Bedienungsanleitung Celestron CPC Deluxe 800 HD - 11007 (Seite 33 von 50) (Englisch)

667030

Zoom out

Zoom in

Vorherige Seite

1/50

Nächste Seite

>> www.celestron.com

To accomplish this, you need to tighten the secondary collimation

screw(s) that move the star across the eld toward the direction of the

skewed light. These screws are located on the secondary mirror holder

(see gure 9-1). To access the collimation screws you will need to remove

the collimation screw cover to expose the three collimation screws

underneath. To remove the cover, place the tip of a at screwdriver

underneath the cover and twist until the cover lifts o. Make only small

1/6 to 1/8 adjustments to the collimation screws and re-center the star by

moving the scope before making any improvements or before making

further adjustments.

To make collimation a simple procedure, follow these easy steps:

1. While looking through a medium to high power eyepiece, de-focus a

bright star until a ring pattern with a dark shadow appears (see gure

9-2). Center the de-focused star and notice in which direction the

central shadow is skewed.

2. Place your nger along the edge of the front cell of the telescope

(be careful not to touch the corrector plate), pointing towards the

collimation screws. The shadow of your nger should be visible when

looking into the eyepiece. Rotate your nger around the tube edge

until its shadow is seen closest to the narrowest portion of the rings

(i.e., the same direction in which the central shadow is skewed).

3. Locate the collimation screw closest to where your nger is

positioned. This will be the collimation screw you will need to

adjust rst. (If your nger is positioned exactly between two of the

collimation screws, then you will need to adjust the screw opposite

where your nger is located).

4. Use the hand control buttons to move the de-focused star image to

the edge of the eld of view in the same direction that the central

obstruction of the star image is skewed.

5. While looking through the eyepiece, use an Allen wrench to turn the

collimation screw you located in step 2 and 3. Usually a tenth of a turn

is enough to notice a change in collimation. If the star image moves

out of the eld of view in the direction that the central shadow is

skewed, than you are turning the collimation screw the wrong way.

Turn the screw in the opposite direction, so that the star image is

moving towards the center of the eld of view.

6. If while turning you notice that the screws get very loose, then simply

tighten the other two screws by the same amount. Conversely, if the

collimation screw gets too tight, then loosen the other two screws by

the same amount.

7. Once the star image is in the center of the eld of view, check to see

if the rings are concentric. If the central obstruction is still skewed in

the same direction, then continue turning the screw(s) in the same

direction. If you nd that the ring pattern is skewed in a dierent

direction, than simply repeat steps 2 through 6 as described above for

the new direction.













Perfect collimation will yield a star image very symmetrical just inside

and outside of focus. In addition, perfect collimation delivers the optimal

optical performance specications that your telescope is built to achieve.

If seeing (i.e., air steadiness) is turbulent, collimation is dicult to judge.

Wait until a better night if it is turbulent or aim to a steadier part of the

sky. A steadier part of the sky is judged by steady versus twinkling stars.



You will nd that additional accessories enhance your viewing pleasure

and expand the usefulness of your telescope. For ease of reference, all

the accessories are listed in alphabetical order.

 This accessory is an Amici prism

arrangement that allows you to look into the telescope at a 45° angle

with images that are oriented properly (upright and correct from

left-to-right). It is useful for daytime, terrestrial viewing.

 Like telescopes, eyepieces come in a variety of designs.

Each design has its own advantages and disadvantages. For the 1.25”

barrel diameter there are four dierent eyepiece designs available.

 Plössl eyepieces have a 4-element lens designed for

low-to-high power observing. All are fully multi-coated for maximum

light transmission. These Plössls oer razor sharp views across the entire

eld, even at the edges! In the 1.25” barrel diameter, they are available in

the following focal lengths: 3.6 mm, 6 mm, 8 mm, 10 mm, 13 mm,

17 mm, 25 mm, 32 mm and 40 mm.

 The newly enhanced X-Cel LX eyepiece series is what you’ve

been waiting for in a high quality eyepiece for planetary viewing. With

a brand new sleek and robust design and a twist-up eye guard, these

eyepieces are especially designed for comfort and ease of use. They also

have a wide eld of view of 60° and 6-element

fully multi-coated optics for magnicent wide

eld performance. X-Cel LX eyepieces are

parfocal and require little to no focusing when

changing from low to high power. The X-Cel LX

series is oered in the following seven sizes:

2.3 mm, 5 mm, 7 mm, 9 mm, 12 mm, 18 mm and

25 mm. Celestron Ultima LX Series

parfocal eyepieces feature wide elds of view for

high and low magnications. 70 º eld of view

for high and low magnications and extendable

twist-up eyecups - Good for eyeglass wearers.

Available in the following focal lengths: 5 mm, 8 mm, 13 mm, 17 mm,

22 mm and 32 mm.

 This multipurpose 12.5 mm illuminated

reticle can be used for guiding deep-sky astrophotos, measuring position

angles, angular separations and more. The laser etched reticle provides

razor sharp lines, and the variable brightness illuminator is completely

cordless. The Micro Guide Eyepiece produces 224 power when used with

the CPC 1100 at f/10 and 163 power with the CPC 800.

Celestron CPC Deluxe 800 HD - 11007 Seite 33

Brauchen Sie Hilfe? Stellen Sie Ihre Frage.

Missbrauch melden von Frage und/oder Antwort

Art des Missbrauchs:

Forenregeln

Neu registrieren

Das Handbuch wird per E-Mail gesendet. Überprüfen Sie ihre E-Mail.

Ihre Frage wurde zu diesem Forum hinzugefügt

Info