Vixen VSD90ss Astrograph

Very fast 90 mm high performance astrograph for demanding astrophotographers and observers with 5 lens elements in 5 groups, "Made in Japan"

Very fast 90 mm high performance astrograph for demanding astrophotographers
Elaborate construction with 5 lens elements in 5 groups for absolute correction
Needle-fine stars right up to the edge of the image field, even with a 44x33 mm camera format
Thanks to the large final lenses, there is almost no vignetting
Large, stable focuser, also suitable for heavy cameras
Extremely high sharpness, colour purity and contrast thanks to SD lenses
Very large field illumination up to 60 mm
High Strehl intensity of 96.7% at visible wavelengths
Compatible with optional reducer of the VSD100 for even faster results (F:3.9)
Optional motor focuser with two speeds can be retrofitted

€6,399.00*

Prices include VAT. Shipping costs not included

Available, delivery time: 2-4 days

Product number: X026131

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Product information "Vixen VSD90ss Astrograph"

Fast 90 mm high-performance astrograph for demanding astrophotographers and observers with 5 lens elements in 5 groups. Due to the complex optical structure with five lens groups and five elements (quintuplet), including two SD (Super ED) lenses and an ED lens (Extra-low Dispersion) , a virtually aberration-free optical system was created.
This revolutionary astrograph is compatible with a full-frame digital DSLR or an even larger 44x33 mm camera. The 90 mm astrograph with fast aperture ratio delivers exceptionally sharp, high-contrast and small point stars from the centre to the corners of the field of view. In addition, it is also ideal for visual observation with a very large field of view but also for planetary observation with high magnification.
The VSD90ss is designed so that there is a "long peak range" in the adjustment accuracy of the sharpness, so that photographers can always achieve satisfactory results in astrophotography. Even if the focus is not quite precise, round and sharp stars are still shown throughout the entire image field.

Illumination without vignetting
In most cases, an astrograph also produces optical vignetting (a gradual decrease in light rays towards the edge of the image) This is mainly caused by rear lenses being shaded by the front lenses. Because of this darkening, it is relatively normal for the photographer to have to further edit the image after taking the picture and also have to do some additional so-called flats before taking the picture. To solve this problem, the VSD90ss uses wide aperture lenses in the rear elements, securing over 90 % of the light volume at the edge of the 60 mm image circle. Since the light intensity is uniform throughout the entire image field of the VSD90ss, there is no need for complex technology to prevent edge darkening. The VSD90ss is coated with the most modern coatings of extremely high reflectivity. These coatings have been specifically developed to optimize the properties of each individual lens element without degrading contrast and light intensity across multiple lenses.

Numerous gradations of light bring beautiful point-like stars into the image field
The low optical vignetting ensures sufficient illumination and thus eliminates the asymmetric flare caused by bright, diffraction-limited stars. It prevents stars at the edge of the 60 mm image circle from exhibiting deformations such as comets, astigmatism or coma. Since the illumination of the image field is relatively similar from the center to the edge of the image, you can expect excellent star imaging.

Please note:
*Depending on the recording system used, mechanical vignetting can still occur due to the camera body or incorrect adapters.

96.7％ Strehl for impressive visual observations
The VSD90ss offers a flattened large field of view with a low magnification wide angle eyepiece. Even with a high-quality wide-field eyepiece with a large field of view, you can get sharp images of stars in the entire field of view when visually observing! In the centre of the field of view, a Strehl intensity of an impressive 96.7% is achieved at visible wavelengths. This Strehl ratio exceeds that of the SD81SII apochromat at 95.7%, which is known for its excellent optical properties, and this also works excellently when observing the moon and planets at high magnification.

The versatile large and stable focuser
The VSD90ss has a large focuser with a diameter of 87.5 mm to make optimal use of the large illumination field of 60 mm. With the large extension that is compatible with many accessories, it is perfect for astrophotography up to large format or 35 mm full frame DSLR cameras. Thanks to its precise manufacturing, it is also suitable for very heavy cameras without tipping.

