Updating Nexstar SLT Hand Control (HC) and Machine Control (MC) Firmwares

Hand Control Firmware Update
1. Prepare the PC interface cable. http://www.nexstarsite.com/PCControl/RS232Cable.htm

2. Connect the HC port (RJ22) to PC the interface cable.

3. Download Hand Control Firmware Updates. http://www.celestron.com/c3/support3/index.php?_m=downloads&_a=view&parentcategoryid=7&pcid=0&nav=0

4. Run the HCupdate as Administrator and follow instructions. http://www.nexstarsite.com/OddsNEnds/HCFirmwareUpgradeHowToVersion4.htm

Machine Control Firmware Update
1. Prepare the PC interface cable. http://www.nexstarsite.com/PCControl/RS232Cable.htm

2. Connect the HC port (RJ22) to PC the interface cable.

3. Download Machine Control Firmware Updates. http://www.celestron.com/c3/support3/index.php?_m=downloads&_a=view&parentcategoryid=7&pcid=0&nav=0

4. Run the MCupdate as Administrator and follow instructions.  http://www.nexstarsite.com/OddsNEnds/MCFirmwareUpgradeHowTo.htm

Dual LAN setting and sharing

LAN card #1

1. Connect to the internet.
2. Automatic IP address.
3. Enable Internet Connection Sharing (ICS).

LAN card #2

1. Manual IP and subnet.
2. DNS is left blank.
3. Connect to router non-WAN port.

Wireless Router
*How to setup/access router when DHCP disabled.
*...
*...

C6 (even C8) SCT on Nexstar SLT mount

The answer is Yes, it is possible. I've been using the Nexstar SLT mount with a Celestron C6 OTA. Vibration during focussing could be an issue especially at very high magnification. Sometimes, it is kind of frustrating. Even a light touch on the focuser can cause vibration. However, I have since upgraded to motor focuser. It has been a pleasant viewing even at high magnification ever since.
 
http://www.astronomyforum.net/celestron-telescope-forums/110105-i-need-input-about-celestron-nexstar-127slt.html?langid=1    with photo.
http://www.astronomyforum.net/celestron-telescope-forums/116686-celestron-nexstar-slt-mount.html

http://www.cloudynights.com/ubbthreads/showflat.php/Cat/0/Number/2992447/Main/2911683
http://www.cloudynights.com/ubbthreads/showflat.php/Cat/0/Number/3117728/Main/3098047
http://www.cloudynights.com/ubbthreads/showflat.php/Cat/1,2,3,4,5,8,9,10/Number/3099833/Main/3092678

Nexstar SLT mount max. payload

The payload weight is defined by Celestron’s engineering/product development department as the load that is carried by the mount’s dovetail clamp.

These are the payload weights of (mostly) current mounts:

Mount	Payload (pounds)
CGE Pro	90
CGE	65
CGEM DX	50
CGEM	40
Advanced GT (CG-5)	35
NexStar 6/8SE	12
NexStar 4/5SE	10
AllView	9
SkyProdigy	8
NexStar SLT	8
LCM	5
Omni (CG-4)	20

http://www.celestron.com/c3/support3/index.php?_m=knowledgebase&_a=viewarticle&nav=0&kbarticleid=2400


Currently, I'm using Celestron C6 on Nexstar SLT mount. While the mount is able to function properly, vibration is a problem.

Polaris: North Star

Northern Hemisphere
Point the telescope in the general direction of Polaris (the North Star).  Remember that Polaris is straight north and is the same number of degrees above the horizon as your latitude on Earth.  In other words, if you live at 45 degrees north latitude, you would point the scope north and up at a 45 degree angle.

Ref: http://www.nexstarsite.com/Book/Updates/IndoorsAlign.htm

Robotic Arm Kit with USB PC Interface

http://www.maplin.co.uk/robotic-arm-kit-with-usb-pc-interface-266257
at Maplin

Nexstar PC interface serial cable

Handset Controller - RJ22 Telephone handset cable
PC Controller (controlling the mounth without HC) - RJ45
Connector to PC is DB9 serial connector


http://www.nexstarsite.com/

Calibre - ebook file format converter

http://calibre-ebook.com/

Convert *.epub to *.mobi to be read on Kindle

Lasik Dr Muhaya

http://www.drmuhaya.com/premium-lasik-promotion-dp1

RM6990 per pair

CHDK for Canon S90

1. Check S90's firmware version: http://chdk.wikia.com/wiki/FAQ#Q._How_can_I_get_the_original_firmware_version_number_of_my_camera.3F

2. Download CHDK for S90:http://mighty-hoernsche.de/

3. Use firmware update method to load CHDK. http://chdk.wikia.com/wiki/Bootable_SD_card

4. Create dual partition bootable SD card for auto loading. http://chdk.wikia.com/wiki/Using_SDMinste_to_Create_Dual_Partition_SD_cards


5. Swapping partition order: http://www.sfnomad.com/?p=80

6. Motion Detector script: http://chdk.setepontos.com/index.php/topic,471.msg21328.html#msg21328