Lyra – Into the West

Friday Night Lights and Monday Highlights

Very early Friday morning, I caught the waning moon approaching Jupiter and Aldebaran. You could draw a line from Venus to Moon and cross over or near Jupiter. The skies were clear and should stay clear throughout the day and into the night, with a forecasted high in the mid-80s, twenty degrees below what we’ve been experiencing for the past several weeks.

Friday at work was a whirlwind of meetings, including one held off site at another local law firm. I got home a bit early because one of my vanpool riders took the day off, but within fifteen minutes of getting home, my son and daughter-in-law arrived from their all-day road trip from North Texas. We visited with them for an hour and half, when they left to drive into Kansas City to spend the evening with several of their friends who still live in the area.

Terry cooked an excellent southern comfort food type dinner of chicken-fried minute steaks, organic green beans with turkey bacon, mashed potatoes and home-made white gravy. Too bad the kids didn’t hang around long enough to chow down with us. Terry and I let our food digest a bit, watching the Olympics until the skies darkened enough for some star gazing.

I grabbed the XT8 (affectionately known as ‘Dob’) and carefully carried it out to the lower backyard. This time I took a small table to put my charts on. I set my case of eyepieces on the ground. I brought out the Intelliscope handheld device to attempt an alignment. This device, unlike my ETX-90’s AutoStar, is only used to identify objects, not ‘go to’ them (since the XT8 does not have any motors). The Intelliscope can help you find objects with a warm/cold kind of seeking system. I still haven’t bought a stool to lean against, so my back aches a bit this morning. I did a two star alignment, finding and centering Arcturus first, then Vega.

I wanted to revisit the Double Double in Lyra to both confirm that I could find it by star hopping and to attempt to see the double within the double. I asked the Intelliscope to ID what I had centered in the eyepiece and it claimed I’d found the Crab Nebula. Hmmm. That’s in the constellation Taurus, which isn’t visible until early morning hours in the east. I must have done something wrong in the alignment process. I powered off the Intelliscope device and made a note to myself to re-read the manual in the morning. Since I’d already found Vega, I spent several minutes comparing my star atlas to what I was seeing in the finderscope. I found Epsilon Lyrae and observed it with 26mm, 15mm, 9mm and a 2x barlow (using the 26mm and 15mm). Despite the apparent clearness of the skies, I did detect some haziness and thin stratus clouds overhead. That may have inhibited my ability to split the doubles within the doubles.

I hopped over to Albireo in Cygnus, just to make sure I could find it again without referring to my star atlas. I used a trick I had read about from some artists who do astronomical sketching where you defocus the stars, especially doubles, to discern their different colors. I did this while observing Albireo and I could clearly see the red and blue for each star in the double. I stretched my back for a few minutes and stared off to the northeast, at Cassiopeia, which I could clearly see as a distinctive ‘W’ shape. I could not see the constellation Perseus, but I did see one or two meteors radiating from the space between Cassiopeia and where Perseus should have been visible (but wasn’t because of the haze and light pollution from the prison just north of my location).

I returned to the scope and began a star hop around Lyra in search of M57, also known as the Ring Nebula. This was a test, for me, not only of my ability to find this fuzzy smoke ring, but also of an 8-inch telescope’s ability to cut through the obstacles inherent at my closest observing site (my backyard). I surprised myself. I found the nebula, quicker than I thought I would, and I even saw it through the finderscope. It probably helped that Lyra was almost straight up above me and the telescope, meaning I had less atmosphere to peer through. Using averted vision, with the 9mm, I could clearly see the ring. I used the background stars to focus, because you can’t really focus well on a smudge that’s fuzzy and faint.

Since I found and saw a nebula with the XT8, I wanted to see if I could find a globular cluster next. And I just happened to know where one was. M13 in the ‘armpit’ of Hercules (see chart above) happened to be overhead, somewhere between Altair and Arcturus. I had some trouble locating the stars that make up Hercules with my naked eye. I took several minutes, stretching my back, to peer overhead, but towards the west, and Arcturus. Eventually, the star dots connected in my mind’s eye and I found the constellation. I oriented the XT8 to the general vicinity where I thought M13 would be. I think I saw it through the finderscope, although I can’t remember specifically. Using the 26mm eyepiece, I centered the globular cluster in my field of view and proceeded to observe this large dense cluster for several minutes with various magnifications.

