Tag Archives: Deneb

NASA Space Place – A Trip Through the Milky Way

Poster’s Note: One of the many under-appreciated aspects of NASA is the extent to which it publishes quality science content for children and Ph.D.’s alike. NASA Space Place has been providing general audience articles for quite some time that are freely available for download and republishing. Your tax dollars help promote science! The following article was provided for reprinting in September, 2018.

By Jane Houston Jones and Jessica Stoller-Conrad

2013february2_spaceplaceFeeling like you missed out on planning a last vacation of summer? Don’t worry—you can still take a late summertime road trip along the Milky Way!

The waning days of summer are upon us, and that means the Sun is setting earlier now. These earlier sunsets reveal a starry sky bisected by the Milky Way. Want to see this view of our home galaxy? Head out to your favorite dark sky getaway or to the darkest city park or urban open space you can find.

While you’re out there waiting for a peek at the Milky Way, you’ll also have a great view of the planets in our solar system. Keep an eye out right after sunset and you can catch a look at Venus. If you have binoculars or a telescope, you’ll see Venus’s phase change dramatically during September—from nearly half phase to a larger, thinner crescent.

Jupiter, Saturn and reddish Mars are next in the sky, as they continue their brilliant appearances this month. To see them, look southwest after sunset. If you’re in a dark sky and you look above and below Saturn, you can’t miss the summer Milky Way spanning the sky from southwest to northeast.

You can also use the summer constellations to help you trace a path across the Milky Way. For example, there’s Sagittarius, where stars and some brighter clumps appear as steam from a teapot. Then there is Aquila, where the Eagle’s bright Star Altair combined with Cygnus’s Deneb and Lyra’s Vega mark what’s called the “summer triangle.” The familiar W-shaped constellation Cassiopeia completes the constellation trail through the summer Milky Way. Binoculars will reveal double stars, clusters and nebulae all along the Milky Way.

Between Sept. 12 and 20, watch the Moon pass from near Venus, above Jupiter, to the left of Saturn and finally above Mars!

This month, both Neptune and brighter Uranus can also be spotted with some help from a telescope. To see them, look in the southeastern sky at 1 a.m. or later. If you stay awake, you can also find Mercury just above Earth’s eastern horizon shortly before sunrise. Use the Moon as a guide on Sept. 7 and 8.

Although there are no major meteor showers in September, cometary dust appears in another late summer sight, the morning zodiacal light. Zodiacal light looks like a cone of soft light in the night sky. It is produced when sunlight is scattered by dust in our solar system. Try looking for it in the east right before sunrise on the moonless mornings of Sept. 8 through Sept 23.

You can catch up on all of NASA’s current—and future—missions at www.nasa.gov

Caption: This illustration shows how the summer constellations trace a path across the Milky Way. To get the best views, head out to the darkest sky you can find. Credit: NASA/JPL-Caltech

About NASA Space Place

With articles, activities, crafts, games, and lesson plans, NASA Space Place encourages everyone to get excited about science and technology. Visit spaceplace.nasa.gov (facebook|twitter) to explore space and Earth science!

CNYO Observing Log: Clark Reservation State Park, 21 August 2015

Greetings fellow astrophiles,

With Perseid Week just behind us, Bob Piekiel and I set up shop for one final Summer 2015 observing session at Clark Reservation. As was mentioned in a Clark Reservation post from last year, it isn’t a great location for heavy-duty amateur astronomers – Syracuse (and its light pollution) lies very close to my hometown of Jamesville (or vice versa, I guess) and even thin cloud cover acts as a dirty mirror to brighten the ground (and sky) around us. For the new observer, however, Clark Reservation is an excellent spot to get one’s feet dewy – it’s close to civilization (and easy to find) and the light pollution wipes out many of the dimmest stars (it probably isn’t far off to say that the sky goes from 2000 to only 400 visible stars thanks to stray city light), making constellation identification significantly easier.

2015august27_clark_lecturestart

Early attendees listening to the first welcome lecture.

The session started slowly enough around 8:00 p.m. with a small group of attendees present for our introductory observing lecture/white light warning/usual canned schtick. It wasn’t until after we hit the 40 people mark that I found out that this session was mentioned in the Post-Standard paper as a Weekend’s Best. As we hit the near-80 people mark, we both turned up the lecturing knob to keep people informed and entertained as the observing lines cycled through our two scopes. The crowd was excellent, interactive, and very patient.

2015august27_clark_halfcrowd

A shot of half the crowd waiting for the ISS.

