Planning to observe?
Check the weather first

Beaver Creek Clear Sky Clock

"To bring together those who appreciate the night sky!"
The TriState Astronomers is a group of amateur astronomers from the area surrounding Hagerstown, MD. & Washington County. Since 1985, we enjoy sharing the ageless wonders of the night sky. About Us!


Club Officers



Public Outreach/Events



Skylights Podcast:
The Night Sky
Download sky map
2017 Moon Calendar

Object of the Month
Constellation of the Month
Bright Comets
Messier Club
Lunar Lunatics Club
Magnitude Explained
Great American Eclipse

Satellite Flybys

What are Iridium Flares?
Your Sky

Top 10 Very Red Stars

TriState Astronomers

Promote Your Page Tooo

The evenings of October 27 and 28
From sunset until 11 pm, both nights!

The TriState Astronomers will have telescopes set up near the Visitor’s Center for the public to observe the wonders of the autumn night sky. Stop by when you wish - this event is ongoing throughout the evening, provided the sky is not cloudy. Also - there will be laser guided tours of the night sky through the evening.

Both nights sponsored by "Visit Hagerstown Maryland".

Click here for poster!

Research Talk & Star Party Series
Where:   Penn State Mont Alto, Mont Alto, PA
When:    7:30PM until 10:00PM on Tuesday, October 17, 2017
Show me a MAP

TSA member Kim Herrmann is continuing a series of three evening talks per Penn State semester (fall & spring) followed by a star party (weather permitting) at Penn State Mont Alto (roughly half an hour NNE of Hagerstown or 15 min N of Renfrew Museum and Park). Here’s the plan for the evenings:

7:15 PM Open the room for the talk
7:30-8:30 PM Feature Talk (Auditorium of General Studies)
8:30-8:45 PM Light refreshments (cookies) / time to set up telescopes
8:45-10:00 PM Star Party in the Perry Field)

Next Club Meeting - October 18, 2017 - 7:00 pm. at the Brish Planetarium This meeting will feature a presentation by Dr. Emily Martin: The End of Cassini. 

6:30 – 7:00 p.m. Doors open for informal discussion in the planetarium along with refreshments

7:00 – Presentation begins!

All regular meetings of the TriState Astronomers are free and open to the public. Bring a friend and share the excitement of amateur astronomy!

Other Events

The TriState Astronomers


Defending The Dark

Hubble Video
2 Decades
of Discovery

Light Pollution
Learn more about it.
More Info.

Astro Pictures
of the day. Daily
astro images.

Help us to further improve our
Outreach Educational Program!

Use Paypal to donate to the
TriState Astronomers.

We are a 501(c)(3) non-profit educational organization.

For NEW and RENEWING members. Use Paypal to pay
your annual dues.

Fill out membership form here.
You will then have a link to return here to complete payment.