Celestron C11-SGT User Manual download pdf (Page 11)

Celestron Technologies 9

EDGE

OPTICS

EDGE

OPTICS

Celestron Technologies

CelesTron’s revoluTionary skyalign

™

Aligning your telescope is easier and faster than ever! Simply input your

date, time and location (GPS models obtain this information automatically)

and then direct the telescope at any three bright stars or objects of your

choice. With Celestron’s revolutionary SkyAlign you do not need to know the

names of the stars and you can even use the Moon or bright planets! NexStar’s advanced computer

system will figure out which stars (or objects) were chosen and automatically align the telescope.

SkyAlign is standard with NexStar SLT

, NexStar

SE and CPC

computerized telescopes.

Forget pointing the telescope north or leveling the optical tube! Pick three stars, any stars and start

observing! The initial position of the telescope is irrelevant, giving you a fast and easy method for

aligning telescopes.

well how does It work? The NexStar software with SkyAlign simply calculates the angles

measured between the objects and compares them to the known angles between objects. Using

this method, the telescope determines what objects were chosen and will display which three

objects were aligned for conformation.

sTarbrighT xlT

– an opTiCal sysTem breakThrough

One of the most important factors in the evaluation of a Schmidt-Cassegrain

telescope’s optical system performance is its transmission – the percentage

of incoming light that reaches the focal plane. The advanced breakthrough

design of the XLT System accomplishes two crucial objectives – 1. To

develop a coating system that is optimized for visual use and, 2. To optimize

the coating system and optics for CCD/Photographic imaging.

The StarBright XLT High Performance Optical System design consists of:

1. unIque enhanCed multI-layer mIrror CoatIngs Our mirror coatings are made from the most

precise layers of Aluminum (Al), SiO2 (Quartz) and TiO2 (Titanium Dioxide). Reflectivity is

fairly flat across the spectrum, optimizing it for both CCD imaging and visual use.

2. multI-layer antI-refleCtIve CoatIngs Made from precise layers of MgF2 (Magnesium Fluoride),

and HfO2 (Hafnium Dioxide), which costs nearly $2,000 per kilogram. Hafnium results in a

wider band pass than Titanium, used in competitive coatings.

3. hIgh transmIssIon water whIte glass Our Schmidt-Cassegrain optical systems with StarBright

XLT coatings use Water White glass instead of Soda Lime glass for the corrector lens. Water

White glass transmits about 90.5% without anti-reflective coatings which results in 3.5% better

transmission than uncoated Soda Lime glass. When Water White glass is used in conjunction

with StarBright XLT anti-reflective coatings, the average transmission reaches a high 97.4% –

an 8% improvement.

These three premium components of our breakthrough StarBright XLT coatings result in one of

the finest most pristine coatings available worldwide. The peak transmission for the system is

89% at 520 nm and the overall system transmission is 83.5% averaged over the spectrum, from

400 to 750 nm.

nexremoTe

remoTe ConTrol sofTware

Celestron has been in the forefront of computerized

telescope technology for over two decades!

We have taken this expertise one step further

by introducing the NexRemote Telescope Remote Control Software. NexRemote allows the

user to control their Celestron computerized telescope from a personal computer. Every

function that can be done using the telescope’s hand control can now be easily duplicated

remotely from a PC or laptop. This software was developed for Celestron’s telescopes

that use the NexStar control system. These include the NexStar SLT

Series, Advanced

Series

™

, CPC Series and CGEM

™

Series (NexRemote ships standard with CPC and CGEM

Series and CGE Pro Mount).

NexRemote provides full emulation of every aspect of the Celestron Computerized Hand Control,

plus these additional powerful features:

NexRemote voice output – conveniently allows you to keep your eyes on the stars instead of

the LCD, by enabling speech support.

Select the objects you want to see and the order in which you want to see them.

Create and save custom tours using the NexTour feature.

Reduce the effect of your bright laptop screen illumination on your eyes using

Night Vision Mode.

Wireless control of the telescope with optional game pad support.

Use your own personal GPS device to interface with NexRemote using NexGPS.

You can even download the latest NexRemote updates online!

edge hd optICs

EdgeHD optics produce a focal plane more than three-times flatter than a standard Schmidt

Cassegrain telescope and dramatically flatter than other competing coma-free designs. This

guarantees you visibly sharp stars across some of the largest CCD chips available today. See

page 30 for more information.

all-star polar alIgnment teChnology

Select Celestron mounts can utilize a new innovative Polar alignment procedure called All-Star

™

All-Star allows users to choose any bright star from the hand control, while the software calculates

and assists with polar alignment.

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Celestron C11-SGT User Manual Page 11

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