I stared off into the northeast again, still trying to find Perseus and also Pegasus. If I could see the Andromeda Galaxy (also known as M31), I would achieve a triple crown of astronomical observing from my backyard with the XT8 (1: nebula; 2: globular cluster; 3: galaxy). I spent nearly a half an hour, roaming around my backyard, changing my point of view and line of sight to the northeast and east. I found Cepheus, but no matter how hard I squinted or averted my eyes, I could not clearly identify the box that makes up the body of Pegasus. Frustrated, and with an aching back, I decided to call it a night at about half past eleven o’clock.

I returned the telescope to the band room and replaced all the dust caps. I hugged my hubby, for he had brought me a refreshing freshly made strawberry lemonade to enjoy while bending over the telescope for hours. Off to bed and sleep, at least until the dogs started barking when Derek and Royna returned home (sometime after midnight and before five – not exactly sure as I tried to sleep through the commotion).

My alarm only fires off on weekdays, but most days I wake up fifteen minutes early. Not Saturday morning though. When I cleared the sleep from my eyes and checked the clock on my cell phone, it read 5:45 a.m. and I could already tell the eastern horizon was brightening. I grabbed the tripod and camera and went out to the driveway to take a photo of the Moon approaching Jupiter.

Waning Moon Approaching Jupiter (Sat morning Aug 11, ’12)

If I happened to live in the Pacific, today I would be able to observe the moon occulting Jupiter. But I won’t be too disappointed, since I can observe the moon occulting Venus next Monday afternoon, between 3:00 and 4:00 p.m. I plan to take a pair of binoculars and my camera equipment with me to work. I will setup on the top of the parking garage and hope I have a clear line-of-sight through the buildings to the west to see the occultation as it occurs.

But tonight I plan to find a dark sky location and take in as many meteors as I can, raining down from Perseus. I better take a nap this afternoon and set an alarm for one o’clock Sunday morning. Don’t want to miss the best meteor show of the year!

My First Date with Dob

Friday evening I had my first opportunity to really dig in and learn about the telescope I borrowed from my astronomy club. A week ago, Terry and I returned to Kansas City to meet one of the club members at the Warko observatory on the roof of Royall Hall on campus at UMKC. I put in a request to borrow an eight inch Dobsonian telescope (shown at left) to compare and contrast its light gathering abilities with my own ETX-90 (a Maksutov-Cassegrain type telescope). I had high hopes since the aperture on the XT8 is more than twice as big. On the other hand, the ETX-90 is lighter. I drove the van, having hidden the middle set of seats in the subfloor, to make the initial transport of the telescope as easy as possible.

Fast forward an entire week to another Friday evening. After a quick rather disappointing dinner at the local Dairy Queen, Terry and I returned home to separate activities: he to a strings-only practice for one of his bands and me to setting up the loaner scope.

I moved the base into the great room (so called because it’s the biggest room in the house and has a high vaulted ceiling with a floor-to-ceiling corner fireplace). I then re-read the instruction manual, paying close attention to the section dealing with placing the optical tube on the base. The tube weighs just a bit over twenty pounds (the base is a couple of pounds heavier). I picked up the tube, holding it vertically, and rested it gingerly on the bumper stops. I inserted the tension and retaining knobs per the directions and then tested the altitude and azimuth mobility. The base seemed to stick a bit, but nothing that couldn’t be overcome with some nudging.

I attached the finderscope to the optical tube, but did not attempt to adjust it until later, when the tube would be outside and I could find an object to orient on a suitable distance away from my site. I removed the dust cover cap for the tube and for the eyepiece in anticipation for the next phase: collimation

XT8optimalcollimategraphic — When the mirrors are properly aligned, the view down the focuser drawtube should look like the graphic above (for the XT8 telescope).

