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iOptron CEM40 User Manual

iOptron CEM40
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26
5.1.7. Custom Objects
This allows the storage of up to 60 user-defined objects, including comets.
5.1.8. Custom R.A. and DEC
Here you can go to a target by entering its R.A. and DEC coordinates.
5.2. Sync to Target
This operation will match the telescope's current coordinates to the Target Right Ascension and
Declination. It can be used to correct GOTO pointing error. After slewing to an object, press MENU - then
scroll to Sync to Target and press ENTER. Follow the screen to perform the sync. Using this function will
re-align the telescope to the selected object. Multiple syncs can be performed if needed.
Sync to Target” will only work after “Select and Slew” is performed. You can change the slew rate
to make the centering procedure easier. Simply press a number (1 through 9) key to change the speed. The
default slew rate is 64x.
Sync to Targetwill improve the local GOTO accuracy near by the synced star, which is useful for
finding a faint object nearby.
5.3. Alignment
5.3.1. Position of Polaris/SigmaOct
This function displays the position of the Pole Star in an iOptron
®
AccuAlign
TM
polar scope. In the
Northern Hemisphere the position of Polaris is displayed, while in the Southern Hemisphere the position of
Sigma Octantis is shown.
5.3.2. Polar Iterate Align
This alignment method allows you to polar align the mount even if you cannot view the Celestial
Pole. Press the MENU button, then select Alignmentand Polar Iterate Align”. The HC will display a list
of bright alignment stars near the meridian as Alignment Star A. Follow the HC instructions to move
Alignment Star A to the center of the eyepiece using a combination of the Latitude Adjustment Knob and the
“◄” and “►” buttons. Press ENTER to confirm the settings. Next, select a bright star that is close to the
horizon as Alignment Star B. Center it using the Azimuth Adjustment Knobs and the “◄” and “►” buttons
(the “
▲”
and “
▼”
buttons will not function). Press ENTER to confirm the settings.
The telescope will now slew back to Alignment Star A to repeat the above steps. The iteration can
be stopped when it is determined that the alignment error has been minimized. Press the BACK button to
exit the alignment procedure.
NOTE: It is highly recommended to use an eyepiece with illuminated crosshairs for accurate
centering.
NOTE: The movement of the alignment star in your eyepiece may not be perpendicular depending
on its location in the sky.
5.4. Settings
5.4.1. Set Time and Site
Refer to STEP 9 in Section 3.1.

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iOptron CEM40 Specifications

General IconGeneral
MountCenter-balanced Equatorial Mount (CEM)
Structure MaterialAll metal, CNC machined
Exterior finishAnodized red/black
Level indicatorLevel bubble
Dovetail saddle8" Losmandy D & Vixen
Hand ControllerGo2Nova® HC, 212, 000 objects database, star recognition
Cable managementYes
TripodLiteRoc 1.75" Stainless Steel(7kg), optional tri-pier
Max payload*40 lb (18kg), exclude counterweight
Payload/Mount weight ratio2.28:1
PECPPEC/Real time PEC
Tracking accuracy (PE)**<±7.5 arcsec p-p (CEM40, CEM40G), or <0.3 arcsec RMS (CEM40EC)
Motor resolution0.08 arc seconds
Slew speed1×, 2×, 8×, 16×, 64×, 128×, 256×, 512×, MAX(~4.5°/sec)
Latitude adjustment range0°~ 60° (special CW shaft mounting if <10° )
Azimuth adjustment range± 6°
Operation temperature-10°C ~ +40°C
Right Ascension worm wheelΦ110mm, 216 teeth aluminum
Declination worm wheelΦ110mm, 216 teeth aluminum
Counterweight shaftΦ28X280 mm, Stainless Steel (1.2 kg)
Counterweight11 lb (5 kg) X1
Motor drivePrecision stepper motor, 1.8º/128X micro-step
Meridian treatmentStop (0-14° pass), auto flip
Power consumption0.6A(Tracking), 0.9A(GOTO)
Power requirement12V DC 5A
AC adapter100V ~ 240V (included, indoor use only)
Polar ScopeInternal iPolarTM electronic polar scope
GPSYes
WIFIExternal (optional)
Guiding scope/cameraBuilt in guiding scope and camera, iGuiderTM (CEM40G)
Autoguide portST-4
Communication portUSB Port (on mount)
PC computer controlYes (ASCOM)
WarrantyTwo year limited
Weight and Dimensions IconWeight and Dimensions
Mount weight17.4 lb (7.9kg)
Mount base sizeΦ120 mm

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