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CGEM Series Computerized Telescopes

Overview

The CGEM™ mount has a fresh, attractive, bold appearance and is capable of carrying Celestron’s higher-end SCT optical tubes (up to 11") securely and vibration free which is ideal for both imaging and visual observing. 

Ergonomic Design - CGEM was designed to be ergonomically friendly with large Altitude and Azimuth adjustment knobs for quick and easy polar alignment adjustment.  The internal RA and DEC motor wiring provides a clean look and an easy and trouble free set up.

Innovation - The CGEM series has a new innovative Polar alignment procedure called All-Star™ (patent pending). All-Star allows users to choose any bright star, while the software calculates and assists with polar alignment.  Another great feature of the CGEM, sure to please astroimagers, is the Permanent Periodic Error Correction (PEC) which will allow users to train out the worm gears periodic errors, while the mount retains the PEC recordings.

Performance - For objects near the Meridian (imaginary line passing from North to South), the CGEM will track well past the Meridian for uninterrupted imaging through the most ideal part of the sky. The CGEM mount has a robust database with over 40,000 objects, 400 user defined programmable objects and enhanced information on over 200 objects.

Celestron's CGEM mount is the perfect fit between the Advanced Series and CGE Series.  Offering the portability of the Advanced Series and the precision of the CGE.

 
CGEM - 800
sku: 11097
price: $2,099.00 USD
CGEM - 800
CGEM - 925
sku: 11098
price: $2,699.00 USD
CGEM - 925
CGEM - 1100
sku: 11099
price: $2,999.00 USD
CGEM - 1100
CGEM Computerized Mount
sku: 91526
price: $1,399.00 USD
CGEM Computerized Mount
OPTICAL DESIGN Learn More 8" Schmidt-Cassegrain 9.25" Schmidt-Cassegrain 11" Schmidt-Cassegrain N/A
APERTURE Learn More 203.2 mm (8 in) 235 mm (9.25 in) 280 mm (11.02 in) N/A
FOCAL LENGTH Learn More 2032 mm (80 in) 2350 mm (92.52 in) 2800 mm (110.24 in) N/A
FOCAL RATIO Learn More 10 10 10 N/A
FINDERSCOPE Learn More 6x30 6x30 9x50 N/A
MOUNT Learn More Computerized Equatorial Computerized Equatorial Computerized Equatorial Computerized Equatorial
OPTICAL TUBE Learn More Aluminum Aluminum Aluminum N/A
OPTICAL COATINGS Learn More Starbright XLT Coating Starbright XLT Coatings Starbright XLT Coatings N/A
EYEPIECE 1 Learn More 25 mm (0.98 in) 25 mm (0.98 in) 40 mm (1.57 in) N/A
MAGNIFICATION 1 Learn More 81 x 94 x 70 x N/A
STAR DIAGONAL Learn More 1.25 1.25 1.25 N/A
TRIPOD Learn More Adjustable, Stainless Steel Adjustable, Stainless Steel Adjustable, Stainless Steel Adjustable, Stainless Steel
CD ROM Learn More NexRemote control software with RS232 cable NexRemote control software with RS232 cable NexRemote control software with RS232 cable NexRemote control software with RS232 cable
POWER SUPPLY Learn More Car battery adapter Car battery adapter Car battery adapter Car battery adapter
HIGHEST USEFUL MAGNIFICATION Learn More 480 x 555 x 661 x N/A
LOWEST USEFUL MAGNIFICATION Learn More 29 x 34 x 40 x N/A
LIMITING STELLAR MAGNITUDE Learn More 14 14.4 14.7 N/A
EYEPIECE 1 FIELD OF VIEW Learn More 0.62 ° 0.53 ° 0.71 ° N/A
LIGHT GATHERING POWER Learn More 843 x 1127 x 1600 x N/A
ANGULAR FIELD OF VIEW Learn More 0.62 ° 0.53 ° 0.71 ° N/A
SECONDARY MIRROR OBSTRUCTION Learn More 2.7 in (68.58 mm) 3.35 in (85.09 mm) 3.75 in (95.25 mm) N/A
SECONDARY MIRROR OBSTRUCTION BY AREA Learn More 11.4 % 13.1 % 11.6 % N/A
SECONDARY MIRROR OBSTRUCTION BY DIAMETER Learn More 33.8 % 36.2 % 34 % N/A
RESOLUTION (RAYLEIGH) Learn More 0.69 arcsec 0.59 arcsec 0.5 arcsec N/A
RESOLUTION (DAWES) Learn More 0.57 arcsec 0.49 arcsec 0.41 arcsec N/A
GEAR Learn More Steel worm gear and 90mm pitch diameter brass worm wheel Steel worm gear and 90mm pitch diameter brass worm wheel Steel worm gear and 90mm pitch diameter brass worm wheel N/A
MOTOR DRIVE Learn More Low cog DC Servo motors with encoders, both axes Low cog DC Servo motors with encoders, both axes Low cog DC Servo motors with encoders, both axes Low cog DC Servo motors with encoders, both axes
COMPUTER HAND CONTROL Learn More Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons
SLEW SPEEDS Learn More Nine slew speeds: 5 °/sec, 2 °/sec, 1 °/sec, 64x, 16x, 8x, 4x, 1x, .5x Nine slew speeds: 5°/sec, 2°/sec, 1°/sec, 64x, 16x, 8x, 4x, 1x, .5x Nine slew speeds: 5 °/sec, 2 °/sec, 1 °/sec, 64x, 16x, 8x, 4x, 1x, .5x Nine slew speeds: 5 °/sec, 2 °/sec, 1 °/sec, 64x, 16x, 8x, 4x, 1x, .5x
TRACKING RATES Learn More Sidereal, Solar and Lunar Sidereal, Solar and Lunar Sidereal, Solar and Lunar Sidereal, Solar and Lunar
TRACKING MODES Learn More EQ North and EQ South EQ North and EQ South EQ North and EQ South EQ North and EQ South
ALIGNMENT PROCEDURES Learn More 2-Star Align, Quick Align, 1-Star Align, Last Alignment, Solar System Align 2-Star Align, Quick Align, 1-Star Align, Last Alignment, Solar System Align 2-Star Align, Quick Align, 1-Star Align, Last Alignment, Solar System Align AutoAlign, 2-Star Align, Quick Align, 1-Star Align, Last Alignment, Solar System Align
SOFTWARE PRECISION Learn More 24bit, 0.08 calculation 24bit, 0.08 calculation 24bit, 0.08 calculation 24bit, 0.08 calculation
DATABASE Learn More 40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects 40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects 40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects 40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects
POWER REQUIREMENTS Learn More 12 VDC 1.5 Amp 12 VDC 1.5 Amp 12 VDC 1.5A 12 VDC 1.5 Amp
GPS Learn More Optional CN16 Accessory Optional CN16 Accessory Optional CN16 GPS Accessory Optional CN-16 GPS Accessory
COUNTERWEIGHTS Learn More 1 x 17 lb 1 x 11 lb
1 x 17 lb
2 x 17 lb 1 x 17 lb
OPTICAL TUBE LENGTH Learn More 17 in (431.8 mm) 22 in (558.8 mm) 24 in (609.6 mm) N/A
TELESCOPE WEIGHT Learn More 88 lb (39.92 kg) 113 lb (51.26 kg) 120 lb (54.43 kg) N/A
TRIPOD WEIGHT Learn More N/A N/A N/A 17 lb (7.71 kg)
MOUNT WEIGHT Learn More N/A N/A N/A 41 lb (18.6 kg)
PAYLOAD CAPACITY Learn More N/A N/A N/A 40 lb (18.14 kg)
LATITUDE RANGE N/A N/A N/A 15-70 degrees
WEIGHT Learn More N/A N/A N/A 75 lb (34.02 kg)
 

