Sky-Watcher 150mm f/12 Maksutov-Cassegrain Telescope (OTA Only)

BH #SK150MMMCOTA • MFR #S11530
Sky-Watcher 150mm f/12 Maksutov-Cassegrain Telescope (OTA Only)
Key Features
  • 150mm Aperture Maksutov-Cassegrain OTA
  • 1800mm Focal Length, f/12 Focal Ratio
  • Limited-Diffraction Optical System
  • Fully Multi-Coated Optics
Balancing aperture with manageability and representing one of the widest apertures in the series, the Sky-Watcher 150mm f/12 Maksutov-Cassegrain Telescope is powerful while maintaining the portability of the smaller models. The Maksutov design exchanges the conventional front corrector plate of a Schmidt with a convex meniscus lens, resulting in a smaller secondary mirror that limits obstruction and increases contrast, while eliminating the need for periodic collimation. This modified optical path results in a slower focal ratio and narrower field of view versus a similar Schmidt, but the optical benefits, when coupled with the larger aperture and fully multi-coated optics, make this an ideal scope for making detailed solar, lunar, and planetary observations, while being able to resolve deep-sky objects like stars, clusters, galaxies, and nebulae.
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Sky-Watcher S11530 Overview

  • 1Description
  • 2Optical Performance
  • 3Mounting
  • 4Included Accessories

Balancing aperture with manageability and representing one of the widest apertures in the series, the Sky-Watcher 150mm f/12 Maksutov-Cassegrain Telescope is powerful while maintaining the portability of the smaller models. The Maksutov design exchanges the conventional front corrector plate of a Schmidt with a convex meniscus lens, resulting in a smaller secondary mirror that limits obstruction and increases contrast, while eliminating the need for periodic collimation. This modified optical path results in a slower focal ratio and narrower field of view versus a similar Schmidt, but the optical benefits, when coupled with the larger aperture and fully multi-coated optics, make this an ideal scope for making detailed solar, lunar, and planetary observations, while being able to resolve deep-sky objects like stars, clusters, galaxies, and nebulae.

The scope is outfitted with a large 2" visual back and, to get users started, Sky-Watcher includes a 28mm long eye relief eyepiece that produces a moderate 64x magnification and a 90° star diagonal for viewing with the optical tube assembly (OTA) pointed at or near the celestial zenith. The OTA is offered here without a mount or tripod for users who have a reliable support system or want to use it as part of a dual-OTA setup for star parties or observation/imaging rigs. It is outfitted with a Vixen-style dovetail plate for use with compatible mounts. This OTA's compact form factor belies its observation power and resolution and is ideally suited as a grab-and-go option for quick observation sessions or heading out to remote locations.

Optical Performance
  • 150mm aperture
  • f/12 focal ratio
  • 1800mm focal length
  • Front convex meniscus lens corrects spherical and chromatic aberrations and comas (off-axis aberrations) across the entire field of view
  • Smaller secondary mirror versus Schmidt-Cassegrains reduces obstructions and increases contrast
  • Fully multi-coated optics maximize light transmission to improve brightness, color rendition, sharpness, and contrast
  • Resolution: 0.77 arcsec; Dawes'
  • Internal primary mirror focus
  • 2"-diameter visual back accepts larger eyepieces and accessories
Mounting
  • Requires mount and tripod for proper use
  • Vixen-style dovetail plate
  • Weight 14 pounds, including OTA and accessories
Included Accessories
  • Eyepiece:
  • 2" barrel diameter
  • Accepts most 2" astronomical filters
  • 28mm eyepiece yields 64x power
  • Comfortable long eye relief
  • Diagonal:
  • 2" snout and eyepiece holder
  • 90° angle places head in a comfortable viewing position
  • Star configuration corrects image horizontally for terrestrial use
  • Finderscope:
  • Relatively low 8x magnification provides a wide field of view for easier alignment and faster star-hopping navigation
  • Larger 50mm aperture helps resolve dimmer objects that dot finders cannot
UPC: 050234115308

Sky-Watcher S11530 Specs

Optical Design
Maksutov-Cassegrain
Aperture
150mm
Focal Length
1800mm
Focal Ratio
f/12
Eyepiece Barrel Diameter
2"
Diagonal
90° star
2" snout and eyepiece holder
Finderscope
8x50 straight view
Tripod
None
Mount Type
Vixen-style dovetail plate
Power Source
N/A
Optical Tube Dimensions
Not specified by manufacturer
Weight
14.0 lb / 6.4 kg
Packaging Info
Package Weight
16 lb
Box Dimensions (LxWxH)
24.7 x 10.7 x 9.9"

Sky-Watcher S11530 Reviews

See any errors on this page? Let us know

Can you attach a full frame dslr to the telescope ...

Can you attach a full frame dslr to the telescope with adapters?
Asked by: Ramakrishna
So you would need 2 Adapters to attach a DSLR. However I would need to know exactly which Camera Body you have in order to recommend the proper Adapters.
Answered by: Alex S
Date published: 2020-12-24

question

What is the actual length of the OTA ITSELF (and not the shipping box size)? I'm trying to figure out if this will fit in my current telescope case.
Asked by: Anonymous
The length of the optical tube is 15.75 inches. ( This includes the threaded connection, for the 2 inch diameter back to attach the diagonal. )
Answered by: robert
Date published: 2022-10-07

I have a Canon T3i, What adaptors do I need for ...

I have a Canon T3i, What adaptors do I need for Skywatcher 150mm Mak-Cas?
Asked by: John
You will need (2) items. The Celestron SLR (35mm OR Digital) Camera Adapter for All Refractor and Reflector Telescopes which Accept 1.25" Eyepieces - Requires Camera-Specific T-Mount Adapter BH #CETA1.25 • MFR #93625 https://www.bhphotovideo.com/c/product/202135-REG/Celestron_93625_SLR_35mm_OR_Digital.html To attach to the scope and the Celestron T-Mount SLR Camera Adapter for Canon EOS BH #CETRCAF • MFR #93419 https://www.bhphotovideo.com/c/product/261256-REG/Celestron_93419_T_Mount_SLR_Camera_Adapter.html To attach to the camera body. Those (2) pieces will now screw together
Answered by: John
Date published: 2021-08-20
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