The precision locking lever of the eyepiece extension
The focuser's extension tube has a locking lever that holds the extension tube firmly in position even when using heavy cameras such as large format cameras or CCD cameras with a large sensor. The locking lever clamps the rack gear to the extension barrel so that the viewing angle or focus on your camera does not shift.

Compatible with motor driven focusers
An optional two-speed motor focuser (not included) is available for the VSD90ss to provide sensitive focusing. An EAF (Electronic Automatic Focuser) from ZWO or equivalent can also be retrofitted.

Optional VSD Reducer for even faster results
The tried and tested optional VSD reducer, which was also used on the predecessor, the VSD 100, is also compatible with the VSD90ss. The photographer gets even faster results in astrophotography with an aperture ratio of 1:3.9.

CHARACTERISTICS

90 mm aperture, 495 mm focal length (F5.5)
Needle-fine stars up to the image field edge in 44x33 mm format
5 lens elements in 5 groups
Image illumination up to 60 mm
Resolution power: 1.29
Limit size: 11.5
Light gathering capacity: 165x
Illumination: 60 mm
Dimensions: 115 mm diameter x 600 mm length (476 mm length for storage)
Weight: 4.3 kg
Connections/Thread: Size thread/84 mm (pitch 1 mm), 60 mm (pitch 1.0 mm), 42 mm for T-ring push fit / 60.2 mm, 50.8 mm and 31.7 mm
Solar observation: separately available solar projection approach B
Optional VSD100 reducer compatible (opening ratio F: 3.9)

SCOPE OF DELIVERY

VSD90ss high performance astrograph

Angular resolution (arc seconds):	1.29
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, Solar observation
Focal length (mm):	495
Length with retracted tube (approx., mm):	476
Material:	Aluminium
Material OTA:	Aluminium
Material front lens or corrector plate:	Ohara Japan FPL-53 ED glass
Maximum recommended magnification:	180
Mirror/Lens diam. (mm):	90
Net weight OTA (incl. accessories) (kg):	4.3
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):	600
Total width (mm):	115
Tripod height adjustment:	false
Tube length (mm):	600
Type of tripod thread:	60 mm
Visual limiting magnitude (approx., mag):	11.5

Press_Release_VSD90SS_20231121.pdf

Manual_X026131_VSD90ss_en_v082024.pdf

Accessories

Vixen Wide Photo Adapter 60DX for Nikon

The Wide Photo Adapter 60DX connects your Nikon DSLR camera to your telescope via a 60 mm thread. Thanks to the use of new materials and an improved design, Vixen was able to significantly improve the precision and load capacity compared with conventional adapters. The adapter's large interior diameter prevents shadows at the edges of the image when using a full-frame DSLR camera.FEATURESIncreased material strength for additional stability6 screws hold the camera in position (compared with 4 on most conventional adapters)Screw tips with Delrin inserts prevents the camera from tilting and minimizes distortion.Large interior diameter prevents shadowingBlack interior prevents scattered lightCompatible with 60 mm accessories when the camera adapter is removed2 screw sets (L and S) prevent scratches on the camera housing2 screw sets for adjusting the rotation resistanceDELIVERY CONTENTVixen Wide Photo Adapter 60DX for Nikon cameras2 screw sets (L and S)

€159.00*

Vixen universal T2 focal adapter, 60 mm

This Vixen focal adapter connects your DSLR or other camera to your telescope with a 60 mm thread.The large interior diameter of the adapter prevents vignetting at the edges of full-frame camera sensors.The focal adapter can be rotated so that the image field can be perfectly framed.This rotational adjustment is facilitated via 3 locking screws, ensuring a firm lock.Note: Vixen T2 ring is also required for your brand of camera.In this case, the inner ring of the T2 adapter is removed and clamped in place with three small grub screws.PROPERTIESConnects your DSLR camera to your telescopePrevents shadowingDimensions: 72 mm x 20 mmWeight: 55 gWHAT'S INCLUDEDFocal adapter universal 60 mmAssembly tool