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Images

Closest Mars for 60,000 years

Closest Mars for 60,000 years

I was going through all my photo files and I came upon this image I took on Aug, 27 2003, I satayed up that night taking photo after photo. Some good but most not so good. This one I loved because of what the clouds were doing, that is being by the ocean for yah

captured using CGEM - 800

submitted by phillymanjaro
M45_moon _venus

M45_moon _venus

I was checking out the settings on the camera and to my surprise M45 was in there, pretty cool in my world

captured using CGEM - 800

submitted by phillymanjaro
Saturn

Saturn

less then ideal conditions

captured using CGEM - 800

submitted by star surveyor
Saturn april 28th

Saturn april 28th

My best saturn image yet.

captured using CGEM - 800

submitted by corpusse
Close up shot

Close up shot

Sony Camera stuck in the ST-80 for the shot

captured using CGEM - 800

submitted by phillymanjaro
Full shot with me

Full shot with me

ADM gear for the Orion ST-80, the sony is in the tube for the shot, I am looking forward to getting the new camera, auto guider and a new laptop to run Starry Nights

captured using CGEM - 800

submitted by phillymanjaro
My Scope at my library

My Scope at my library

My Scope waiting for action

captured using CGEM - 800

submitted by Manny GB
NGC6946

NGC6946

Took the 5mn exposures to clear the light pollution "dome" then switched to 6mn. My first photo run w/the new CGEM, the star shape is so-so (5mn was good, at 6mn there was a bit of movement). As they say all in good time.

