The Astromaster 130 AZ Telescope is a better telescope because it has better quality optics. The advantage of the Powerseeker 127EQ telescope is that it comes with an equitorial mount. … If you could spend the money I would suggest the Astromaster 130EQ telescope, then you would have better optics and a better mount.
In the same way What is collimating a telescope?
Collimation is the process of aligning all components in a telescope to bring light to its best focus. … Mechanical collimation is necessary when the physical components in your scope don’t line up properly — a focuser isn’t square to the tube, a mirror isn’t centered in the tube, or a secondary mirror is misaligned.
Subsequently, What type of telescope is a Dobsonian? A Dobsonian is a reflecting telescope (uses a mirror, not a lens) in the same design as a Newtonian telescope (concave collecting mirror is at the rear of the telescope tube, eyepiece is on the side of tube, up near the front).
What does collimate mean?
verb (used with object), col·li·mat·ed, col·li·mat·ing. to bring into line; make parallel. to adjust accurately the line of sight of (a telescope).
Why does my telescope look blurry?
Too High Magnification
Too high a magnification is the leading cause of most telescope images being too blurry to be classified accurately. Any magnification above 200X may make images unclear in certain atmospheric conditions. The magnification on a humid summer night will not be the same as during a winter night.
How do you collimate a Celestron Newtonian telescope?
To get your telescope well collimated, here is what you need to accomplish:
- Step 1: Center the secondary mirror on the axis of the focuser drawtube.
- Step 2: Aim the eyepiece at the center of the primary mirror.
- Step 3: Center your primary mirror’s sweet spot in the eyepiece’s field of view.
Are Dobsonians good for planets?
Dobsonian scopes can be adapted for effective planetary imaging. … This means that large aperture and low-cost Dobsonians can often yield great planetary images.
Which is better Dobsonian or Newtonian?
This makes the Dobsonian more robust, and better for carrying around without worry of damaging your telescope. Dobsonian tubes are twice the length of some standard Newtonians, as a Dob uses a flat secondary mirror as opposed to curved.
What is a Newton reflector?
The Newtonian telescope, also called the Newtonian reflector or just the Newtonian, is a type of reflecting telescope invented by the English physicist Sir Isaac Newton (1642–1727), using a concave primary mirror and a flat diagonal secondary mirror.
How do I know if my telescope needs collimation?
You want to see a diffraction pattern of concentric circles appear around it. Basically, this refers to circles around the star that might look a little wiggly. If the circles you see are not concentric, then your telescope needs to be collimated.
What is the collimation error?
The error in alignment between the optical axis of a telescope and the declination axis of its equatorial mount; the two should be exactly perpendicular if the telescope is to track stars precisely.
What does a collimating lens do?
Collimating lenses are curved optical lenses that make par- allel the light rays that enter your spectrometer setup. These lenses allow users to control the field of view, collection effi- ciency and spatial resolution of their setups, and to configure illumination and collection angles for sampling.
Why can’t I see planets through my telescope?
Planets are small and far enough away that they will never fill a significant portion of your field-of-view, even at you scope’s highest usable magnification. … For example, many of Celestron’s basic telescopes come with a 10mm eyepiece as the shortest focal length in the box with the new scope.
Why is my telescope not magnifying?
Typically, because the radius of the primary is fixed, you need a secondary with a shorter focal length to increase the magnification. Of course, that makes it harder to focus. The “resolving power” of a telescope is proportional to the radius of the primary.
How do you focus a Celestron telescope?
Focus your telescope. Once you have your telescope pointed at the desired object to view, look through the eyepiece and turn the knob located just below the eyepiece. Turning clockwise focuses farther than the current focal level, while counterclockwise focuses closer. Change your magnification level.
Why can’t I see anything through my telescope?
If you are unable to find objects while using your telescope, you will need to make sure the finderscope is aligned with the telescope. … Once the crosshairs are centered on the same object you are viewing through the telescope eyepiece, the alignment of the finderscope is done.
How do you know if your telescope needs collimation?
You want to see a diffraction pattern of concentric circles appear around it. Basically, this refers to circles around the star that might look a little wiggly. If the circles you see are not concentric, then your telescope needs to be collimated.
Can you see Saturn with binoculars?
Saturn. Saturn is the second largest planet in our solar system and is famous for its rings. Because of these, it appears as an oval shape viewing it through most regular binoculars. … Like Jupiter, Saturn has cloud tops, but you need a large aperture telescope to see them.
What type of telescope is best for viewing planets?
Both refractor and reflector telescopes are best for viewing planets. A good quality telescope with an aperture of 3.5” to 6” will give a beginner great views.
How big of a telescope do I need to see Saturn?
The rings of Saturn should be visible in even the smallest telescope at 25x [magnified by 25 times]. A good 3-inch scope at 50x [magnified by 50 times] can show them as a separate structure detached on all sides from the ball of the planet. Want to see Saturn’s rings? First, you need to find Saturn in the sky.
What is a German equatorial mount?
German equatorial mounts or GEMs track an object using constant speed movement on one axis that is oriented parallel to the Earth’s axis of rotation. This makes the design ideal for astrophotography.
What is a catadioptric telescope?
Catadioptric (or compound) telescopes utilize both refractive (lenses) and reflective (mirrors) elements to bring an image into focus. Many catadioptric designs feature folded optics, which keeps the overall length of the tube very short in comparison to similar-aperture refractors and reflectors.
Can you use a Dobsonian telescope for terrestrial viewing?
If you’re willing and able to put up with the operating difficulties, with the necessity to flip the image around, etc, then I guess that indeed a large dobsonian could surpass anyone’s little binoculars in a terrestrial context. But very large magnification always reduces the field of view.
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