I peered down the optical tube, past the secondary mirror and its spider support system at the large eight inch mirror nestled in the bottom. A small faint circle was inscribed on the surface of the mirror, assumedly in the exact center. I stepped around to the side of the tube and stared down through the eyepiece opening, where I could clearly see my own eye and the small circle mentioned above. My pupil and the circle did not line up exactly, as they should have (see diagram above left).

Upon further reading, and searching through the boxes and bags that the telescope came in, I could not find the collimation cap referenced in the instruction manual: “This cap is a simple cap that fits on the focuser drawtube like a dust cap, but has a hole in the center and a reflective inner surface. The cap helps center your eye so that collimation is easier to perform.” I forged ahead, hoping I could get the mirror aligned ‘close enough’ for some test observing later that night.

I followed the instructions carefully, reading and re-reading and comparing what I was seeing through the focuser drawtube with the examples provided in the manual. I decided the secondary mirror didn’t need any adjustments, just the primary mirror. The locking thumbscrews on the back of the mirror were already loosened, so I began experimenting with small turns of the larger thumbscrews to adjust the tilt of the primary mirror. I eventually got the small circle in the middle and tightened the locking thumbscrews down. Now to move the unit outside to align the finderscope.

I tilted the tub vertical, grasped the convenient handle on the back of the base with my right hand, keeping the tube vertical with my lefthand. I walked slowly out the back door on the patio and down to the lower level of my back yard, away from (as much as that is possible) the surrounding trees (mine and my neighbors). I needed to find an object about a quarter of a mile away to align the finderscope. Because I live in a valley (Fawn Valley to be precise), everything, including the ground, is up from my backyard, and most of the horizon is blocked by houses and trees. I could barely see the road leading up the hill to where City Hall stands, a couple of blocks to my south. That would have to do. I quickly and easily got the finderscope dialed in.

Now, I had to wait for darkness to fall. I brought out my eyepieces (the three that came with the scope I left in the box with the solar filter) so they and the scope could reach a temperature equilibrium with the outside environment. I went back inside and reviewed the Astro Quest observing award object list and my sky atlas to determine a short list of objects to observe before the moon rose high enough to wash out the night sky.

At half past nine, I went back outside, knowing I’d be able to find Saturn and Mars in the southwestern sky. I did and quickly tried nearly every eyepiece I had, from a 30 mm down to a 9 or a 4 mm. I doubled a couple of those using a 2x barlowe lens. I could clearly see the Cassini division in the rings, but did not try to discern any cloud variances on Saturn’s surface.

I pointed the scope at Mars next, but again, while a bright ruddy object, the red planet still seemed just the size of a pinhead, no matter how much magnification I attempted to throw at it. I guess I need to ask some club members for assistance with seeing well enough to find the polar ice caps. Perhaps I’m just too late in the year, since Mars now sets an hour or two after sunset and I’m looking through so much thick, dirty, hazy, humid air.

I could tell the moon had risen, but still remained low in the east, hidden behind houses and my tall pin oak in my front side yard. My observing goals for the evening included three multiple star systems. The first one I had actually observed when I first got the ETX-90 back in October 2010. The middle star of the handle of the Big Dipper is actually an optical double star, Mizar-Alcor. Terry joined me in observing this popular duo.

My second observing goal could be found in the constellation Lyra, containing the brightest star in the summer sky, Vega, and one of the three stars that form the asterism commonly referred to as the Summer Triangle. Finding Vega turned out to be easy. Correctly adjusting the movement of the telescope when aimed directly overhead, not so easy. I had to run back inside to find my red flashlight and grab my reading classes and sky atlas before attempting to star hop the very short distance from Vega to Epsilon Lyrae, also known as the Double Double. In hindsight, I also had forgotten to confirm how many degrees field of view the finderscope provided me (five degrees from the spec page of the instruction manual read this morning). Because of the light pollution around my house and the rising nearly full moon, I could only see Vega and the beta and gamma stars of Lyra. I could clearly see a triangle in the finderscope with one of the three stars Vega for sure, but which one was the Double Double? I may have observed it last night, but I’m not entirely sure. I plan to retry tonight, provided the predicted thunderstorm activity fades before ten o’clock or soon after.

