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

FOCUS MOTOR BRACKET AND GEARS

http://www.fingertechrobotics.com

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?