captured using CGEM - 800

submitted by ladb
Messier 11 the Wild Duck Cluster

Messier 11 the Wild Duck Cluster

The Wild Duck Cluster (also known as Messier 11, or NGC 6705) is an open cluster in the constellation Scutum. It was discovered by Gottfried Kirch in 1681. Charles Messier included it in his catalogue in 1764.
The Wild Duck Cluster is one of the richest and most compact of the known open clusters, containing about 2900 stars. Its age has been estimated to about 220 million years. Its name derives from the brighter stars forming a triangle which could represent a flying flock of ducks.


-Desc Wiki

captured using CGEM - 800

submitted by John_Buonomo
Jupiter

Jupiter

This was a quick shot about 5 frames

captured using CGEM - 925

submitted by Jerome
moon

moon


captured using CGEM - 925

submitted by jabbb
Mars. First Attemp. Toronto Skies

Mars. First Attemp. Toronto Skies

First attempt on Mars. Seeing conditions were apparently good. It turns to be hazy in Toronto light polluted skies

captured using CGEM - 925

submitted by Manny GB
solarspot 1057

solarspot 1057


captured using CGEM - 925

submitted by juan roch
4thjuly

4thjuly


captured using CGEM - 1100

submitted by spike77
4thjuly

4thjuly


captured using CGEM - 1100

submitted by spike77
4th july

4th july


captured using CGEM - 1100

submitted by spike77
lighting

lighting


captured using CGEM - 1100

submitted by spike77
lighting

lighting


captured using CGEM - 1100

submitted by spike77
lightning

lightning

this was great show of power i never seen anything like this storm it was awesome had to hop in the truck and go down the road to try and get a shot i missed the best ones but i tried like hell

captured using CGEM - 1100

submitted by spike77
jupiter an moons

jupiter an moons


captured using CGEM - 1100

submitted by spike77
jupiter 7 20 10

jupiter 7 20 10


captured using CGEM - 1100

submitted by spike77
jupiter

jupiter


captured using CGEM - 1100

submitted by spike77
jupiter

jupiter


captured using CGEM - 1100

submitted by spike77
NGC 7000 (H-alpha)

NGC 7000 (H-alpha)

I decided to try and increase my imaging time by shooting in H-alpha light. Between the weather and the moon I was only getting out a few times a month, so I took the moon out of the equation. This is only one sub (no dks, flts, etc. thus the noise) taken out to practice processing. A proper stack will come later.

captured using CGEM Computerized Mount

submitted by ladb
NGC 6820

NGC 6820

First shot w/the modded camera and it took awhile to figure out the best way to process. I'm sure this is not the best way, but I'm at least headed in the right direction. Suggestions/critique welcomed. Marc

captured using CGEM Computerized Mount

submitted by ladb
Jupiter with Europa and Ganymede

Jupiter with Europa and Ganymede

Good conditions (for my location) made for a nice sharp image on this morning.

captured using CGEM Computerized Mount

submitted by Ted Judah
Sunspot 1072

Sunspot 1072


captured using CGEM Computerized Mount

submitted by syeather
Sunspot 1072

Sunspot 1072


captured using CGEM Computerized Mount

submitted by syeather
NGC 6820

NGC 6820

For my first time w/the mod'd camera it would have been easier to shoot a neb. in the middle of no where compared to a dense star field. At about75* it was difficult to tell where the noise stopped and the nebulosity started. PS the AT80 and the CGEM; match made in heaven.

captured using CGEM Computerized Mount

submitted by ladb
CGEM 1

CGEM 1

CGEM
BW Apo Triplett 100-600
Celestron ED 80-600
Atik 16 HR mit Atik Filterrad
SBIG ST-7

captured using CGEM Computerized Mount

submitted by astro_holzwurm
CGEM

CGEM

CGEM
BW Apo Triplett 100-600
Celestron ED 80-600
Atik 16 HR mit Atik Filterrad
SBIG ST-7

captured using CGEM Computerized Mount

submitted by astro_holzwurm
m31c-small.jpg

m31c-small.jpg

M31 do-overs. 20x30s exposures

captured using CGEM Computerized Mount

submitted by rumordude
NGC 6820

NGC 6820

Take two, a lighter hand at processing.

captured using CGEM Computerized Mount

submitted by ladb

Videos

2009 PATS Coverage


submitted by CelestronDotCom

Celestron at NEAF 2009 - Sky & Telescope


submitted by Sky & Telescope

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