7,500+ items available from stock
Best price guarantee
Your partner for astronomy
Telescopes > Vixen > Vixen Apochromatic refractor AP 100/380 VSD100 F3.8 OTA
Product no.: 43945

Apochromatic refractor AP 100/380 VSD100 F3.8 OTA

$ 6,000.00 incl. VAT, plus shipping costs
too expensive?
long-term
Product not available anymore + lead time

Product description

Ultra Short-Focus Refractor for Astrophotographers featuring a 5 Elements in 5 Group Lens Design

The Vixen VSD100 features a surprisingly fast f-ratio of F/3.8 which is the fastest in this class of quality refractors. The wide and flat imaging field that covers 645 medium format cameras and an innovative 5 elements in 5 group lens design completely elliminates a violet tint in chromatic aberration (blue halo).

It employs an SD lens in the front objective group and an ED lens in the rear objective group to achieve a superb color correction. The blue halos around stars, that are perceptible in astrophotography and that are hard to reduce with 4 elements in 4 group lens design, are corrected successfully. In addition, astigmatismus and coma aberrations are corrected to an extremely high level of image quality.

The Strehl intensity on the lens design of the VSD100 is better than that on a 4 elements in 4 group lens design by approximately 10%. It does not decrease abruptly on stars away from the center of a photographic field. It is ideally suited to detect faint stars. The image circle is as large as 70mm in diameter (60% illuminated). The star images are as small as 15 microns around the corners, resulting in excellent field flatness.

The VSD 100 has the most up-to-date coatings of extremely high reflectivity. These have been developed to match the characteristics of each lens element in order to avoid the deterioration of image contrast due to the increase of lens elements. It boasts of 99.9% light transmission at the maximum per lens surface and achieves superb images with extremely high contrast with no ghost and no flare images.

Precision Over-sized Focuser and Large Rubber Focus Ring: The VSD 100 has an oversized focuser that can be attached to the 645 medium format cameras without difficulty. Highly accurate focusing is possible with the non-rotational helical fine focuser, where the distance of drawing in and out the focuser can be read as small as 20 microns with the provided vernier scale. All the graduations are engraved.

The grooved large rubber focusing ring can be grasped easily even when wearing gloves. The thick rubber ring on the top of the dew shield absorbs shock and protects the optics. The stopper piece inside the helical fine focuser has a slot for smooth focusing movements without slack. This works with the large rubber focus ring allowing the focuser to turn smoothly with a large camera attached.

The length of the dew shield, the positions ot the inner baffles and their proportions to the diameter of the optical tube have been designed to eliminate ghost in the lens design process and to successfully prevent stray light and flare images.

It not only matters which telescope you buy but also where you buy it. Our additional services:

  • We are a leading telescope dealer and know the devices we sell. Our customer service team will gladly help you after your purchase if you have problems with assembly or operation.
  • We provide a copy of the 80-page Telescope ABC beginners handbook with every telescope.
  • We also provide an edition of the exciting astronomy magazine, “Sterne und Weltraum” with each telescope.

Specifications

Optics


Type of build
Apochromat
Aperture (mm)
100
Focal length (mm)
380
Aperture ratio (f/)
3,8
Resolving capacity
1,15
Limit value (mag)
11,8
Light gathering capacity
200
Max. useful magnification
200
Stray light baffles in the OTA
yes
Tube construction
Full tube
lens design
Triplet

Mount


Mounting type
no mount
Type of build
OTA

Included accessories


Dew Shield
yes
Transport cases
yes
finder base
without
Tube clamps
no

Area of application


Astrophotography
yes

Recommended for


Beginners
no
Advanced
yes
Observatories
no

Recommended accessories

Telescope accessories > Transport & storage (5)
Carry case

Omegon carry case for 5" tubes/lenses

$ 99.00*
Telescope accessories > Other (4)
Guidescope

Omegon Guidescope module finder

$ 99.00*
Eyepieces (1)
Reticle eyepieces

Omegon Reticle eyepieces Illuminated crosshair eyepiece, 12.5mm

$ 89.00*
Filters > Nebulae filters (5)
Filters

Omegon Filters 1.25'' deep sky filter

$ 89.00*
Filters > Other (2)
Filters

Omegon Filters Moon filter 1.25"

$ 19.90*
Astrophotography > Camera adaptor (3)
Camera adaptor

Vixen Camera adaptor Wide Photo Adapter 60DX compatible with Canon EOS

$ 162.00*
Astrophotography > Other (3)

Vixen Focal Reducer 0.79x VSD

$ 840.00*
Observatories (1)

Omegon Tent observatory

$ 189.00*
Media (2)
Star chart

Omegon Star chart Planisphere

$ 14.90*
Outdoor (2)
Headlamp

Omegon LED headlamp

$ 13.90*
Astronomy (1)
Camera

Lacerta Camera Standalone Autoguider MGEN Version 3

$ 1,010.00*
Globes & Maps (1)
Continental map

Oculum Verlag Sky Quality Map Europe

$ 18.90*
Solar Observation (2)

Baader Sun filter foil 20 x 29 cm

$ 31.90*
Maintenance & Cleaning > Lens cleaners (3)

Omegon 7-in-1 lens cleaning set

$ 19.90*
Maintenance & Cleaning > Other (2)

Omegon microfibre cleaning cloth 20cm x 20cm

$ 4.90*

*All prices include VAT plus shipping costs.

Vixen Apochromatic refractor AP 100/380 VSD100 F3.8 OTA
Precision focusing with a large rubber grip.
Vixen Apochromatic refractor AP 100/380 VSD100 F3.8 OTA
The diagram illustrates the optical performance of the VSD100 f/3.8 compared to a 4 group lens system.
Vixen Apochromatic refractor AP 100/380 VSD100 F3.8 OTA
Example image 1

Vixen Apochromatic refractor AP 100/380 VSD100 F3.8 OTA

Example image 2

Customer reviews

There are no customer reviews for this product yet.

Compose your own review

Do you have specific questions about your order or products? Please contact our customer service!