Obscura Society LA: The 100-inch Hooker Telescope - Atlas Obscura
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Pasadena, California

Obscura Society LA: The 100-inch Hooker Telescope

Join the Obscura Society LA for an exclusive evening of observation with the historic 100-inch Hooker telescope at the Mount Wilson Observatory

First we brought you to the 60-inch Hale telescope. Now, we invite you to join us for an exclusive evening with the 100-inch Hooker telescope. Yes, bigger is BETTER.

The 100-inch Hooker was the world’s largest telescope from 1917 - 1948. This world-heritage class instrument was used by many of the most remarkable astronomers of the 20th century and led to Edwin Hubble’s discovery of the general expansion of the universe. Retired from its scientific service, this historic telescope is now open to the public for night-time viewing for the first time in its 98 year history.

Please join us for this once in a lifetime opportunity to gaze beyond our galactic borders with the 100-inch Hooker telescope. For more information, visit the Mt. Wilson's website and check out their virtual panoramic tour.

Ticket sales will close on Wednesday, August 5th for this event on Saturday, September 5th. Please act now!

Notes for this adventure:

START TIME: The start time of this event has yet to be determined. We will meet-up in La Cañada Flintridge around 6:15 pm to carpool up the mountain. The event will end at 12 am. You MUST ARRIVE ON TIME, but you are welcome to leave early. Prior to the event, you will receive an email with the EXACT START TIME.

MANDATORY CARPOOLING: Due to limited parking, carpooling is mandatory. Two weeks prior to the event you will receive an email with the carpool meet-up location and detailed driving directions.

CLOUDS AND CANCELLATION: This event is weather dependent. Attendees will be provided with a phone number to call the day of the event to confirm the status. It is your responsibility to confirm status.

- Should a viewing session be cut short by weather after it has begun, payment will be refunded on a pro-rata basis. Click here for more details.

- We cannot accommodate children under age twelve. All ticketed minor children must be accompanied by a ticketed responsible adult.

- The old dome is not ADA compliant, and the telescope is inaccessible to those who cannot climb the stairs to the observing deck. The Observatory is at 5,700 feet elevation, so anyone with serious breathing or heart problems should not attempt the trip.

- Photography is encouraged! Only rule is that the flash must be disabled when the dome lights are off for viewing.

- Alcohol is prohibited and no smoking or flames are allowed inside the dome at any time.

All ticket sales are final.