Denver Astronomical Society 🔭
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denverastro.bsky.social
Denver Astronomical Society 🔭
@denverastro.bsky.social
340 followers 67 following 70 posts
Our mission is to increase public knowledge about #astronomy, promote the importance of maintaining dark skies, and encourage careers in astronomy, #space science, #astrophysics, and other physical sciences.

Join us at denverastro.org

#das #denverastro
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denverastro.bsky.social
What's Up in Denver?
Nov. 10-16 2025

There’s a lot happening in the Mile High sky this week! The waning Beaver Moon dances past the Beehive Cluster and Regulus, while the Northern Taurids light up the night with the occasional fireball...

www.denverastro.org/whats-up-in-...

#das #astronomy 🔭
Infographic showing the Denver night sky as seen looking east on November 10, around 11:00 p.m. MT. The Moon can be seen near the Beehive Cluster, and Jupiter is high up in the sky
November 10, 2025 at 6:06 PM
denverastro.bsky.social
TICKET RELEASE!
We have added FORTY additional Astronomy Night tickets for November 2025 at @chamberlin-obs.bsky.social

Including 20 for
*** TONIGHT! ***

Sat, Nov 1
Sat, Nov. 29

Reserve your tickets NOW at denverastro.org/reservations/

#stargazing #denver #DAS
Wide-shot time-lapse photograph of DU's historic Chamberlin Observatory at night. Above the dome to the left is Polaris, the North Star, and the other stars of the night sky are circling around it. The building is dimly lit, and red light can be seen in the windows upstairs inside the dome, which is open to the south. Tall pine trees surround the building..
November 1, 2025 at 12:56 PM
denverastro.bsky.social
Attn DAS members:

The deadline for our Doveed Levy Youth Service Award is quickly approaching! DAS members 19 and under may apply. Applications close Nov 1! Learn more at :

das-dlysa2025.paperform.co
Doveed Levy Youth Service Award
Application for the DAS's annual Doveed Levy Youth Service Award, open to DAS members age 19 or younger - Powered by Paperform™
das-dlysa2025.paperform.co
October 28, 2025 at 6:52 PM
denverastro.bsky.social
What's Up in Denver? October 27th through November 2nd, 2025

www.denverastro.org/whats-up-in-....

Happy Halloween from the Denver Astronomical Society — and clear skies for all your celestial adventures! 🎃

#astronomy #DAS
Fun cartoon image showing 4 spooky Halloween characters looking through telescopes at a witch silhouetted against a crescent Moon in a starry sky. Text reads, "Happy Halloween, Denver Astronomical Society"
October 26, 2025 at 1:35 PM
denverastro.bsky.social
DAS Astronomical Equipment Auction
www.32auctions.com/DAS2025_2

Our storage unit is too full, so it's time to have another auction! All proceeds benefit the Van Nattan-Hansen-Anderson Scholarship, with a portion set aside to reward and acknowledge our volunteers!

#astronomy
#auction
#telescopes
🔭
Promotional graphic with an illustration of imagined stars and constellations on a sky filled with nebulae in the background. The text reads, "2025 D.A.S. Annual equipment action, Part 2. October 15-23. Bidding starts at Noon. Cave Optical, Celestron, Meade, Orion, S&S Optika, Tele Vue." There is a QR code that can be scanned that takes you to the auction site at https://www.32auctions.com/DAS2025_2
October 15, 2025 at 6:01 PM
denverastro.bsky.social
What's Up in Denver? October 13-19

www.denverastro.org/whats-up-in-...

It’s a fantastic week for stargazers! Early risers can watch the Hunter’s Moon move through Gemini, Cancer, and Leo—meeting up with Castor and Pollux, Jupiter, the Beehive Cluster (M44)...

#DAS #DenverAstro
#stargazing 🔭
A graphic depicting the night sky as seen looking to the east from Denver on Oct 15 at 2 am. The Moon is near the Beehive Cluster, and Jupiter is high in the sky.
October 12, 2025 at 12:30 PM
denverastro.bsky.social
TICKET RELEASE!
==============
We have two openings available for our Astronomy Night on October 23rd at @chamberlin-obs.bsky.social !

Grab those tickets while you can at
www.denverastro.org/reservations/
Guests enjoy the displays and the vintage telescope at DU's historic Chamberlin Observatory on Denver Astronomical Society's Astronomy Night.
October 5, 2025 at 11:31 PM
denverastro.bsky.social
What's Up in Denver? October 6-12

The Mile High City skies are full of treats! Watch the Full Hunter’s Moon rise, then keep an eye out as Jupiter meets the sparkling “Twinkling Comet Cluster” in Gemini. The Moon makes a close pass...

www.denverastro.org/whats-up-in-...