€54.00*

Vixen 60DA Focal adaptor for Canon EOS Cameras

Vixen 60DX Focal adaptor for Canon EOS Cameras This Vixen 60DX is a photographic adaptor for Canon EOS cameras, for use with telescopes with a 60 mm focuser drawtube connection thread. A redesign by Vixen uses new tougher materials for a more solid connection and also offers an accurate, well-machined camera rotator ring, in order to help frame your images perfectly. Camera-Adaptor for Canon EOS with 60mm Focuser connection thread Large inner diameter for full-format cameras, helping to minimise vignetting 6 locking 60° spaced bolts to hold the camera’s rotation in position Dimensions: 81mm x 30 mm / weight: 190g The option of using 6 long or 6 short fixing screws for the rotator The Vixen 60DA Focal adaptor connects your Canon EOS DSLR Camera to a telescope with an appropriate 60 mm Focuser Drawtube Thread. Thanks to the use of new materials and an improved design Vixen was able to considerably uprate both precision and durability, when compared to conventional rotational camera adaptors. Two sets of rotational locking bolts (Long and Short) are supplied. The longer ones are knurled and easy to turn by hand. The shorter options help to prevent marring of the camera casing, when using certain designs of camera and are also much less easy to turn by hand, increasing security if you need the camera locked in a particular rotational position for longer periods. The large inner dimension of this adaptor prevents vignetting at the edges of the image when using full frame DSLR cameras. Canon EOS-Bayonet fastener made of hardwearing brass, for years of hassle-free use. Increased material quality over conventional adapters provides more stability in use. 6 fixing bolts hold the camera in rotational position for increased sturdiness (standard rotators often only use 4, or less). FEATURES Screw tips with Delrin-tips prevent tilting of the camera and subsequent image distortion. Large inner diameter prevents vignetting. Inner blackening suppresses scattered light. Compatible with 60 mm accessories, when the camera adaptor is taken off. Two rotational bolt sets (Long and Short) are supplied. SCOPE OF DELIVERY 60DA Focal adaptor 6 long and 6 short fixing screws

€149.00*

Vixen focal adapter for Canon EOS

The Vixen focal adapter can be used to connect your DSLR camera to your telescope via a 60-mm thread. The large internal diameter of the adapter prevents shadows at the edges of the image when using a full-frame DSLR camera. The focal adapter can also be rotated to rotate the field of view selection. Three locking screws are provided for clamping.Note: Vixen T2 ring also required for your Canon. In this case, the inner ring is removed from the T2 adapter and clamped using three small grub screws.FEATURES60-mm connection thread for OAZWeight: 56 gT-ring for Canon EOS also requiredPACKAGE CONTENTSVixen focal adapter for Canon EOS

€54.00*

Vixen M56 filter adapter for M48mm and M52mm filter thread

This adapter ring enables you to take colour and nebula filters with M48 and M52 thread.The M56 thread of the filter adapter is screwed into the Wide Photo Adapter AD 60DX, for example, and then offers an adaptation to M52 and M48 filter threads for various nebula filters for photography. The adapter has each one 48 mm and 52 mm thread. The adapter ring can be used on the Wide Photo Adapter 60DX, Wide Photo Adapter 60 mm, 60 mm ring with T-thread adapter or the EA60mm up to 50.8mm.The adapter ring can be used on the telescopes A81M, A105M II, SD81S, SD115S, AX103S, FL55SS, VC200L, VMC200L, VMC260Lin combination with the optionally available adapters described above.IMPORTANT NOTE: The Corrector PH, the Extender PH and the Coma Corrector 3 cannot be used with this Adater when used with the R200SS OTA in combination with the EA 60mm to 50.8mm.FEATURESInternal thread M48 (diameter 48 mm, thread pitch = 0.75 mm)Internal thread M52 (diameter 52 mm, thread pitch = 0.75 mm)External thread M56 (diameter 56 mm, thread pitch = 0.75 mm)Applicable adapters: Wide Photo AD 60DX, Wide Photo AD 60 mm, 60 mm ring with T-thread AD, EA60 mm to 50.8 mmDimensions: 56 x 7 mmWeight: 7gMade in JapanSCOPE OF DELIVERYFilter adapter for M48mm and M52mm filter thread

