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Description
Levenhuk Ra 150C Cassegrain OTA (153/1836mm)Description Levenhuk Ra 150C Cassegrain OTA is a Cassegrain reflector that is perfect for observing deep sky. It features a distinguished design. The primary mirror is paraboloid and the secondary mirror is hyperboloid. Due to this, the transmitted picture has no spherical distortion across the entire field of view up to the maximum magnification. This Optical Tube Assembly (OTA) will be appealing to demanding and experienced users. The optics are
Description
Levenhuk Ra 150C Cassegrain OTA is a Cassegrain reflector that is perfect for observing deep sky. It features a distinguished design. The primary mirror is paraboloid and the secondary mirror is hyperboloid. Due to this, the transmitted picture has no spherical distortion across the entire field of view up to the maximum magnification. This Optical Tube Assembly (OTA) will be appealing to demanding and experienced users.
The optics are made of quartz glass with a silicon dioxide coating. The optical system has a reflectivity index of 92~96%. The dual-speed Crayford focuser has no backlash, so that it enables precise focus adjustments. The optical tube is made of steel, inside there is a high-quality blackening, and on the outside, there are two mounts: for the holder and for mount installation (dovetail plate). Levenhuk Ra 150C Cassegrain OTA is compatible with almost all of the modern mounts.
Please note: Mount, tripod, finder, and eyepieces are not included.
Features
- Reflector with a paraboloid and hyperboloid mirrors
- Silicon dioxide coating with a reflectivity index of 92~96%
- Full absence of spherical aberration
- Good correction of astigmatism and field curvature
- Dual-speed Crayford focuser, precise and fast adjustment of sharpness
- 8 internal knife-edge baffles
- Drawtube travel: 41mm (laser-engraved millimetre scale)
- Back focus distance: 157.2mm (from end of 2” focuser collar)
The kit includes:
- Telescope optical tube
- Finder scope base
- Dovetail plate
- 2” Extension ring
- 1” Extension ring
- Dust cover
- User manual and lifetime warranty
Specifications
Optics |
|
| Type | Reflector |
| Type of build | Cassegrain |
| Aperture (mm) | 153 |
| Focal length (mm) | 1836 |
| Aperture ratio (f/) | 12 |
| Resolving capacity | 0,90 |
| Limit value (mag) | 12,7 |
| Light gathering capacity | 480 |
| Max. useful magnification | 306 |
| Tube weight (kg) | 5 |
| tube diameter (mm) | 191 |
| Tube length (mm) | 540 |
| Tube material | Steel |
| Stray light baffles in the OTA | yes |
| Tube construction | Full tube |
Reflector |
|
| Main mirror´s construction | parabolic |
| secondary mirror design | hyperbolic |
| Secondary mirror diameter (mm) | 50 |
| Secondary mirror obstruction | 33 |
| reflectivity | 96 |
| Secondary mirror material | Quartz |
| Primary mirror - Material | Quartz |
| Adjustable | yes |
| protective layer | Quartz |
Focuser |
|
| Type of build | Crayford |
| Connection ( to eyepiece) | 2 |
| Backfocus (mm) | 157,2 |
| Gear reduction | 1:10 Fine movement |
| Adjustment range (mm) | 41 |
Mount |
|
| Type of build | OTA |
| Mounting type | no mount |
Included accessories |
|
| Finder scope | no |
| Prism rail | Vixen-Style |
| finder shoe | Vixen/Skywatcher Level |
| Eyepiece adaptor | 1,25" - 2" |
| Extension tubes | yes |
General |
|
| Series | Ra |
Area of application |
|
| Astrophotography | yes (Moon & Planets) |
| Moon & Planets | yes |
| Nature Observation | no |
| Nebulae & galaxies | yes |
| Sun | Only with Sun filter |
Recommended for |
|
| Beginners | no |
| Advanced | yes |
| Observatories | no |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Works VERY well, NOT sticky, smells AMAZING!
Size: 16 Ounce (Pack of 1), Style: Cool Down Lotion
So... I had sunburn... very painful across my whole back, top of my forehead & the back of my arms. Stupid, I know... USE SUNBLOCK PEOPLE! However, if u don't because u want "a little color" and end up like me, then I highly recommend this after-sun product. It smells amazing and doesn't leave the sticky residue like green Aloe Vera. After rubbing it in, my hands feel super soft. It gives my skin the hydration it needs so I won't peel (and lose the tan I was desperate for). My personal hack... After the sensitivity of the burn calms, I like keeping a bottle in the fridge for that extra cooling sensation. I love this stuff! Sun Bum is a great product... u should definitely try the sunblock tho, it worked where I applied it! I didn't take a pic for obvious reasons, but when u rub it in, it will dry clear.
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Reviewed in the United States on July 14, 2025
★★★★★ 5
Cruise
Size: 8 Ounce (Pack of 1), Style: Cool Down Lotion
Smells great just as described
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Works Exceptionally well without feeling like you just applied Super Glue to your Body.
Size: 8 Ounce (Pack of 1), Style: Cool Down Lotion
I would provide a picture of the bottle but TSA took mine. This is some of the best post sunburn lotion I have ever used. I just finished writing a review of a sunblock lotion that did a great job, what I did not mention was the only sunburn I got was on my lower back where I didn't apply that lotion. It was a pretty uncomfortable burn, especially when I tried to sleep in the forward berth of a sailboat, or when I tried to wear swimming trunks with an elastic type waist, thankfully I had a couple of sets of board shorts that alleviated that irritation. But back on point. What I like the most about this lotion is how it applies. Usually, in the past, I did not like using aloe lotions because I felt like it was like glue when it dried on my skin and I felt like it made my skin feel tight. This stuff applies extremely well and I'm not exaggerating one bit when I say the relief is IMMEDIATE. As soon as I applied it to my sunburn, I felt immediate relief! It also doesn't feel like you just spread a bunch of super glue on your burn when it dries. It absorbs into your skin, cools your "hot spot" and doesn't leave a residue to get onto your clothing, or onto the mattress in my berth on the sailboat. Win and win. I can't recommend this product enough. The only negative experience was when TSA snagged my bottle going through security in Miami because I forgot to put it in my checked bag. But that was just the good ol' TSA doing their job in the amazing way they always do. (sarcasm dripping sounds) It works so well that I bought a replacement. So I would recommend purchasing the 3 oz tube if you plan on traveling with it. This is an excellent product, I'm not sure how long it lasts, because I forgot my sunburn was nothing me, or it enabled me to fall back asleep after applying. It does have that coconutty smell, but it's not like I just spent 3 hours in a hot tub filled with coconut oil. Hmmm... Idea forming... Anyway, purchase with confidence, this Texan who got a sunburn on his lower back and treated it with Sun Bum approves this message.
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Reviewed in the United States on July 27, 2021
★★★★★ 5
Perfect Little Sun Care Kit — Great for Travel!
Style: Original, Style: Original
I love this Sun Bum Road Tripper set! The travel‑sized products are perfect for tossing into my beach bag or carry‑on, and everything smells amazing. It has all the essentials you need for a day in the sun without taking up a ton of space. The quality is exactly what you expect from Sun Bum — gentle, effective, and reliable.
This is such a convenient little kit for trips, beach days, or keeping in the car. Definitely a must‑have for anyone who loves being outdoors.
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Reviewed in the United States on April 27, 2026
★★★★★ 5
Convienent and necessary
Style: Original
Perfect addition to my backpack for a Disney trip! Loved the bag!
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Reviewed in the United States on May 21, 2026