Event

CANCELLED DUE TO LOW OR NO PARTICIPATION.  VERY CLOUDY SKIES PREDICTED.
 

WHAT IS SOCIETY OBSERVING NIGHT?
A time for learning from each other! Society observing nights are  for MDAS members to setup their telescopes or other equipment on Mount Diablo for personal viewing and for their own projects.  This is an opportunity to talk with and request assistance from other members on the use of telescopes or other equipment as well as increasing your understanding of the night sky. 
This is a Society-members-only event.

For first-time Society Night observers:
We suggest you attend the Society Night and ask someone there for all the protocols (etiquette basics below).  Also, don’t leave the site by yourself.  Go down with another member.
You'll find members who are quite helpful if you're just learning to use your scope or have other questions. You are not required to bring a telescope or binoculars or other equipment.  This is a wonderful opportunity to learn about the variety of telescopes available. Please ask before taking a look through another member's scope.
Feel free to ask for assistance.  We all learn from each other!

 

See "SOCIETY OBSERVING NIGHT ETIQUETTE BASICS" below.
 

Happy observing!

 

 

Date: Saturday, October 26, 2024

Time: 5 p.m. Pacific

Location: Mount Diablo - Lower Summit Parking Lot
Summit Rd
Clayton, CA 94517

Information for Visitors

Location Details

Mount Diablo - Lower Summit Parking Lot

Lower Summit Parking Lot off Summit Road - almost to the top of Mount Diablo

Notes:

Click here for the full schedule of Public Astronomy Nights.

The park gates close around sunset, so be certain to arrive in plenty of time.
The temperature on the mountain can drop considerably during the evening, so dress warmly. Keep in mind that this is a state park and, as such, park rules apply, including any gate fees.

Two or three times during the session, visitors will be escorted off the mountain in groups. Departure will be by way of the North Gate (this becomes Oak Grove Road in Walnut Creek once you are outside the confines of the park.)

Events are only canceled due to rain or fire hazard. Don't be put off by somewhat overcast skies. Often, when it is overcast in the late afternoon, by the time night arrives on the mountain viewing is fine.

If you would like advice on current conditions, you can usually reach a person in the South Gate kiosk until sunset at (925) 837-0904. For more information, call the Mt. Diablo "Hotline": (925) 837-2525

UPCOMING EVENTS

Mon 4/13/2026
7 p.m. - 8 p.m. Pacific
MDAS Board Meeting
Thu 4/16/2026
7:30 p.m. - 9 p.m. Pacific
Fallon MS Astronomy Night Fallon Middle School Blacktop
3601 Kohnen Way
Dublin, CA
Sat 4/18/2026
7 p.m. - 11 p.m. Pacific
Public Astronomy Program: Constellations - Stories in the Sky Mount Diablo - Lower Summit Parking Lot
Summit Rd
Clayton, CA
Tue 4/21/2026
4:30 p.m. - 6 p.m. Pacific
Rheem Science Fair Donald L. Rheem Elementary School
90 Laird Dr Moraga, CA 94556
Moraga, CA