#denver #astronomy #das
Graphic showing the Moon near the Pleiades cluster in the eastern sky, as expected to be seen from Denver, CO, around October 9, 2025, at 11:00 p.m.
October 5, 2025 at 12:21 PM
denverastro.bsky.social
TICKET RELEASE!
==============
We have added TWENTY-THREE additional Astronomy Night tickets for October 2025 at @chamberlin-obs.bsky.social !

Sat, Oct. 4
Thurs, Oct. 9
Thurs, Oct. 16

Reserve your tickets NOW at
www.denverastro.org/reservations/
* * * * *
DU's historic Chamberlin Observatory seen at dusk.
October 1, 2025 at 12:14 PM
denverastro.bsky.social
How sharp are your eyes? Take this Visual Acuity test of the Moon and find out!!!
www.denverastro.org/test-your-ey...

Over a century ago, astronomer William Henry Pickering created a list of 12 lunar features that grow harder and harder to see. From the easy Copernicus to the elusive...
Image of the Moon highlighting William Henry Pickering's list of 12 lunar features that grow harder and harder to see.
September 19, 2025 at 8:27 PM
Reposted by Denver Astronomical Society 🔭
science.esa.int
📣 We're looking for post-docs in the fields of heliophysics, planetary science, astrophysics and fundamental physics.

Come carry out your independent research with us.

Apply to the ESA Research #Fellowships in Space Science 👉 www.cosmos.esa.int/web/space-sc... 🔭🧪☄️
September 1, 2025 at 12:00 PM
denverastro.bsky.social
TICKET RELEASE!
==============
We have added FORTY-FOUR 44 additional Astronomy Night tickets for September 2025!

Sat, Sept. 6, 7:30 pm: 20 tix
Tues, Sept. 16, 7:30 pm: 4 tix
Sat, Sept. 20, 7:30 pm: 20 tix

Reserve your tickets NOW at
www.denverastro.org/reservations/

@chamberlin-obs.bsky.social
Wide-angle photograph of DU's historic Chamberlin Observatory at dusk.
September 1, 2025 at 12:43 PM
Reposted by Denver Astronomical Society 🔭
chamberlin-obs.bsky.social
Next open house and star party will be Saturday, Sept. 27. Mark your calendars for science fun and stargazing with @denverastro.bsky.social!
August 22, 2025 at 4:54 AM
denverastro.bsky.social
TICKET ALERT!
We have 5 FIVE tickets available immediately for tonight's Astronomy Night at Chamberlin Observatory !

www.denverastro.org/reservations/
Astronomy Night Reservations at Chamberlin Observatory – Denver Astronomical Society
www.denverastro.org
August 23, 2025 at 11:45 PM
denverastro.bsky.social
What’s Up in Denver? August 4th through 10th, 2025

www.denverastro.org/whats-up-in-...

#SturgeonMoon
#Sagittarius
#Astrophotography
#InternationalObservetheMoonNight
#DAS
#StandleyLakeStargazing
#PlanetParade
#Pegasus

@chamberlin-obs.bsky.social
Infographic made using StellariumWeb showing the Moon's position in the southern Denver skies between Aug 4 and Aug 6.
August 2, 2025 at 11:08 AM
denverastro.bsky.social
Today is the LAST day to bid in our summer astronomical auction, with all proceeds going to the Van Nattan-Hansen-Anderson Scholarship fund!

We have 17 nice telescopes with VERY low bids on them at the moment!

Bid today at
www.32auctions.com/DAS2025

#astronomy
#auction
#telescopes
#stargazing
Collage showing photographs of 17 telescopes up for auction by the Denver Astronomical Society, benefiting the Van Nattan-Hansen-Anderson scholarship fund. Scopes include Meade and Celestron reflectors and SCT variations. Graphic advertising the DAS summer auction, which ends August 2nd at midnight. https://www.32auctions.com/DAS2025 "DAS SUMMER EQUIPMENT AUCTION Bushnell Celestron Meade Orion Telescopes Tripods Mounts Wedges July 20 - Aug 2 https://www.32auctions.com/DAS2025"
August 1, 2025 at 12:25 PM
denverastro.bsky.social
TICKET RELEASE!
==============
We have added two additional Saturday night Astronomy Nights for August: August 9, and August 23, at 8:30 p.m.