€55.00*

Details

Vixen T-ring for Canon EOS

T-rings are used as a connecting piece between the camera adapter and the camera. Please note that each camera type requires a different T-ring.FEATURESVixen T-ring for Canon EOS camerasConnects a camera adapter to the cameraFor microscopes, telescopes and T2 lensesWeight: 52 gPACKAGE CONTENTSVixen T-ring for Canon EOS

€28.00*

Vixen T2 ring for Nikon

T2 rings are used as a connecting piece between the camera adapter and the camera. Please note that each camera type requires a different T-ring.FEATUREST2 adapter ring for Nikon camerasAdapts the camera to telescopes and microscopesWeight: 22 gPACKAGE CONTENTSVixen T2 ring for Nikon

€18.00* €28.00* (35.71% saved)

Vixen T-Ring for Sony E Cameras

This T2 ring allows you to use your Sony camera on a telescope or microscope with a T2 thread.Depending on the mode, you may require an additional camera adapter.FEATUREST-2 ring for connecting an SLR cameraDesigned for Sony EWeight: 113 gDELIVERY CONTENTT-2 Ring Sony E

€55.00*

Vixen T-Ring - Sony (Konica-Minolta-Sony Alpha)

Connects a Four Thirds camera to your telescope or microscope.A camera adapter is required for this purposeWeight: 58 gDELIVERY CONTENTVixen T-ring - Four Thirds

€19.00* €28.00* (32.14% saved)

Vixen Micro 4/3 T-ring

T-rings are used as a connecting piece between the camera adapter and the camera. Please note that each camera type requires a different T-ring.FEATURESMicro 4/3 T-ringFor telescopes and microscopesWeight: 110 gPACKAGE CONTENTSMicro 4/3 T-ring

€55.00*

Vixen Tube Clamp 115s for VSD90ss

Vixen Tube Clamp 115s for VSD90ss This high-quality tube clamp made in Japan is used to mount the VSD90ss f 5.5 astrograph. The base plate has M6 and M8 holes and can therefore be used on almost all mounts.FEATURES Supplied with various holes as standard High-quality CNC-milled aluminium tube clamp with non-slip locking screw Felt on the inside, prevents scratches on the VSD tube Threaded screw holes bottom: M8 holes x 2 (spacing 35 mm), M6 holes x 2 (spacing 35 mm) x 2 rows, 1/4-inch holes x 3 (inside 30 mm), 1/4-inch holes x 3 (interval 30 mm) Threaded screw holes top: M8 holes x 2 (spacing 35 mm) x 2 sets, M6 holes x 2 (spacing 35 mm) x 2 rows, 1/4-inch hole x 1 in the centre, M4 holes x 2 (spacing 20 mm) Dimensions: 162 × 71 × 155 mmSCOPE OF DELIVERY VSD tube clamp

€249.00*

Vixen VSD90SS transport case

Special transport case for the VSD90SS astrographThis is a hard-shell case that was developed exclusively for the VSD90SS. You can store the VSD90SS tube either without the tube clamp or with the tube clamp attached. When the VSD90SS is stored in the case, there is enough space around the focuser to store accessories for photography.The inside of the case is designed so that the VSD90SS can be used as soon as it is removed from the case. You can store not only the tube of the VSD90SS, but also the tube clamp. There is enough space for accessories on the side of the case facing the eyepiece to make it easier to keep them handy at the observation site. For example, the reducer V0.79x, wide-angle photo adapter 60DX or an electric focuser from ZWO can be stored.The housing of the case is made of lightweight and hard-wearing Plapearl material. The flexible properties of Plapearl allow for a special construction that reduces the weight by more than 30 % compared to an equivalent aluminium case. Thanks to the seamless construction, with the exception of the opening, the housing is also extremely airtight. Plapearl is lightweight, durable, has excellent flexural rigidity and is easy to recover from impact.FEATURESCase material: PlapearlDimensions: 556 x 245 x 256 mmWeight: 2.4 kgSCOPE OF DELIVERYVSD90SS transport caseCustom-fit padding insertsKey 2x

