Small lights are appearing all over the screen

The stars will always be "points in the sky" no matter what telescope.
The stars should be sharp, focused points in the center of view (more blurry towards the edges because of the stock eyepieces and the fast telescope mirror) if not, the telescope may need collimation. (look at instructions and/or search online. Plenty of instructions on the net.)

1. Get Stellarium or another fine astronomy program
2. During the day, point the telescope at a part of the landscape about 100 yards away.
3. Use the lowest power eyepiece (highest number) in the focal tube.
4. Center the landscape object in the telescope.
5. Align the finder scope so that it points exactly where the main telescope is.
6. At night, leave the scope out to reach thermal equilibrium (about an hour for small reflectors and refractors)
7. If the scope is on a EQ mount, polar align.
8. Point the finder at the moon. The moon should be in the main scope also.
9. Practice finding the moon before you start on the planets
10. Once you are comfortable with the moon and planets, you can go for the deep sky objects

Look to see if that box has PIP--it may be engaged and if so a small picture in one of several places on the screen.

The atmosphere is the mixture of gas molecules and other materials surrounding the earth. It is made mostly of the gases nitrogen (78%), and oxygen (21%). Argon gas and water (in the form of vapor, droplets and ice crystals) are the next most common things. There are also small amounts of other gases, plus many small solid particles, like dust, soot and ashes, pollen, and salt from the oceans.

The blue color of the sky is due to Rayleigh scattering. As light moves through the atmosphere, most of the longer wavelengths pass straight through. Little of the red, orange and yellow light is affected by the air.

However, much of the shorter wavelength light is absorbed by the gas molecules. The absorbed blue light is then radiated in different directions. It gets scattered all around the sky. Whichever direction you look, some of this scattered blue light reaches you. Since you see the blue light from everywhere overhead, the sky looks blue.

As you look closer to the horizon, the sky appears much paler in color. To reach you, the scattered blue light must pass through more air. Some of it gets scattered away again in other directions. Less blue light reaches your eyes. The color of the sky near the horizon appears paler or white.

Your DLP chip is failing. The tiny micro mirrors within this chip are stuck. More white dots will appear over time until it looks like a star field on your screen. Most places will tell you that you need a new light engine, however you can replace the DLP chip itself and it will take you about 30 mins. You can find the chip online for around $349 but I think I have DLP chip you need brand new for $225. If you are interested in this contact me. [email protected]

Stars are ALWAYS pinpoints of light when the scope is focused no matter how much magnification is applied.

You are NOT focused properly -- when you are you cannot see the secondary mirror or the "spider" bracket that holds the mirror.

You will NEVER see a star as a disk, only as a pinpoint light. If you are seeing what looks like a donut with a dark center you are not focused.

hi, i am del and the problem i face is the screen appears dark with circular dots resembling stars in the sky on a dark night. images cannot be viewed and when i click there appear some horizontal lines. what could be the problem? Can you help please? Rgds del

You do not need an erecting prism to view objects at night. These are used if you wish to view terrestrial objects since it turns them right side up.

If you have a reflecting telescope (it uses mirrors) it's normal to not use an erecting prism or as they are also known as star diagonals. Objects will appear inverted and that's normal. A refracting telescope (no mirrors, just lenses) will also invert the image but it is quite often used with a star diagonal to make it easier to view. There are many other types of telescopes that use a combination of mirrors and lenses.

I hope this helps.

-jodair

You can slow down dew forming on the mirror by NOT pointing the telescope toward the sky during cool-down-- just leave it parallel to the ground. Same goes for your eyepieces -- leave them covered, or inside a case.

This is the same problem as other posts have mentioned about the right side of the screen having a bluish-balck stripe down the side of the screen. Here's what's happening. There's a small light tunnel which has 4 very small mirrors located just behind the color wheel. The lamp shines light through the color wheel as it turns and the light goes through this small tunnel and is then relected off several mirrors before it is projected through the lens and onto the screen. Optoma apparently did not use a very good heat resistant expoxy glue when they assembled these mirrors and over time the mirrors drop down causing a shadow effect on the screen. It can be repaired without paying some repair shop a small fortune. Previous posts have a solution from another contributer whihc includes photos. I had to repair mine and it's worked fine since I used a decent expoxy to hold the mirrors.