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This private, for the accuracy and completeness, no responsibility is assumed, telescope control comparison will serve to get you an overview of the
timeliness and functionality of different telescope controllers! The differences are enormous and some prices can IMHO not really justify! Good you did compare!

Comparison of well-known Steppercontrollers sorted by prices
Controller HEQ-5/6 MCU Update LittleFoot Vpower LittleFoot Elegance Powerflex MTS-3 SLP HEQ-5/6 SkyScan Powerflex MTS-3 SDI LittleFoot Elegance Photo FS2
(Info!)
Pulsar + Handcontroller Dynostar X3
Display optional *8 optional *8 Yes *9 Yes optional (145€) Yes Yes Yes Yes
Alt/Az Mode *3 *3 *3 No No *5 Yes No No Yes *5
Microstepping Yes Yes Yes No Yes Yes Yes Yes Yes Yes
ST-4 Input Yes Yes Yes Yes Yes Yes Yes Optional (~80€) Yes Yes
RS232 Interface Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
USB Interface No No Yes No No No Yes No No No
Ethernet Interface No No No No No No Yes No No No
Video Interface No No No No No No Yes No No No
Firmwareupdates (Software) RS232 (Win) RS232 (Win) USB, RS232 (Win) *9 since V3.00 RS232 (DOS) USB, RS232 (Win) No Update over PC possible. RS232 (Win) RS232 (DOS)
Last Firmwareupdate Aug. 2008 Aug. 2008 Aug. 2008 *9 *9 Dec. 2004 Dec. 2009 May 2002 *9 Nov. 2004
Price Firmwareupdates free free free *9 free free free ~25 Euro free free
Goto Yes *6 Yes Yes No Yes Yes *7 Yes Yes Yes Yes
Goto Protocol LX200 LX200 LX200 *9 NexStar LX200 und Powerflex LX200 LX200 LX200 LX200 und Powerflex
Max. Gotospeed 100x 100x 100x *9 800x *9 640x *9 *9 *9
SD-Card interface Optional Optional Yes (up to 2GB) No No No Yes (up to 2GB) No No No
Internal Objectcatalogue Optional Optional Yes *9 Yes Optional (75€ + Display) Yes Yes Yes Yes
Objectcatalogue Size ~ 5 Million Objects ~ 5 Million Objects ~ 5 Million Objects *9 ~ 13.400 Objects *9 ~ 5 Million Objects ~ 3.800 Objects *9 ~ 16.000 Objects
Max. Objektanzahl several Million Objects several Million Objects several Million Objects --- not expandable not expandable several Million Objects not expandable *9 not expandable
Planet positions Optional Optional Yes No Yes No Yes *10 Yes Yes
Batterybufferered Realtimeclock Optional Optional Yes No No No Yes No Yes Yes
Kit with Motors not needed No No No Yes No No No No No
Motordrivers --- L6207 L6207 L6204 *9 L6205 L6258EX A3952SW *9 L6258EX
Max. Motorcurrent --- 3A 4A 500mA ~1,5A 500mA (new Vers. 1A) 3,2A ~1,8A 2A 1,6A (optional 3,2A)
Serial Autoguiding (Protocol) Yes (LX200) Yes (LX200) Yes (LX200) No No Yes (Powerflex) (LX200 *1) Yes (LX200) Yes (LX200) Yes (LX200) Yes (Powerflex) (LX200 *1)
PulseGuiding Yes (LX200) Yes (LX200) Yes (LX200) No No No Yes (LX200) No No No
ASCOM Driver Yes Yes Yes No Yes No Yes No No No
LX200 Autodetect No No No No *9 No Yes No No No
Fast Speedselects 3 3 3 2 *9 2 3 *9 2 2
Backlash compensation Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Periodic Errorcorrection Yes Yes Yes Yes Yes Yes Yes *11 Yes Yes
PEC Tablesize 256 256 256 64 *9 64 1024 *11 300 64
save PEC manuell Yes Yes Yes Yes *9 Yes Yes PEC can NOT be saved! Yes Yes
Autopark Function (PEC usw.) Yes Yes Yes No No No Yes No Yes No
Backup/Restore of PEC Table Yes Yes Yes No No No Yes No Yes No
PEC-Tracker No No No No No No Yes No No No
Connector for opt. Encoders No No No No No No Yes Yes Yes Yes
Digital Setting Circles No No No No No No Yes No *9 No
Polar Alignment No No No No No No Yes No *9 No
IntellyTrack® Yes Yes Yes No No No Yes No No No
GPS Connector Optional Optional Yes No No No Yes No Yes No
Refraction compensation No No No No No No Yes *9 Yes No
Home Position No No No No No No Yes No *9 *9
Auto Alignment No No No No No No Yes No *9 No
Focuscontrol Handcontroller and LX200 Handcontroller and LX200 Handcontroller and LX200 No No No Handcontroller, Robofocus and LX200 No No No
Stepperfocuser No No No No No No Yes (1,2A) No No No
Focus-Motordriver --- --- --- --- --- --- TMC 246A --- --- ---
Robofocus Relais No No No No No No Optional No No No
Temperature Sensor No No No No No No Optional No No No
Humidity Sensor No No No No No No Optional No No No
Dewpoint calculation No No No No No No Optional No No No
Dew Heater control No No No No No No Optional No No No
DCF77 Time and Date No No No No No No Optional No No No
DSLR Control Yes with DSLR Connector Yes with DSLR Connector Yes with DSLR Connector No *9 No Yes with DSLR Connector *9 No *9
Programmable exposure timer No optional Yes No No No Yes No No No
Saving exposure programms No optional Yes No No No Yes No No No
Sky Agent Optional Optional Yes No No No Yes No No No
Filter Wheel Support No No No No No No Optional No No N0
Filter Wheel Protocols --- --- --- --- --- --- TrueTech, SBIG, OES, DFM --- --- ---
Controllerconfiguration Win, Linux, PocketPC, (optional Display) Win, Linux, PocketPC, (optional Display) Win, Linux, PocketPC, Display DOS Display DOS Win, Linux, PocketPC, Display Display, DOS (Date 16.1.2000) Display, Win Display, DOS
Controller and Handcontroller in one Case --- Yes No Yes Yes Yes No No No Yes
Power Supply 12V 12V - 35V 12V - 35V *9 12V *9 12V - 30V 9V - 15V *9 *9
Kit available Yes Yes Yes No No No Yes No No No
Supportforum Yes Yes Yes No Yes No Yes No *9 No
Price incl. Motorcables 155,- € (Kit 99,- €) 199,- € (Kit 99,- €) Kit ~169,- € (Info!)
~350,- €
~400,- € *2 (Info!)
~430,- €
499 € (DIY Kit ~300,- €) ~870,- € 900,- € (550,- € *4) (Info!)
ab 900,- €
                     
