About this product
Part Number: 10199
Features an Ohara ED doublet objective that includes an S-FPL53 ED glass element.
242 mm focal length results in a fast f/4.8 focal-ratio.
Precise non-rotating helical focuser for fine focus adjustment.
Has both a T2 thread and 1.25” socket so connecting your autoguider, camera or eyepiece is easy.
Alignment rings are provided, each with 3 nylon-tipped screws.
The bracket's mounting foot is a regular Sky-Watcher / Celestron / Vixen-style mini dovetail so fits into most finderscope shoes.
Tube diameter: 56 mm
Widest diameter (excluding rings): 60mm
NOTE: Not suitable for use with a Star Diagonal (eyepieces won't achieve focus).
- Highest practical power: x100 (Eyepieces not supplied)
- 50mm Objective
- 242 mm (f/4.8) Focal Length
- 1.25" Fine Helical Focuser
- T2 thread / 1.25” Focuser Barrel for Camera / Eyepiece Connection
- Doublet ED lens with 2 Ohara glass lenses (1 lens S-FPL53)
- Guider Rings & Bracket
- Sky-Watcher / Celestron / Vixen Style Dovetail Foot for Standard Finder Shoes
Field of View Simulator
|Average Rating (3 Reviews): |
Thursday, 10 May 2018 | Wayne
The day I received this amazing bit of kit, I was out that evening testing this with a Loadstar x2 camera and WOW!!! pinpoint stars across the whole FOV. I have used many finders over the years and this one is quality and very easy to use, plus no guide camera cable getting twisted when focusing ☺☺☺
You won't be disappointed
Friday, 4 May 2018 | Robert
This finder has the looks, but the build quality and performance are where this finder shines.
Taking it out of the box it feels like a miniature telescope instead of a finder. It is beautifully made and the focuser is smooth. Connecting a guide camera is simple and feels secure. I have used it on 20 minute exposures with no issues.
There are cheaper options out there but nothing comes close to the quality of this finder. I just wish they had included a diagonal.
Monday, 19 February 2018 | David
This is just what I have been looking for - longer FL than a converted finderscope but shorter than an ST80. Better focuser than both the aforementioned and much nicer glass ! The qulaity doesnt disappoint - very nicely made, very smooth and well engineered focuser and well made rings and dovetail. As a trial I focused on a rock about a mile away and defocused in and out and the rock stayed bang in the middle of the fov. The focuser has a T2 male thread on the aft end so I fitted a T2 to C mount adapter to screw my camera on to to create a slop free system. It works superbly. Negative points = none at all.
Please fill in the form below to ask a question.
Q1. Will it achieve focus with a 1.25" prism diagonal (for example, the cheap Celestron one)?
No. Unfortunately not.
The Sky-Watcher EvoGuide 50ED will not work with a star-diagonal so is not suitable for use as a compact rich-field telescope.