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The H-alpha nebula filters make astrophotography near cities possible and their use leads to surprisingly good image results despite the existing light pollution
Deepsky Planner
Before the introduction of the Dobsonian by John Dobson
L-Pro is the best choice for light pollution suppression
EXOS-2/EXOS-2GT Counterweight 9.9 Pounds - Black Focal Ratio_2. f/4.1 - f/6.5 The H-alpha nebula filters makeSupplemental 9. 9 lb. Counterweight for EXOS 2 EXOS 2GT Mounts. Includes locking knob.
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