About this product
Part Number: L-RC51Ix
NEW updated RedCat v1.5 51 / 250mm f/4.9 Apo
This updated v1.5 RedCat features an integrated camera tilt adjuster, an updated mounting ring with longer dovetail (easier balancing) and a new focusing index. An optional saddle handle-bar is also now available.
The William Optics RedCat 51 APO is a 51mm f/4.9 Petzval refractor that features synthetic fluoride (FPL53 and FPL51) glass elements for a full frame, flat field image.
Provides high resolution images when used for astrophotography or wildlife photography.
It's fast f/4.9 focal ratio and compact size makes it ideal for convenient wide field astrophotography or piggybacking.
Incorporates a smooth helical focuser, a field rotator graduated by degree, a slot for 48mm filters and a reversible dovetail for either Vixen style* or Arca-Swiss mounting.
Telescope Field of View Simulator
What's in the box
- RedCat 51 f/4.9 scope
- Soft Carry Case
- Patented Bahtinov Mask
|Focal Length||250 mm|
|Objective Type||Petzval (4 elements in 3 groups) and Ohara FPL 53 ED element. |
|Image Circle||Φ 44mm (Full Frame)|
|Dimensions||225mm x 80mm x 80mm|
|Average Rating (2 Reviews): |
Tuesday, 21 January 2020 | Doug
I have been using the RedCat (from FLO) for a month now when the weather has permitted, and leave it permanently attached to my unmodified EOS 6D - it then lives in a camera bag. I have been blown away with the image quality across the frame, and the icing on the cake is that the size and weight are such that it operates a treat on the Sky Watcher Star Adventurer mount. Admittedly, running without guiding results in approx 40-50% light frame rejection rate,but that is more than compensated by the time lost in setting up and aligning a less portable set up. The tube oozes quality and I really like the ability to attach a screw-on 55mm photographic filter to protect the objective - purists may pour scorn, but I don't think its presence will seriously detract from the images I take. The focusing scale around infinity is extremely precise and enables focus to be obtained to the point where only tweaks are required. Expensive, yes, but well worth every penny in my book. Nice Christmas present too.
Wednesday, 16 October 2019 | Terry
The WO RedCat51 arrived quickly from FLO, as usual, and was well packaged. The scope itself looks fantastic and looks and feels a quality item. Iíve had one chance to use it on my EQ6-Pro (overkill, I know), and I love the scope already. The focussed is smooth and holds focus really well, and the Bahtinov mask built into the dew shield is inspired. It was a full moon so there were awful gradients in my M31 image, but the stars looked good all the way out to the edge of the frame of my Canon 100D. Plate solving is a breeze with the roughly 5x3 degree field, and guiding is a doddle (my guide scope has about the same FL as the RedCat51!. Iím looking forward to some darker nights (and the arrival of an Optolong L-enHance filter) to see what itís really capable of.
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