My final observing objective also appeared almost directly overhead, this time in the constellation Cygnus. The head of the swan (Beta Cygni also known as Albiero) is a striking colorful double star that I easily found and observed for a few minutes. Terry also took a quick look, but opted to let the mosquitoes and chiggers feast on me instead of him. Since the moon would soon escape the defense put up by my pin oak, I asked Terry to help me carry the telescope back into the house while I held the red flashlight overhead to light our path.

I put all the eyepieces back in their cases and all the dust caps on all the openings of the telescope. I recorded two of my three observations on my Astro Quest sheets. Terry, Apollo, Lexy and I all retired to bed and left the moon to play by itself through the short summer night.

Some pros and cons about the Dobsonian telescope: I like the improved light gathering capabilities. I love the finderscope (it’s a very good quality one), but would love it more if it had a right-angle viewer. I did not like the height of the eyepiece on the side of the tube. I will need to get a portable stool to lean against. My back is still aching this morning from the constant bent over position I found myself in last night.

Overall, I enjoyed my first foray among the stars with the SkyQuest. I did not use the Intelliscope handheld device that would have assisted in identifying and locating objects. I will save that adventure for another night, possibly at a darker site.

Heat Bubble Bursts Just in Time for Summer Stargazing

Saturday evening I headed south to Louisburg to volunteer for my second scheduled night of the 2012 Powell Observatory public season. My dad decided to tag along, to enjoy the show and help keep me awake for the long drive home. We left Lansing about twenty minutes after five and my car’s external thermometer reported 106 to 107 degrees, which has been our afternoon average for about a week now, give or take two or three degrees either way. We stopped in Bonner Springs to grab a quick, cool sandwich from Subway and returned to the highway just shortly after six o’clock. I needed to be at Powell Observatory by seven o’clock to help prepare the facility for the weekly public program and observing night.

As we approached Louisburg from the north, I noticed a definite increase in the wind, so much so that my car was jostled several times. At the same time, I noticed a significant drop in the external temperature. By the time I exited US-69, the thermometer read 92 degrees, and was still falling. Except for early mornings the past couple of weeks, I had not seen or felt such low temperatures while the sun still shone. I pulled into the west observing field parking area and realized I was again the first person to arrive. Since the temperature had dropped, I turned off the car and opened all the windows. The breeze felt incredibly refreshing.

My team leader arrived within a few minutes and I received my Powell Observatory ‘Staff’ T-shirt, which I changed into as soon as the building was unlocked. I helped setup the class room for the program, ‘Sounds of Space.’ Another ASKC member arrived and setup his ten-inch Dobsonian for solar observing and I caught a glimpse of some great sunspots before our public guests began arriving. The clouds provided some dramatic solar observing situations.

Pre sunset from Powell Observatory — Click image for more sunset photos from Powell Observatory

I repeated my role as gatekeeper and accepted donations from the public and queried them for their ZIP codes to record for future grant petitions. The first group of twenty-five guests began the ‘Sounds of Space’ program at 8:30 p.m., but I soon had at least that many waiting for the second showing. At one point as I sat waiting for more guests to arrive, what I thought was a stray dog wandered into the observing field, soon followed by three horses, two with riders and a third colt between them. They trotted across the field to the west, with the dog trailing after, riding off into the sunset … literally.

As the sky continued to darken, despite a few wispy clouds, we opened the dome so those waiting for the next program could observe Saturn and a globular cluster found in the constellation Scorpius. I didn’t get a chance to look at the cluster through the 30-inch scope, but I believe they looked at M4, which is near the bright star Antares.

We ended up having nearly ninety public guests Saturday evening and ran a third showing of our program. After the last two guests had left the dome a bit after eleven o’clock, I quickly snuck a peak at the Ring Nebula in the constellation Lyra, one of the Messier Objects I’ve been trying go get a glimpse of for quite some time. Lyra is also home to the very bright star Vega, one of the three stars that form the Summer Triangle.