Saturday nights are much more fun inside
@chamberlin-obs.bsky.social

40 tickets available NOW:
www.denverastro.org/reservations/
Photograph of DU's historic Chamberlin Observatory at twilight. All DAS "Astronomy Nights" start with a DAS lecturer’s informative, multi-media astronomy presentation. Astronomy presentations are designed for visitors of all ages and may be illustrated with colorful computer graphics, videos, and other audio-visual methods as appropriate. After the presentation, visitors may be treated to telescopic views of the moon, stars, star clusters, planets, galaxies, and nebulae, all through Chamberlin’s historic, 28-foot-long, 20-inch-aperture Alvan Clark-Saegmuller refracting telescope (weather permitting). On cloudy nights, visitors can view and learn about the telescope and receive a tour of the observatory, which includes its various clocks, the meridian telescope, the library, wall displays, and an animated video display of the night sky for that month. DAS volunteers will be happy to answer questions about astronomy, astronomical observing, and the observatory.
August 1, 2025 at 12:02 PM
denverastro.bsky.social
What’s Up in #Denver? July 28th through August 3rd, 2025

#Meteors! Star parties! #Moon transits! 🔭

www.denverastro.org/whats-up-in-...

#astronomy #stargazing #DAS
Infographic made using Stellarium web showing the Denver night sky on the evening of July 30. The waxing crescent Sturgeon Moon is visible near Spica looking to the southwest.
July 27, 2025 at 12:51 PM
denverastro.bsky.social
TICKET ALERT!
==============
We just canceled a reservation for Astronomy Night at @Chamberlin_Obs on Saturday, July 26th, 2025, 8:30 pm., so we have THREE TICKETS available immediately.

Grab yours now at
denverastro.org/reservations
DU's historic Chamberlin Observatory at dusk.
July 22, 2025 at 7:02 PM
denverastro.bsky.social
Meet Our New Outreach Coordinators – Join Us in Sharing the Wonder!

We’re excited to welcome two new Outreach Coordinators: Maria Schanhals and Justin Cirillo! Read the full announcement:

www.denverastro.org/meet-our-new...
A volunteer of the Denver Astronomical Society stands by as children take turns viewing the Sun through a solar telescope.
July 22, 2025 at 4:06 PM
denverastro.bsky.social
We just unlocked an additional Astronomy Night for this month - July 26th!

If you've been struggling to find tickets to visit the fantastic Chamberlin Observatory, now is your chance to squeeze in a visit!

Reserve your slots now at denverastro.org/reservations
Astronomy Night Reservations at Chamberlin Observatory – Denver Astronomical Society
denverastro.org
July 14, 2025 at 7:24 PM
denverastro.bsky.social
#NASA ’s Citizen Science: #exoasteroids. Through the ExoAsteroids project, you can help scientists detect mysterious space rocks orbiting distant stars—objects that have never been directly observed before.

www.denverastro.org/nasa-citizen...

🔭

#astronomy #citizenscience
An image rendering of a fictitious star in the Universe surrounded by a belt of asteroids.
July 7, 2025 at 12:01 PM
denverastro.bsky.social
What’s Up in #Denver? July 7–13, 2025

Glowing Moon near Antares; a three-planet parade; waxing Buck Moon; Venus and Aldebaran; Cosmic Conversations; DAS Annual Picnic...

www.denverastro.org/whats-up-in-...

#astronomy #stagazing #Colorado #DAS

🔭
Infographic made using Stellarium showing the waxing gibbous "Buck Moon" inside the Teapot asterism, low in the southern sky in Sagittarius on July 9th, 2025.
July 6, 2025 at 7:38 PM
denverastro.bsky.social
What’s Up in #Denver? June 23rd through 29th, 2025

www.denverastro.org/whats-up-in-...

This week in the Mile High City brings incredible opportunities for stargazing, major multi-day star parties, planetary pairings, bright stars, and the Moon cozying up to Mars and the Pleiades!

#astronomy
A partly cloudy, starlit sky expands above a large campsite with tents and campers aglow in red lights.
June 24, 2025 at 12:10 AM
denverastro.bsky.social
TICKET ALERT!
==============
We just canceled a reservation for Astronomy Night on Tuesday, July 15th, 2025, 8:30 pm., so we have THREE TICKETS available immediately.

Grab yours now at denverastro.org/reservations!
Guests to Denver Astronomical Society's 'Astronomy Night' at DU's historic Chamberlin Observatory take turns looking through the 20" Alvan Clark-Saegmuller refractor telescope.
June 16, 2025 at 1:02 PM