APPENDIX C: Using Starfinder to Enter Celestial Coordinates

Although Starfinder's database contains more than 1400 objects (stars, nebulae, planets, etc.) that you can observe, you may eventually want to view objects that are not part of the database. Starfinder provides a feature that allows you to enter an object's R.A and Dec coordinates in the "User: Objects" option of Starfinder's Object menu, and then will automatically slew the telescope to the user-entered coordinates.

In order to use this menu option, you first need to look up the R.A and Dec coordi- nates of the object or objects you wish to observe. Check out your local library, com- puter store, or bookstore for astronomy books, CD Roms, or magazines (such as Sky

&Telescope or Astronomy), to find coordinates of celestial objects. A list of the coor- dinates of 14 common stars are printed at the end of this manual; see "STAR LOCA- TOR," page 46.

The objects/coordinates you enter become part of your own permanent database, called "User Objects." You may use this menu to view these object as often as you like, but the objects' coordinates just need to be entered once.

To enter coordinates of an object into the "User: Objects" option of the Object menu:

1.Make sure Starfinder has been initialized (see "INITIALIZING STARFINDER," page 17) and the telescope has been aligned (see "ALIGN YOUR TELESCOPE USING STARFINDER," page 20).

2.After the telescope is aligned, "Select Item: Object" displays. (If necessary, use the Scroll keys to scroll through the menus, as previously described, to find this option.) Press ENTER.

3."Object: Solar System" displays. Keep pressing the Scroll Up key until "Object: User Object" displays and press ENTER.

4."User Object: Select" displays. Press the Scroll Down key once. "User Object: Add" displays. Press ENTER.

5."Name" displays on the top line and a blinking cursor on the second line. Use the Arrow keys (as previously described) to enter the name of the object you wish to add to the database. When you are finished, press ENTER.

6."Right Asc.: +00.00.0" displays. Use the Arrow keys to enter the digits for the Right Ascension (R.A.) coordinate of your object. If necessary, use the Scroll Keys to change "+" to "-." When you are finished, press ENTER.

7."Declination: +00°.00'" displays. Use the Arrow keys to enter the digits for the Declination (Dec) coordinate of your object. If necessary, use the Scroll Keys to change "+" to "-." When you are finished, press ENTER.

8.Starfinder then prompts you to enter the Size of the object. This step is optional. Use the Arrow keys to enter this information, if so desired, and press ENTER to go to the next display. If you do not wish to enter this information, simply press

ENTER.

9.Starfinder then prompts you to enter the Magnitude of the object. This step is also optional. Use the Arrow keys to enter this information, if so desired, and press ENTER to go to the next display. "User Object: Add" displays again.

To GO TO a user-entered object:

1.With "User Object: Add" displayed, press the Scroll Up key once. "User Object: Select" displays. Press ENTER.

2.Use the Scroll keys (if necessary) to scroll to the desired object. Press ENTER.

3.The name of the object and the R.A. and Dec coordinates display.

4.Press GO TO and the telescope slews to the object.

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Meade 4504 instruction manual Appendix C Using Starfinder to Enter Celestial Coordinates, To GO to a user-entered object
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4504 specifications

The Meade 4504 is a notable member of Meade Instruments’ extensive line of telescopes, designed for both beginners and experienced astronomers. This telescope is known for its user-friendly features and impressive optical performance, making it an excellent choice for stargazers keen on exploring the night sky.

One of the key features of the Meade 4504 is its 4.5-inch aperture, a critical factor that determines the amount of light the telescope can gather. This larger aperture allows users to observe fainter celestial objects, from nebulae to distant galaxies, with clarity and detail. The telescope is equipped with a Newtonian reflector design, which utilizes a primary mirror to collect light and a secondary mirror to direct it to the eyepiece. This design effectively eliminates chromatic aberration, offering sharp and crisp images.

The Meade 4504 also boasts a mount that is robust yet user-friendly. It typically comes with an Altazimuth mount, which allows for smooth movement both vertically and horizontally. This makes it easier to track celestial objects as they move across the sky. The mount's stability is crucial during high-magnification viewing, as it minimizes vibrations and provides a steady image.

A standout feature of the Meade 4504 is its ease of assembly and operation. Designed with beginners in mind, it usually includes a straightforward setup guide that allows users to get their telescope ready for use quickly. Additionally, the telescope often comes with a finderscope, which helps in locating objects in the night sky, a crucial tool for novice astronomers still learning to navigate the cosmos.

In terms of accessories, the Meade 4504 often includes a variety of eyepieces, allowing users to switch magnifications for different viewing experiences. These eyepieces enhance the versatility of the telescope, catering to varied interests, whether it's observing planets within our solar system or examining the details of various star clusters.

Overall, the Meade 4504 represents a balance of quality, convenience, and affordability, making it an ideal choice for anyone looking to embark on a journey of astronomical discovery. It effectively brings the universe closer to home, allowing enthusiasts to explore the wonders of space with ease. Whether you are a first-time observer or someone with a passion for celestial exploration, the Meade 4504 offers a remarkable gateway to the night sky.
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