*1 serial Autoguiding over the LX200 protocoll is only conditionally possible. The problem is well-known, an elimination of errors is, as i know, not planned.
*2 price contain 2 Sanyo Denki Steppermotors with Engineplate, a new front plate, as well as tools for the installation.
*3 a limitted Alt/Az operation is possible with IntellyTrack®.
*4 the Pulsar is available, for PC Freaks :-), without the Handpaddle. The price without Handpaddle amounts to 550.- €
*5 is available starting from the firmware V3.00b. A display is compellingly necessary (total price 575.- €).
*6 The transaction of the Tube (DEC swap) is supported by the Windows PC Software, but the Handcontrollerupdate is, for more comfort, suggested. The remote control (Goto), also without the Handcontrollerupdate, over the PC or PDA is working just fine.
*7 The transaction of the Tube (DEC swap) is not supported by the DOS PC Software and is realized thru a very small DIP Switch (DIP10). The Controller must be Power cycled for that function to work. The remote control (Goto) over the PC, without DIP10, is not possible. Because of the size of DIP10 (with gloves not useable) the optional Display is required for Goto.
*8 The MCU Update and the LittleFoot Controller can use a PocketPC for a Display as well. The advantage is described in the Forumtopic.
*9 I do not know this information so please check by your self. Shurely i would be appreciative for additional informations!
*10 As the FS-2 can't keep the time and location cords, no battery buffered realtime clock, and this data get lost if you turn the controller of you need to set the time, date (in UTC) and location before you can start a planet goto! Also the planet calculation seem to be wrong as written here! Error correction? None, see last Firmwareupdate!
*11 The homepage of the creator hold a lot different informations. Over Starfriends and throu discussion forums i heared a lot different things as well. As Michael Koch (FS2), acting under false identity, did already go to court because of this comparison, he looses the claim, i do not want to write something where i am not shure of. What i heard and read vary so much that i do not know what to write in this fields. I do not know what i can believe or not so i leave this fields, to prevent additional claims, unanswered!

If you know further well-known controllers with technical data, I would extend the table gladly!

Copyright © 2006 by Anand Rajiva , E-Mail: astronomie@rajiva.de