The Vixen SDP65SS is a compact astrograph with a very high imaging performance suitable for photography up to full-frame sensors
- Compact and lightweight astrograph with 65 mm aperture
- Four lens elements in four groups including SD and ED lenses
- Designed for photography up to full-format with 44 mm image circle
- Extremely low vignetting for best results in astrophotography
- Very compact with a length of approx. 413 mm and 359 mm when the dew cap is retracted
- Ideal for field use or travelling by plane
- Dovetail slide rail for Vixen Standard and Arca Swiss systems
- Newly designed focuser with lens focusing and vernier scale
- Dimensions: L: 413 mm (359 mm dew cap retracted) x D: 90 mm
- Weight: 2.6 kg
With BRESSER, you can enjoy a smooth introduction to the vast world of astronomy. Our detailed information ("Telescope Guide") provides valuable tips for beginners—but even experienced astronomers can use the information we provide (e.g., tables for the geographical latitude of all major world cities) as a reference.
Here is the table of contents of the comprehensive BRESSER Telescope Guide:
- 2. The View into the Starry Sky
- 2.1 Observing with the Naked Eye
- 2.1.1 Observing Constellations with the Naked Eye
- 2.2 Observing with Binoculars
- 2.2.1 Observing Planets and Moons with Binoculars
- 2.2.2 Observing Deep Sky Objects with Binoculars
- 2.2.3 Every Beginning is Easy
- 2.3 Observing with a Telescope
- 2.4 The Moon
- 2.4.1 The Moon Phases
- 2.4.2 The Far Side of the Moon
- 2.4.3 The Moon Map
- 2.4.4 Maria (Seas)
- 2.4.5 Mare
- 2.4.6 Craters
- 2.4.7 The Ray Craters
- 2.5 Observing the Solar System with a Telescope
- 2.5.1 Where are the Planets?
- 2.5.2 Planet Observation
- 2.5.3 The Position of the Planets Relative to the Sun
- 2.5.4 The Planets Introduce Themselves
- 2.5.5 Deep Sky Observation with a Telescope
- 2.6 Practical Observation Tips and Tricks
- 2.6.2 Tips for Optimal Observation Conditions
- 2.7 The Most Beautiful Objects Throughout the Year
- 4. Telescopes
- 4.1 The Telescope as an Observation Instrument
- 4.2 Optics
- 4.2.1 Refractor (Lens Telescope)
- 4.2.2 Reflector (Mirror Telescope)
- 4.3 Mechanics
- 4.3.1 Altazimuth Mount
- 4.3.2 Equatorial Mount
- 4.3.3 Drive Motors
- 4.4 Accessories
- 4.4.1 Eyepieces
- 4.4.2 Important Tips for Eyepiece Selection
- 4.4.3 Filters
- 4.4.4 Photographic Accessories
- 4.4.5 Other Accessories
- 5.1 Which Telescope for Whom?
- 5.1.1 Deep-Sky Observations
- 5.1.2 Observing Closer Planets
- 5.1.3 The Topic of Portability
- 5.1.4 Price Factor When Buying a Telescope
- 6. Useful Tables
- 6.1 Table for the Geographic Latitude of All Major World Cities
- 6.1.1 Observers in the Northern Hemisphere (N):
- 6.1.2 Observers in the Southern Hemisphere (S):
- 6.2 Lookup Table for Notable Stars
- 6.3 Getting Acquainted with the Universe - or: Distances in Space
Sky Guides by Bresser
Product information "Vixen Telescope SDP65SS Astrograph"
Purpose-built for astrophotography
The SDP65SS has been purpose-built for astrophotography and features four elements made from SD glass, high-refractive-index ED glass and lanthanum glass. The arrangement of the lenses is optimised for maximum performance, significantly reducing axial chromatic aberration and achieving the same level of astigmatism correction as the VSD telescope series.
Exceptional image field flattening
The optimised arrangement of the four lenses made from SD and ED glass achieves an exceptionally flat image plane without the need for an additional flattening lens. It provides a high degree of correction and produces distortion-free star images across the entire 44 mm illuminated field of view.
To reduce vignetting, the light beam is narrowed at the final lens element.
Thanks to the optical design, vignetting is virtually eliminated, ensuring excellent edge illumination with almost any camera system. Over 90% of the light is captured at the edge of a 35 mm full-frame sensor, reducing the need for extensive image processing afterwards.
Newly designed focuser
Focusing is achieved via a rack-and-pinion system that moves the lens assembly forwards and backwards. As the focuser body itself remains stationary, there is no tilting, even when using heavy accessories or cameras. A built-in vernier scale provides a clear reference for focus position, marked in 0.1 mm increments. For even greater precision, an optional dual-speed focuser or a third-party ZWO EAF (electronic focuser) can be attached.
Compact and lightweight
Measuring approximately 413 mm in length, or 359 mm with the dew cap retracted, the telescope is exceptionally portable—perfect for travel and field use.
With the optional SDP Focal Reducer 0.8x, the SDP65SS can capture images with a wider field of view and shorter exposure times. The focal length is reduced by a factor of 0.8, and the focal ratio decreases from f/5.5 to f/4.4.
FEATURES
- Lens design: 4-group 4-element SD (Super ED) apochromat, multi-coated
- Aperture: 65 mm
- Focal length: 360 mm (F5.5)
- Resolving power: 1.78 arc seconds
- Limiting magnitude: 10.8
- Light-gathering power: 86x
- Illumination: 44 mm to over 90% in the image corners
- Tube length / diameter: 413 mm (359 mm dew cap retracted) / 90 mm
- Eyepiece focuser: Internal focusing, rack-and-pinion with scale
- Adapter thread: 60 mm (P=0.75 mm), 42 mm for T-ring
- Visual back: 31.7 mm connection
- Solar observation: For solar observation, a solar projection screen set B and an eyepiece are required (not included)
- Weight: 2.6 kg
SCOPE OF DELIVERY
- Vixen SDP65SS
- Dovetail slide bar
- 1/4 inch screws (L: 19 mm) x 2 pieces,
- Allen key (3 mm, 2 mm, 1.5 mm, 3/16 inch)
| Angular resolution (arc seconds): | 1.78 |
|---|---|
| Aperture ratio: | 5.5 |
| Batteries included: | false |
| Batteries required: | false |
| Colour: | white |
| Compass: | false |
| Dust protection caps: | Dust protection caps for front lens and eyepiece holder |
| ED glass: | true |
| Field of application [Telescopes]: | Deep Sky Observation, Deep Sky Photography, Lunar observation, Lunar photography, Planetary observation, Planetary photography |
| Focal length (mm): | 360 |
| Length with retracted tube (approx., mm): | 359 |
| Material: | Aluminium |
| Material OTA: | Aluminium |
| Material front lens or corrector plate: | Ohara Japan FPL-53 ED glass |
| Maximum recommended magnification: | 130 |
| Mirror/Lens diam. (mm): | 65 |
| Net weight OTA (incl. accessories) (kg): | 2.6 |
| Optical design: | Apochomatic Refractor |
| Power supply unit included: | false |
| Product Family [Telescopes]: | Refractor telescope |
| Reticle: | false |
| Target Group [Telescopes]: | Advanced Amateurs, Specialists and Research, Visual enthusiasts |
| Total length (mm): | 413 |
| Total width (mm): | 90 |
| Transportability: | very good |
| Tripod height adjustment: | false |
| Tube diameter (mm): | 90 |
| Type of coating: | Multi coated |
| Visual limiting magnitude (approx., mag): | 10.8 |