Every year, I find that some aspect of observing gets a kind of special attention that then becomes part of session dogma (past years being the focus on the hiding of smartphones and flashlights, the very deliberate explanation of how to (and how not to) observe through the scope, and the emphasis on the circumpolar constellations as the best way to get into seasonal constellation identification). The purposes of each of these is, simply, to simplify the session for the attendees (call it a “crash course” in observing). This year, it’s been observation by way of a “hierarchy of observables” (something that Bob and I both have used often). It goes as such:

Early in the evening (including before sunset), non-solar observers have the Moon in all its grandeur (itself possibly the best observable there is for amateur astronomy). While all of the classical planets (Mercury, Venus, Mars, Jupiter, and Saturn) can also be observed, they require a little more time to get to the point of being interesting. Maybe 20 minutes after sunset. By the time that Vega, Arcturus, Deneb, Antares, and Altair are visible (usually coincident with the planets), the most prominent double stars in the sky are visible enough for decent magnification (here, specifically mentioning Albireo in Cygnus and Mizar and Alcor in Ursa Major). Another 20 minutes later, the brightest Messiers are visible – specifically M57, the Ring Nebula in Lyra and M13 in Hercules. 20 minutes later, some of the dimmer Messiers become (just) observable – here, the Andromeda Galaxy (M31 and M32) in Andromeda, and M27, the Dumbbell Nebula in Velpecula. 20 minutes later (so we’re now 80 or so minutes after sunset), the Messier gates flood open and one can begin to make out more objects than can usually be gotten through with a +40 crowd in 2 hours anyway.

Add to this list the ISS, Iridium Flares, random other satellites, a few shooting stars, and some of the detail of the Milky Way inside of Cygnus and down to as much of Sagittarius as the tree line will allow, and you’ve (hopefully) gone a long way to introducing a brand new observer to some of the very best sights available in the nighttime sky (with the above list obviously biased towards the Summer and Fall skies).

To the list above (with only Saturn and Neptune in the planetary observing list), we added at least two meteors (one in the right direction for a Perseid, one not) and a dimmed, by still present, Milky Way band. The lecturing itself didn’t stop for the entire two hours, and we were thankful for the questions that kept us (and others around us) occupied.

With the end of Summer in sight, part of CNYO’s yearly outreach will now include more library lectures and, of course, Bob’s monthly sessions at Baltimore Woods. Stay tuned for event announcements!

CNYO Observing Log: Baltimore Woods, 13 July 2013

One month from the peak of the Perseid Meteor Shower, Bob Piekiel’s monthly Baltimore Woods session this past July 13th was a study in summertime CNY observing – that is, a study in patience, persistence, and bug spray.

2013august1_scopes

Caption: Scopes and observers at the ready.

The evening started with an expectation of partly-cloudy skies according to all forecasts. The setup of of Bob’s 16″ Meade SCT, 25×125 Vixen binoculars, Larry Slosberg’s 12″ New Moon Telescope Dobsonian, and my 12.5″ NMT Dob went slowly as we watched the clouds move fast and move in. What might have been an early observing crowd at BW turned out to be an evening Frog Walk program that had the attendees hopping into the distance from the parking lot.

2013august1_bob_elaine

Caption: Elaine, Bob, and a 16″ Meade SCT.

Scope setup and cloud cover were complete by 8:45 p.m., leaving a group of eight of us to strain to see Vega, Deneb, Altair, and Arcturus (the four brightest stars in our sky this session). Their appearance at all produced the call of their individual names for well over an hour. We were lucky enough to catch a few early glimpses of Saturn and the Moon, but even they were no match for cloud formations approaching from the West. While no one complained loudly about the mosquitoes in the air, no one appreciated their presence either. One of the benefits of a non-DEET (or, at least, more natural) bug spray is that, with a spray and rubbing-in around your head and neck (that you are more hesitant to do with the DEET variety), you can stare into an eyepiece unencumbered by the ever-louder buzzes in your ear.

2013august1_author_and_scopes

Caption: The author waiting impatiently for clear skies (photo by Larry Slosberg).

With the hopes of later clearer skies (and because the scopes were set up anyway), the group engaged in the time-old tradition of assorted conversations under an overcast nighttime sky while waiting for clearings between clouds.

With 20 minutes to go in the “official” BW session, dark patches finally began to appear at our zenith. Within 10 minutes, these small patches had grown into large spans of dark sky, from which observing began in earnest at 10:50 p.m.

2013august1_enhanced_south

Caption: A view of the southern sky (featuring Sagittarius and Scorpius).

The official session lasted another hour or so and included a few Iridium Flares and one pair of unwanted car headlights directly in our path (if you see a scope in the middle of nowhere, PLEASE dim your lights).

2013august1_car

Caption: A very close double – car headlights raining on our session.

My observing list included Albireo (the head of Cygnus the Swan and one of the great double stars in the Night Sky), Alcor and Mizar in the handle of the Big Dipper (in the tail of Ursa Major), the great globular cluster M13 in Hercules, the “Double-Double” binary star pair in Lyra (Epsilon1a and Epsilon2a Lyrea, making up the handle of the lyre with Vega), The Ring Nebula (M57) in Lyra, the Veil Nebula (a supernova remnant quite obvious in an O III filter) in Cygnus, and M5 (which I think is a slightly crisper globular cluster than M13) in Serpens. In the search for M5, the skies were dark enough that NGC 5921 in Serpens (the half of Serpens known as Serpens Caput, to be specific) became ever-so-slightly prominent. This galaxy, dim and featureless but still bright enough to notice in a scan of the skies around M5, is shown in Hubble images to be a fantastic barred spiral galaxy.

2013august1_ngc5921

Caption: NGC 5921 (from NASA/Hubble).