A quiet atmosphere and clear skies is the most decent time to watch with a telescope. It's not recommended to start watching immediately after sunset, because after sunset earth cools off quickly and it causes atmospheric turbulenes. The best time for watching is early morning. The best visibility is in the zentih, because an athmosphere is the thinnest there.
Place choice
Let you obtain the best results, you should watch skies out of the cities ? place, where the light pollution is the lowest. You should place the telescope to a stable surface so that telescope can't move and vibrate.
Telescope adjust temperature
Telescopes needs from 10 up to 40 minutes, let adapt to the air temperature. If you have telescope with an equatorial mount, you can to set up it while waiting for adapting to temperature.
Your adapt of eyes
Before you start watching, it's recommended that you 30 minutes stay in the dark, it will allow pupil of the eyes to increase to maximal its diameter. It's important that both your eyes are opened because its help to be freshly. If its mixes you, then should put your hand ahead the second eye.
Take of telescopes care of
After the watching you should always close all lids so your optics will be protected from undesirable dusts. Don't touch optics with fingers. If you want to clean optics, then you should use special brush or other cleaning tools. It's unnecessary to clean optics very often because dusts have minimal in influence for watching telescope.