Vixen SD103SII Telescope OTA

New Vixen SD103SII high performance apochromatic refractor with FPL53 SD glass and improved optical properties for demanding observers and astrophotographers

    High performance apochromatic refractor with FPL53 ED glass
    Reduces chromatic aberration to an absolute minimum
    Guarantees extremely high contrast and excellent sharpness
    You will receive a very clear, sharp and neutral image
    Very light and transportable, ideal for mobile use
    Fully coated 103mm SD lenses without spacer plates
    No more unpleasant spikes visible on the stars
    High quality standard “Made in Japan”
    Dimensions: 115 x 810 mm
    Weight: 5.5 kg with accessories

The Vixen SD103SII Telescope OTA is a new 103mm apochromatic refractor with high performance Super ED (=SD) glass. The advantage of this SD refractor is its short length and low weight.

The FPL53 glass built into the telescope reproduces an extremely clear and sharp image thanks to an extremely high level of elimination of residual color errors. The SD glass is designed to bring all the rays - violet, red, blue, yellow and green - together very precisely on the same plane. The special lens material reduces chromatic aberration across all colors.

The new Vixen SD103SII no longer uses spacer plates, which leads to significantly better image quality, especially with bright stars. This means that spikes on the stars that would otherwise have been created by the spacer plates can no longer be seen in photographs. You will also be amazed when you look at the moon or the brighter planets and can observe the lunar craters in razor-sharp detail and with extremely high contrast. Also consider the ringed planet Saturn or the cloud bands on Jupiter. But of course brighter deep sky objects such as the Orion Nebula or the Andromeda Galaxy can also be impressively observed.

In combination with the new optional SD Reducer HD Kit or SD Flattener HD (not included), this refractor telescope enables illumination with a 44 mm image circle for full-frame SLR cameras.

The older ED81SII, ED103S, ED115S refractors were originally designed for the visual observer and the photographer with APS-C cameras. However, the new SD series is also optimized for the use of full-format cameras through the use of new inner panels. The large 60 mm focuser also allows heavy cameras to be attached without tipping. Furthermore, the included folding mirror allows comfortable observation even in unfavorable observation situations and also offers a T2 thread for connecting a DSLR camera. This means you can observe in degrees or at a 90° angle. The carrying handle attached to the tube clamps ensures a secure hold when transporting the telescope.


CHARACTERISTICS
 

    Objective lens: D=103 mm, multi-coated
    2-lens SD apochromat without spacer plates
    There are no more spikes on the stars
    Focal length: 795mm (f7.7)
    Resolution and cutoff size: 1.13 arcseconds; 11.8
    Light gathering capacity: approx. 217x more than the human eye
    Dimensions and Weight: 115mm dia x 810mm; 5.5kg
    Finder scope: 7x50 illuminated
    Adapters and connections: thread 60 mm, 50.8 mm and 31.7 mm receptacle, thread for T-ring
    Connection: 50.8 mm and 31.7 mm receptacle with flip mirror
    Photography: Primary Focus and Eyepiece Projection

SCOPE OF DELIVERY
 

    Refractor SD103SII telescope
    Pipe clamps with dovetail
    Dew cap
    Flip mirror folding mirror
    Carrying handle
    Dovetail rail
    7x50 viewfinder

Technical data
Area of ​​application
Area of ​​application	

    Deep sky observation
    Deep sky photography
    Moon observation
    Moon photography
    Planetary observation
    Planetary photography

Target group
Target group	

    Advanced
    Specialists and research
    visual observers

Product family
Refracting telescope product family
OPTICAL FEATURES
Optical design Apochromatic refractor
Maximum recommended magnification 206
ED glass ✓
Material front lens or correction plate Ohara Japan FPL-53 ED glass
Mirror/lens diameter	103mm
Focal length 795mm
Aperture ratio 7.7
Resolution power 1.13 arcseconds
Visual stellar limit magnitude (approx., mag) 11.8
Type of compensation	

    Full multi-shift pay
    Full pay

Color of the coating is green
Finder scope 7 x 50
GENERAL TECHNICAL DATA
Tube material aluminum
Color white
Connection thread type 60 mm
Transportability good
Eyepiece mount plug diameter 50.8 mm
Dust cover for front lens and eyepiece socket
DIMENSIONS & WEIGHTS
Total length 810 mm
Total width 115 mm
Total height 115 mm
Net weight of optical tube (including accessories) 5.5 kg