Celestron RACI Illuminated 9x50 Finderscope

Celestron RACI Illuminated 9x50 Finderscope

Celestron RACI Illuminated 9x50 Finderscope

B&H # CEIRFS MFR # 93781
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Celestron RACI Illuminated 9x50 Finderscope

Celestron RACI Illuminated 9x50 Finderscope

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Product Highlights

  • Right-Angle Eyepiece Configuration
  • Illuminated Dual Crosshair Reticle
  • Separate Reticle Focus Control
  • Rotating Eyepiece Assembly
  • Upright Corrected Image
  • Integrated Dovetail Mounting Bracket
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Celestron 93781 overview

  • 1Description

The RACI Illuminated 9x50 Finderscope from Celestron is specially designed telescope accessory for comfortable and intuitive use with Schmidt-Cassegrain optical tubes. This Right Angle Corrected Image (RACI) device makes it easier for an observer to locate a celestial body through the finderscope when the optical tube is pointed toward zenith. The RACI corrects its transmitted image so the field of view always appears upright, which enables more intuitive telescope adjustments.

In addition to the right-angle configuration and corrected image, the RACI finderscope's illuminated dual crosshair reticle helps the observer pinpoint their subject of interest and center it within the telescope's field of view. A rotating eyepiece assembly allows the observer to customize the viewing orientation, and an included dovetail mounting bracket permits easy attachment to the optical tube, making the RACI finderscope a user-friendly accessory for those stargazers operating a Schmidt-Cassegrain telescope.

UPC: 050234937818
In the Box
Celestron RACI Illuminated 9x50 Finderscope
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description

    Celestron 93781 specs

    Length 7.5" (19 cm)
    Battery Four SR-54 or 389 button type batteries
    Weight 24 oz (680 g)
    Packaging Info
    Package Weight 2.1 lb
    Box Dimensions (LxWxH) 8.8 x 7.5 x 6.0"

    Celestron 93781 reviews

    RACI Illuminated 9x50 Finderscope is rated 4.3 out of 5 by 37.
    Rated 4 out of 5 by from Great scope I bought this to replace the standard red dot viewfinder that comes with the Celestron 4SE and I am very happy that I did. It was very easy to install using the dovetail mount, as for ease of use, this finder is a huge improvement over the 'red dot' I might add that the right angle prism makes life a lot easier when aligning the scope (sirus and canopus in the southern hemisphere), and the field of view is perfect (for me). The optics is excellent and the unit is light enough to be mounted on the OTA for use with the standard single fork arm mount. It is worth adding that B&H were fantastic, prices were very competitive and shipping was very fast.
    Date published: 2015-02-15
    Rated 5 out of 5 by from Great Scope- Big Improvement I replaced the standard red dot viewfinder that came equipped on my Celestron 8SE and am happy I did. It was easy to install using the dovetail mount that came equipped with it. Using a vsual finder is a big improvement over the 'red dot' - and the right angle prism made life a lot eaier- particularly when pointing the telescope to the zenith position. The quality of the optics is excellent and the unit was light enough to easily be mounted in place of the 'red dot' on the OTA for use with the standard single fork arm mount on the 8SE.
    Date published: 2013-08-12
    Rated 5 out of 5 by from Well made, No Instructions or Manual This is a well constructed right angle correct image finder scope. The reticle illumination works well, and images are sharp. However, it took some time to figure out the operation of the finder, no manual or instructions are included or could be found on the internet. (Naughty Celestron) The reticle is focused at the eyepiece, and the image is focused at the objective. To focus the image loosen the dew shield and focus using the knurled ring just behind the dew shield. Lock the focus with the dew shield. It would also be helpful to have alignment instructions.
    Date published: 2014-08-14
    Rated 4 out of 5 by from Nice, but complicates Finding things. Nice, well made, easy to install and sight in. (I have a new SCT telescope and am still getting used to it.) This is a clear upgrade from the junky OEM red-dot finder. But I'm finding it hard to use. I can't be sure I am finding my intended target because of the star diagonal. Looking sideways through the 90 degree diagonal I really can't be sure what I've got, i.e. which star is that and is it the one I was trying to get? And I can't just sight along the barrel for a sanity check, the star diagonal obstructs the view. So I'm thinking of reinstalling the junky red dot at least until I get more used to the whole GOTO alignment process. But yeah, it's a nice little instrument!
    Date published: 2017-10-30
    Rated 5 out of 5 by from A great finder at a very reasonable price I should have bought one of these long ago. Centering stars above 20 degrees dec can be very challenging with a straight through finder. The right angle illuminated ocular makes centering stars a breeze. The construction of this finder is well above what I had expected. Adjusting the scope in that bracket is very tight and sturdy. My only complaint is it took some figuring to determine how the lower left set screw was utilized. It is spring -loaded and has a hex head set screw. Instructions on aligning the scope using this screw would be most helpful. Despite this lack of instructions, I was able to get the scope aligned with the main scope and tightened down securely. Even though this is a Celestron scope, the mounting bracket fit easily on my Meade LX200 Classic.
    Date published: 2015-12-06
    Rated 5 out of 5 by from Does great job Just bought this to replace the finder scope that came with the Celestron c-8. It works much better, optics are very good, a nice little telescope in its own right. I would say its invaluable when searching 60 degrees or higher from the horizon due to the diagonal ( right angle) feature. The eyepiece also rotates to fit your comfort. The illuminated reticle is nice, and can be adjusted so as not to be too bright. One note of warning it is large, and a bit heavy. Also if you are used to sighting down the barrel the right angle feature is different
    Date published: 2014-09-19
    Rated 5 out of 5 by from One of the very best purchases I have ever made! This is a great addition to my astronomy hobby. This finderscope is replacing the one that came on my Celestron NexStar6, and it is so much nicer. It was easy to put one the attach and set up - it came with no instructions (and apparently there are none anywhere to be found), but it is very intuitive - I attached it and had it synched to the telescope in just a few minutes. And it works wonderfully well, the optics are brilliant, and makes alignment so much easier. I looked at the Pleides cluster last night and it looked better in this finderscope than it did in my telescope. I am very happy I bought this
    Date published: 2017-09-30
    Rated 4 out of 5 by from It Works I was solicited to write this review. I realize it's an automatic request, but it's worth knowing about this unit, so here goes. If you want to stop having to bend yourself into unnatural and painful positions while aligning, it's a great unit. It does something I find strange, however. If you calibrate it to your eyepiece or video camera, when slewing to another object it will somehow de-calibrate itself, sometimes by a lot. I have no explanation for it, because everything with it is nice and snug. It's very strange. Since I use Celestron's PWI scope control software, which is so accurate it's amazing, where it winds up in the finder doesn't really matter. I hope this is helpful.
    Date published: 2018-09-20
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