Upcoming Programs

We do programs on Friday and Saturday nights from March through November, weather permitting.

Because we have limited space for cars, free parking passes are required on program nights.

Space is infinite, our parking area is not.

https://registration.jgap.org/

If the date you wish to go is marked “full” note that we often release additional passes for programs on the Wednesday before each weekend.

Note: The process has recently changed. The additional passes will be added to the single program listing, rather than appearing in a second listing down at the bottom of the list. We hope this will reduce confusion.

(The JGAP grounds are open for individual stargazing on non-program nights.  Please feel free to come on in.  Parking passes are not required.  You may bring chairs, telescopes, cameras and tripods if you wish.)


November 22-23  Jupiter Rises, our Year Sets
At the last scheduled program of our year, the giant planet Jupiter Rises as soon as it is dark.  Come learn about it, and enjoy its companions Saturn and Uranus.  5:15 PM

Program at JGAP, Saturday November 23, CLOUDED OUT

Hi gang,

Tonight's forecast looks miserable for star gazing: cloudy, probably rainy, and cold.

Because our show is the universe itself, and we have no indoor space, we will be reluctantly cancelling the show.

For those of you who have joined us for successful programs this year, thank you! For the rest of you, we hope to see you in the future!

Our programs start back up on March 7, 2025.

Our parking

Because we have limited parking, free passes are required for our public programs on Friday and Saturday night. Passes for upcoming programs can be found at:

http://registration.jgap.org

If the date you wish to go is marked “full” note that we often release additional passes for programs on the Wednesday before each weekend. Note: The process has recently changed. The additional passes will be added to the single program listing, rather than appearing in a second listing down at the bottom of the list. We hope this will reduce confusion.

Space is infinite, our parking area is not.

Note: If (and only if) you are staying in the Hocking Hills State Park Cabins, or the Hocking Hills Lodge, you may walk over for the program without a pass.

Get the JGAP Astronomical Calendar for 2025!

The all new JGAP Astronomical Calendar for 2025 is now available at ETSY.COM.

This calendar features images taken by the astrophotographers at JGAP. It also is chock full of astronomical information, from the phases of the moon, to planetary events, to the birthdays of famous astronomical folk. There’s something almost every day to explore and learn.

https://www.etsy.com/listing/1801965401/the-2025-john-glenn-astronomy-park

JGAP is for Observing!

Remember, you can always use JGAP for independent stargazing when we’re not doing a program. Just enjoying the view of a star-spangled celestial sphere with your own eyes makes for a great night.

Try to help us keep the night sky dark by turning off your cars brights and then turning off your headlights as soon as you park.

Solar Max is Here!

On the night if May 10, from around 9:30 to about 11:00 the sky at JGAP (and pretty much everyone else in the USA) was filled with pink, red and green lights, from high energy particles getting trapped in Earth's magnetic field and slamming into the atoms in our upper, tenuous, atmosphere.

Since that date, Ohio skies have been graced by two more strong displays.

Why are we getting so many aurorae lately? We are, as of this month, experiencing Solar Maximum, the time when the sun is at its most active and it is spraying out more of the atoms which lead to aurorae back here on Earth.

Here's some recommendations if you want to see an aurora in the future:

Go to Spaceweather.com and read the forecast. This will give you an idea of what is coming up and what activity is probable. When conditions are particularly favorable I’ll post updates on our Facebook page and here on this website.

For up-to-the-minute forecasts, check out this graph- the “auroral oval” of predicted activity regularly (refreshing the page each time), and, if you, you see that giant green and red blob has reached down to at least northern Ohio (assuming you're in Ohio) then something is going on and you should go out and look.

Here's the link: https://services.swpc.noaa.gov/.../aurora-forecast...

Note that auroral forecasts in the media are often given for events that will produce aurorae only for regions that are far north of Ohio. In other words, they are often overly optimistic. It is best to watch the auroral oval and go out when the forecast is good for your particular region.

Bright aurorae in Ohio are very rare, with dramatic displays occurring only a few times per decade, on average. The good news is that the strong displays that we see at our latitude are often the most colorful.

Where to go:

Find a place away from direct lights. Away from the city is best. JGAP might work, but we often get very, very crowded when events like this take place (Sorry.) Do not come during the program time (8:00 PM - 11:00 PM or so) unless you have a parking pass for the show or you will be squeezing out people who have already reserved spots. (Space is infinite, our parking is not.)

If the moon is half-full to fully-full (somewhere between first quarter and full moon on your calendar) then going far into the country will not get you much improvement, as the bright moon itself is a source of light pollution.

When to go:

The intense displays of auroae do not always last a long time (The May 10 display was strong for about 90 minutes. or so). If you get in the car and drive a long way (say, to JGAP) by the time you arrive things may have calmed down and you may miss the best part of the show. Get out as soon as you can, find a place that is as nearby as possible, but still dark,

Importantly, take driving time into consideration . Literally >hundreds< of people arrived at JGAP after 11:30 on May 10, having set out an hour before, and missed the show because it had died down by the time they arrived.

What to bring:

Surprisingly many modern cell phones (especially the ones that have "night photography mode" do a great job with displays like this, and might actually reveal color when your eyes see only a diffuse grey blob. (Turn the screen brightness way down, though). This is one astrophotography situation in which they work great! Other than that, just your eyes and maybe some warm clothes and a folding chair are all you’ll need.

Do not bring:

A flashlight. That will ruin your night vision and you won't see it as well.

Good luck aurora chasing!

01. The Heart of the Milky Way

Support the Friends of the Hocking Hills State Park

Do you love the Hocking Hills State Park? Would you like to help projects that make HHSP an even better place? Do you love JGAP?

Then consider joining The Friends of the Hocking Hills State Park, an organization that supports projects like JGAP and other enhancements to the most beautiful park in Ohio.

http://www.friendsofhockinghills.org/

Join our Facebook and Instagram Communities

We have a Facebook page

https://www.facebook.com/JohnGlennAstronomyPark/?ref=bookmarks

… and an Instagram Page

https://www.instagram.com/jgastropark/

On both we are regularly featuring items of astronomical interest.

If you have questions that you’d like addressed in these feeds, feel free to Facebook Messenger them to us!

Get up-to-date information and astronomical news on our Facebook page

Predicting the Weather

The Clear Sky Clock

The chart below is an hour by hour prediction of how clear the skies will likely be over the coming two days. Cloud cover and transparency are the critical data points. In general, dark blue is best. If both transparency and Cloud Cover are indicated as dark blue, then skies are likely to be clear and filled with stars. Lighter colors are proportionally worse.

In recent months, the predictions of the Clear Sky Clock have been somewhat unreliable, so use at your own risk.

Astrospherics

Another great site for predicting conditions on an hour by hour basis is Astropherics, whose model of late is better than that of the Clear Sky Clock. Access JGAP’s location with this link:

Astropherics for Logan, OH

Weather.Gov

Finally, the best site for predicting the weather is the site from which all the data comes from in the first place, the National Oceanic and Atmospheric Administration’s forecast page. The best forecast for JGAP is the Logan, Ohio hourly pinpoint forecast. Find it here.

The most critical part of the forecast is the blue line which represents the predicted cloud cover for that hour. Generally 50% or higher is not good.