![]() A matching dew/sun shield can be attached when needed and then inverted to store the lens without the additional length the dew shield provides. I calibrated and stacked the image with Astro Pixel Processor. Optical design: 51mm lens, in a sleek Petzval design, using Synthetic Fluoride (FPL53 and FPL51) glass for a full frame flat field image. RedCat 51II Body Design and Included Features The RedCat 51 Gen 2 body is made of a strong aluminum alloy and is anodized in a beautiful red color for strength and durability. Here’s the first image with around 37.8 hours of images. I picked a target that would fully fit into this wide field of view, the entire Elephant Trunk nebula. A quick Polar Alignment, and I was off imaging. Once set up to image, I placed it on my Celestron AVX mount, and loaded up EKOS to begin imaging for the evening. William Optics also offers DSLR adapters that attach to the back of the scope where you can hook up your Canon or Nikon camera with no additional spacers. ![]() To set up for imaging, I had to reach the prescribed back focus distance, and I used one 16.5 adapter, the filter wheel and space to sensor to achieve 55mm of distance. It makes the scope quite compact for traveling, and I intend to pair it with my Sky-Watcher Star Adventurer when I head out of town in the future. ![]() ![]() I had to unscrew it and reattach the other direction. It turns out that the scope shipped with the lens hood flipped around covering the focus. At first I couldn’t figure out how to focus.
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