Kenko Sky Memo Instructions
Hutech Corporation
©
2000
6
Troubleshooting
Below are some common problems encountered by photographers and some suggestions for troubleshooting a
setup:
Backlash in RA
This is not problem. A little
backlash is necessary for proper
gear operation.
Kenko tripod adjustment knob
keeps turning without moving
position
l
The setscrew holding the
knob has loosened.
l
Screw the knob back onto the
adjustment shaft (it is a left-
handed thread) until it
reaches the end of travel and
tighten the setscrew
Can’t see reticle pattern well
l
Polar scope is not focused.
l
Illumination is too low
l
Adjust focusing by turning the
eyepiece
l
Adjust illumination by turning
the VOL control
Stars are trailed
l
Clamp(s) not locked firmly
l
Polar alignment is off
l
Equipment flexure
l
Atmospheric refraction
l
Battery power drops too low
l
Camera or lens moved
l
Tighten clamps and recheck
before each exposure
l
Check polar alignment before
each shot
l
Watch balance when using
longer and heavier telephoto
lenses (use lens bracket).
l
Use a guide scope
l
Check to insure that the
motor is working properly,
use fresh batteries, and keep
batteries warm on cold nights
l
Check equipment position
before each shot to insure
tracker clearance. The arm
moves 15 degrees per hour.
Image is out of focus
l
Focus ring moves during
exposure
l
Film move moves against
pressure plate in high
temperature and humidity
l
Use tape to keep the camera
focus ring in position.
l
Shorten exposure times
l
Change to a different film
l
Use dry air purge for the
camera