As the final guests drove away, my team members and I began cleaning the building and storing chairs, tables and other items for the next Saturday. I signed myself out of the Observatory at 11:35 and gathered up my dad for the long drive home. He related information he’d gleaned from another team members about various types of Dobsonian telescopes and helped keep me alert as we sped north towards Leavenworth County.

Next week, we present a program on ‘Our Amazing Moon’ and the following week we’ll pose the question ‘Is There Life Out There?’ We look forward to showing you the astronomical sights (and sounds).

Until then, Keep Looking Up!

Meteor Sprinkles Likely

My husband is a night owl. Ironic, since I’m the one with the astronomy bug, but can’t seem to keep my eyes open after nine o’clock. Saturday evening, Terry went over to a friend’s house to watch the latest UFC pay-per-view fight. I looked forward to an evening of quiet, watching a movie, reading a book and making sure Apollo got extra dog treats. Before Terry left, though, I asked him to wake me up after midnight, preferably between two and four in the morning, so I could take advantage of the dark of the moon and a meteor shower. He remembered and got me out of bed at 3:30 a.m.

I shook myself awake and staggered outside in my flip-flops. I drug the folding chair to a better location on the patio, and leaned back, stretching out my legs in front of me so my head rested comfortably on the chair back, allowing me to see nearly all the sky overhead. My eyes immediately spotted Vega, the brights star in the constellation Lyra. As I mentioned in Friday’s blog post Meteors After Midnight, this weekend’s meteor shower appears to originate from the constellation Lyra, hence the name “Lyrid Meteor Shower.”

Within ten minutes, I spotted a meteor. I decided I needed a sweater or a blanket, so I went back inside to find something to keep my upper body warm and protected from the wind. I settled back into the chair and gazed around the night sky, trying to connect the dots and recognize and memorize some constellations. I easily spotted Scorpius (aka Scorpio) almost due south of me. I could not see my own birth month constellation, Libra, directly west (right) of Scorpio because the stars that form the scales are too faint to be seen from my backyard. Another interesting bit of trivia about my husband: He’s a Scorpio, whom Libras are never supposed to marry. According to Chinese astrology, Terry and I went supposed to marry either. In eight days, we celebrate our 26th wedding anniversary. Go figure. But back to Scorpius. The bright star, Antares, flashed red or green, probably due to the atmosphere and it’s proximity to the southern horizon.

At four o’clock, I went back inside to steep a mug of tea. I boiled some water in the microwave and selected Irish Blend loose leaf tea (my favorite). Another five minutes later, I had a piping hot perfect blend of tea and sugar to take outside with me. While I waited for my tea to steep, I tried to memorize the constellations displayed on the ‘Guide to the Stars’ wheel I purchased recently for Terry. I set it to the appropriate time of night and month/day so I could identify the stars and constellations I saw above the roof of my house. No matter how hard I tried, though, I could not find the constellations Ophiuchus or Hercules, which should have been easily spotted between Lyra and Scorpius. I guess I just couldn’t see enough of the stars to connect the dots and learn those two new constellations.

At one point, a large bird flew directly overhead, barely skimming over the roof of my house. Once the bird cleared my roof and flew over the court, the lights from the houses ringing our cul-de-sac lit the undersides of its wings. I think it might have been an owl, but I can’t be entirely sure. My eyes were focused farther away, watching for falling meteors, than a few feet above my head.

I saw two more meteors before I decided to call it quits and go back to bed. I gave up at 4:30 a.m. I had hoped for a few more than just three total for the night. The ‘forecast’ for the meteor shower claimed upwards of twenty per hour, but I saw only a sprinkling. Adding the ones I saw last night to the two I saw Friday night at the star party, I observed a total of five meteors this weekend. Clouds have moved in from the north today (Sunday), so I doubt I’ll get a chance to try again tonight. Besides, it’s a work night which means I need to be asleep by nine o’clock.

M	T	W	T	F	S	S
				1	2	3
4	5	6	7	8	9	10
11	12	13	14	15	16	17
18	19	20	21	22	23	24
25	26	27	28	29	30