€399.00*

Details

Vixen Dual-Speed-Focuser

The 1: 7 reduction enables very fine focusing of targets.An indispensable accessory, especially in astrophotography.The reduction can be retrofitted on the following telescopes:A80M, A105M, NA140SSf, ED81S, ED103S, ED115S, AX103S, VC200L, VMC200L and R200SSCannot be used on old devices from the 90s with plastic focusing knobs - in these cases, it is also necessary to swap the focus spindle (please contact us for details).PROPERTIESAllows very fine focusingIndispensable in astrophotographyCan be retrofitted to many Vixen telescopesReduced to 7:1Weight: 170 gWHAT'S INCLUDEDDual Speed KnobAssembly tool

€205.00*

Vixen Dual Slide Dovetail Bar

Universal dovetail bar for Vixen and ARCA-SWISS standard clampsThe Vixen Dual Slide Dovetail Bar can be attached to mounts with the Vixen dovetail standard as well as to narrow profiles such as the popular ARCA-SWISS standard. This rail is therefore not only suitable for mounts but can also be used on many items from the photo accessories range. With the optional quick-release fastener (item No.: X035438 - Vixen Dovetail adapter with quick-release fastener) the rail can also be attached to a camera tripod. With the optional quick-release panorama clamp (item No.: X000096 - Vixen Quick Release Panorama Plate) and an additional counterweight rod, you can, for example, attach a telephoto lens to the POLARIE U. A spotting scope can also be attached quickly and securely to an astronomical mount.FEATURES Screw connection holes: 1/4 inch thread 3x, 3/8 inch thread 1x, M6 thread 4x lateral Compatibility: Vixen and ARCA-SWISS standard Material: Aluminum Dimensions: 182 x 42 x 15 mm Weight: 178 gSCOPE OF DELIVERY Vixen Dual Slide Dovetail Bar

€49.00*

Vixen M54 Adapter Ring

M54 Adapter Ring for adapting to 54 mm accessories (for use with the 60 mm to M48 camera adapter)Replace the inner ring of the 60 mm to M48 camera adapter (optional) to attach cameras or accessories with a 54 mm internal thread (M54 × 0.75). Ideal for full-frame CMOS cameras: When shooting with a full-frame sensor or a CMOS camera, the larger diameter helps minimise vignetting.With the optional M56 Filter Conversion Adapter 48/52, you can use standard 48 mm / 52 mm photographic filters. Note:When using the M56 Filter Conversion Adapter 48/52, the PH corrector, PH extender, Coma Corrector 3 and SDP Reducer cannot be used. FEATURES Telescope-side connection (female): M56 × 0.75 (for filter mount/adapter ring) Camera-side connection (male): M54 × 0.75 Compatible with: 60 mm to M48 camera adapter Not usable with: Wide Photo Adapter 60DX and Wide Photo Adapter 60 mm Dimensions: Ø 68 × 12 mm Weight: 23 g SCOPE OF DELIVERY Vixen M54 Adapter Ring

€39.00*

Details

Vixen Camera Adapter 60 mm to M48

The Vixen 60 mm to M48 camera adapter is used to mount an astronomical CMOS camera to Vixen telescopes with a 60 mm focuser. The adapter is suitable for cameras or accessories with an M48 × 0.75 internal thread. You can directly connect third-party CMOS cameras and other products with an M48 thread. (Depending on the CMOS camera, an extension tube (optional) may be required.) The adapter can be freely rotated by loosening the clamping screws to orient the image as desired. Using the optional M56 Filter Conversion Adapter 48/52, you can attach 48 mm / 52 mm third-party photographic filters. Note:When using the M56 Filter Conversion Adapter 48/52, the PH corrector, PH extender, Coma Corrector 3 and SDP Reducer cannot be used. FEATURES Camera adapter: 60 mm to M48 Telescope side connection: 60 mm, P = 0.75 mm Accessory side (internal): M56 × 0.75 (female) Camera side (internal): M48 × 0.75 (female) Adapter: rotatable SCOPE OF DELIVERY 60 mm to M48 camera adapter

€98.00*

Details