During my recent vacation, I happen to have my first experience with the telescope and I must say it was astonishing. The hotel, where I was staying, had a beautiful lawn just next to the beach, which essentially meant a fully open sky and that too without much illumination around. As part of the guest entertainment programme, the hotel had invited one of the astronomy enthusiast to help the guest with stargazing. The person had brought a good telescope for this purpose and was using it to show the planets like Saturn and Moon. Unfortunately, we didn't have a clear sky that day because of the impending monsoons. It had rained just a day before and the sky was still a bit cloudy. However, we could see the Moon and the Saturn very easily. The Moon had a beautiful hallow with diameter of around 20 feet and at the edge Saturn was shining. The person started with showing Saturn through the telescope. Initially he used lesser magnification as the queue was long. Now, you would say what...