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In the event that polar alignment is lost
: Hercules cluster M13
The result is the highest visual contrast achievable in an O-III filter
The 102SLT offers a 63% increase in image brightness over 80 mm models
9 for respectable speed
Used Celestron Dew Heater Ring, 6" Mount In the event that polarPRICE DROP! WAS $30; NOW JUST $20! Condition: This is a used Celestron 6" dew heater ring in excellent condition. It includes all accessories and looks like it was hardly, if ever taken out of the box used. Note: A separate dew heater controller and power source are required to utilize the heater ring. Heater ring provides the most efficient heating directly to the corrector lens to prevent the formation of dew Permanently mounts to your existing
US$ 116.47
US$ 249.50
US$ 117.18
