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and shock-resistant
It is perfect for any application where more power is desired including observing globular star clusters
and durable enhanced multilayer deposition (EMD) coatings
This effectively suppresses sodium vapor lamps from street lighting and greenhouses (assimilation light)
This is a field flattener for refractor-type telescopes with a focal ratio of f/5 to f/7
HR Variable Coma Corrector (2-inch) Focal Length_2. 11mm - 20mm and shock-resistantThis model does not come with the adapters that allow for a direct screw on connection to a camera. It can be used with a camera by using a 2 inch to 1. 25 inch adapter, SKU 510365, and the appropriate T2 adapter for your camera. After hours at the eyepiece, you finally get to view the fruits of your astrophotography labors. The stars in the center of the field pop like brilliant precise points of light. But as you survey the image, you notice the
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