Upload
others
View
12
Download
3
Embed Size (px)
Citation preview
ASTROPHOTOGRAPHYHARDWARE PROJECTS
GLENN NEWELL
9-6-2014
AGENDA
• Mount Belt Kit
• Focus Motor Mount and Timing Belt & Gears
• DSLR Liquid Cooling
• Guide Camera Liquid Cooling
• Power Supply & USB HUB
HTTP://ROWANASTRONOMY.COM/PRODUCTSA1.HTM
CANON T3I LIQUID COOLING
Let’s get this cold
Cut Thermal Access Hole Here
FILL HOLE WITH THERMAL PAD AND COPPER SHIMS
COLD WATER BLOCKS AND HEATSINK
Fits in LCD Cavity and presses against Thermal Pad
Bolts into Tripod Mount
COOLER BAG
Two Water Blocks on Heatsink
Purple Tape is just a non metallic surface to read temp. via infrared
Soft cooler bag also has fan andradiator
CAMERA IN THE BAG
CAMERA IN FOCUSER
BAG WEIGHT SUPPORTED FROM DOVETAIL MOUNT
WHOLE RIG WITH DSLR AND GUIDE CAMERA COOLING
ICE CHEST
Pumps
Input, Output, and Ice Melt Overflow outlet
Electronics and Power Conversion
GUIDE CAMERA COOLING COIL
FINISHED GUIDE CAMERA COOLING
COOLING RESULTS
• DSLR Cooled to 41 Degrees F during 8 minute exposures
• As told by EXIF data
• As opposed to 80-90 Degrees F with no cooling
• Much Less Noise!
• Autoguiding improvements
• More Stable SNR
• Higher SNR values at shorter exposure times
• I Use about 4 lbs. of Ice an hour, or a 20 lbs. bag in a night of imaging
POWER CONVERSION ETC.
12v 5 amp supply for @ home
12v to 5v converterfor USB HUB
12v to 7.5v converterfor DSLR Camera
USB HUB
USB to RS232for mount control
USB Focus Motor Controller
QUESTIONS?