and sure enough, as the eastern sky continued to brighten, I saw a band of clouds off in that direction. I even watched as a cloud passed over eclipsed Luna at 6:13. I was so excited that I'd finally seen a total lunar eclipse, that I didn't notice when totality ended. Morning twilight was growing ever stronger, and Luna was now low in the western sky.












Totality is over. Seeing conditions deteriorated as the Moon got lower, and dew was starting to become a problem.






















Sky & Telescope writer Alan MacRobert had included in his eclipse article an observing phenomenon that I'd never heard of: selenelion. A true selenelion occurs when the totally eclipsed Moon and the Sun are above the horizon together. Totality had ended well before sunrise, but I still thought it would be cool if I could see the partially eclipsed Moon at all after sunrise. It was a close call, and hard to photograph with my phone, but I did indeed see Luna- still partially eclipsed- as the Sun peeked above the horizon, and for a short time after. Then Luna disappeared in the hazy muck near the horizon, and my first total lunar eclipse was over. Success!














Waiting to see if I could catch the partially eclipsed Moon and Sun above the horizon together.













Sunrise before moonset! A partial selenelion! (Or whatever it would be called).




Partially eclipsed Moon still above the horizon after sunrise.


Panorama.







Luna is now lost to the horizon haze.







I shared a few of my images online during the eclipse, and saw some from my friends. Now that the eclipse was over, I went inside the observatory to warm up, and share some details and more images with my friends via the internet. Plus, my hands were freezing. Since I forgot my gloves, and didn't want to waste a moment of eclipse time, I stayed outside as much as possible. Now that it was daylight, I could see three large cracks across my new phone. I took it out of its case because it was easier to get pictures telescopically, but my numb fingers had dropped the phone several times. Oh well. It was worth it. It was worth being cold. It was worth cracking my phone. It was worth missing work. It was worth going too long without sleep. I'd finally observed a total lunar eclipse, and it was all that I'd hoped for. For its rarity and coolness, the Transit of Venus will probably be my favorite observation I'll ever make, but as an experience, I think this eclipse has the Venus transit beat. Now, on to the total solar eclipse of 2017!


Time to go home.

Thursday, October 30, 2014

Partial Solar Eclipse from Valparaiso University Observatory 10-23-2014

I remember that in the summer of 1994 there was a solar eclipse, and I watched parts of it with welder's glass. Since then, though, I have not seen any part of a solar eclipse. From Northwest Indiana, the partial solar eclipse we experienced on October 23 wasn't going to be a spectacular event, with only about half the Sun being eclipse at maximum, and the Sun setting shortly after maximum eclipse. Still, I was looking forward to it, and when the forecast was mostly cloudy, with a possibility of rain, I wasn't very optimistic.

http://www.skyandtelescope.com/astronomy-news/observing-news/partial-solar-eclipse-october-23-2014-10062014/


When I got home from work Thursday morning, I needed to take a nap. I wanted to wake up early so I could check weather forecasts around the region, and check satellite images to see where the best chance of a clear sky might be. I set a couple of alarms on my phone, went to sleep, and then slept through nearly two hours of my phone going off every five minutes.

When I finally woke up, it was after 3:30 PM, and the eclipse was going to start in about an hour. I hurried to get ready, but with so little time, the only observation I could get to in time was at Valparaiso University. I arrived at the V.U. observatory around 4:20, with about 15 minutes to spare. Professors Dr. Bruce Hrivnak and Dr. Todd Hillwig were set up behind the observatory, and ready to host a public observation. There were some eager visitors already there, but the sky was still cloudy. Dr. Hrivnak's wife Lucy arrived a few minutes after me, and like me, she really wasn't expecting to see much either. Then the Sun started to peek through a clearing in the clouds that was opening up.

I hadn't bothered getting any equipment out of my car because of the cloudy conditions, so I hurried to get my 60mm refractor that I use for solar observing and Sun funnel screen. The funnel screen hadn't been used in a long time, and the black electrical tape holding the screen in place was worn, and needed to be replaced. At some point it had come undone, and left a black mark across the observing screen, but there was no time to properly clean it. I hastily re-taped the screen in place. There wasn't enough time to get it nice and tight across the top of the funnel, but would do for this observation, which might not last long.


Not ideal conditions, but I was able to observe the beginning of the eclipse through the clouds to the west.


Finally ready to observe, I found the Sun by using the shadow method, and was impressed by the massive sunspot A.R. 2192. Lucy Hrivnak gave me a pair of eclipse glasses, and I was surprised that sunspot 2192 could be seen even without magnification. A small crowd started to gather around my telescope for a look at our Sun. Then I saw a slight impression on the solar limb, and the eclipse had begun.


First eclipse image on the Sun funnel screen.

Like me, Dr. Hrivnak was using a small spotting scope to safely project an image of the eclipsed Sun, while Dr. Hillwig had a full aperture solar filter on a 6" SCT. Of course, they were also handing out eclipse glasses to anybody who wished to see the eclipse. But like I found out during the Transit of Venus, people really seemed to enjoy the funnel projection screen. The fairly large image on the screen and being able to observe in a group makes this a popular method for observing any solar event. It also attracted the attention of Heather Augustyn of the Times of Northwest Indiana. Heather interviewed me, and Times photographer John Luke got a shot of me demonstrating the funnel projection system. Both the image and interview were included in the online article, and in Friday's newspaper.


Photo credit: John Luke- The Times of Northwest Indiana.




Small crowd observing the partial solar eclipse behind Valpo University's campus observatory.





I watched as a small sunspot near the solar limb was eclipsed by the Moon, but didn't time the moment of occultation. I was just trying to enjoy whatever time remained of the Sun peeking through the clouds. Right around 5:00 PM CDST, the Sun started to disappear behind clouds again, and it looked like the end of the observation. I left my telescope set up just in case, but took a few moments to document the crowd, the sky conditions, and posed for a picture with professors Hrivnak and Hillwig. From that point all telescopic observing was over. The Sun did show through the clouds briefly around 5:30, but it was very low in the sky, and the sunlight wasn't strong enough to cast shadows for aligning my telescope. I could sort of make out the outline of the Moon through eclipse glasses, but clouds were also obscuring the solar disk, making it hard to tell just how much of the Sun was eclipsed by our Moon.


Final eclipse image on the Sun funnel. Giant sunspot 2192 is clearly visible.


Professor Todd  Hillwig oversees observing through a filtered telescope, while behind him, professor Bruce Hrivnak is projecting an image of the eclipse through a spotting scope.

Though still in progress, clouds cut short serious eclipse observing.

Selfie behind the dome.

Posing with professors Hillwig and Hrivnak, and their friend.



Do these eclipse glasses make me look cool?





Even before the Sun had set, I packed my gear, signed the observatory's guest book, and said goodbye to the Hrivnaks and Dr. Hilllwig. As I left the campus, and turned west onto U.S. 30, the Sun was just above the horizon, and just below the clouds gathered in that direction. I could easily see the eclipse still in progress, and pulled over to try to get a picture. The settings on my cell phone just aren't up to getting images of the Sun, even while almost half eclipsed.




Trying to get final images of the eclipse Sun, but my phone couldn't capture what I saw naked eye.


Even though it turned out mostly cloudy, and I almost missed the eclipse by oversleeping, I seem to have seen more total minutes of eclipse than others in the region. I enjoyed it while I could, and look forward to a trip south in 2017 to stand in Luna's shadow.