Mount John vs Cowan's

Dark Sky Project runs both of these tours from the same lakefront base in Lake Tekapo (Takapō), and the choice comes down to age, budget and how much cold you will put up with. Book the Mount John Summit Experience, from $125 per person, if everyone in your group is 10 or older and you want to stand on the observatory summit at 1,029 m. Book the Crater Experience at Cowan’s Observatory, from $74 per person, if you have children aged 5 to 9, want a shorter night, or would rather be sheltered from the wind.

The two tours side by side

Both start with a naked-eye tour of the sky using a laser pointer before you move to the telescopes, and both ban flash photography. The difference is where you stand and for how long.

Setting: summit or crater

The Summit Experience takes you to the top of Mount John, where Ōtehīwai Mt John Observatory has operated since 1965 as the University of Canterbury’s astronomy field station. The public road is open only from 9 am to 4 pm, so after dark the tour bus is the only way up. You stargaze among working domes with the lake and village far below, and that setting is most of what the higher price buys.

Cowan’s Private Observatory sits about five minutes from the base. Its viewing craters are purpose-built to shelter you from wind and stray light, and the ride from the lakefront is short. You give up the summit view and gain a calmer, warmer place to look up.

Length and telescopes

At 1 hour 45 minutes including the bus, the Summit tour gives you more time under the sky and a wider range of instruments, up to the 16-inch in its dome. The Crater tour lasts 75 minutes, with telescopes from 9¼ to 14 inches and its own observatory dome. For first-timers the smaller instruments still show galaxies, star clusters and the Milky Way, and the shorter format suits younger children and anyone who tires in the cold.

Wind, cold and what to wear

This is where the two tours differ most on the night. Mount John is exposed, it holds the New Zealand record wind gust of 250 km/h, and spring (September to November) is the windiest season in the area. Down at the lake, July nights average −2.8 °C, and the summit is higher still. The Summit ticket includes an extreme-cold-weather jacket for the whole tour.

The Crater tour does not include jackets, so bring a warm coat, hat, scarf and gloves in every season, including summer. Even January nights at the lake average 8.5 °C. The craters take the edge off the wind, but you are still standing still outdoors for over an hour.

Children, mobility and weather

The Summit minimum age is 10, with one adult for every two children. The Crater welcomes children from five, which makes it the Dark Sky Project choice for most families with young children. If you are weighing family tours more widely, our guide to Tekapo stargazing with kids covers every operator.

On the summit you walk about 100 m up a gravel incline and climb steps in the dark, and the tour is not wheelchair accessible. For the Crater, wheelchair users can follow the tour transport in their own vehicle.

Weather is handled the same way on both. If cloud or wind stops the tour, you are offered an indoor Alternative Weather Experience, a reschedule, a three-year gift voucher or a full refund, and GetYourGuide bookings can be cancelled free up to 24 hours before. More on this in Tekapo stargazing in cloudy weather.

Which one to book

Couples and adult groups who came to Tekapo for the sky should book the Summit. It is the only tour on this site that stargazes from Mount John at night, and the jacket and bus are included. Our Mount John Observatory tour guide goes into more detail.

Families with children under 10 should book the Crater, and so should anyone on a tighter budget, travellers who feel the cold, and visitors using a wheelchair.

Families with children of 10 and over can choose either. If your children are happy in the cold, the Summit gives them the observatory. If not, the Crater is shorter and cheaper.

If neither suits, Chameleon Stargazing is the main alternative outside Dark Sky Project: from $74 per person, 90 minutes, children from five, with blankets, hot chocolate and edited photos of your group included, though you make your own way to the site. See our Chameleon Stargazing guide.

Whichever you choose, check availability for your first night in Tekapo, so a cloudy evening still leaves you time to rebook.