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Vixen VSD 100 f/3.8
Vixen VSD 100 f/3.8
Vixen VSD 100 f/3.8
Vixen VSD 100 f/3.8

Vixen VSD 100 f/3.8

Brand: Vixen Optics
Item Number: 26145

Regular price $8,400.00 $5,999.00 On Sale

  • Estimated Arrival: Between Jul 16 and Jul 31. * ETA for USA only

    Shipping & Returns: Free Shipping with $100 purchase. Easy Returns. Simply ensure that the item is returned in its original product packaging within 30 days of purchase.

    The Vixen VSD 100mm f3.8 Astrograph features an innovative wide and flat imaging field, that covers 645 medium format cameras. The 5 elements in 5 group lens design completely eliminates a violet tint in chromatic aberration (blue halo). With an SD lens in the front objective group and an ED lens in the rear objective group, this scope achieves superb color correction. The blue halos around stars, that are visible in astrophotography and are hard to reduce with a 4 elements in 4 group lens design, are corrected successfully. In addition, astigmatism and coma aberrations are corrected to an extremely high level of image quality. The VSD 100 comes with an aluminum storage case. The Strehl intensity on the lens design of the VSD100F3.8 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 lenses of the VSD100F3.8 have 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 a 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. (Patent pending).

    Tony Hallas Says:

    "To have this level of performance from an f/3.8 is remarkable. All in all... a very impressive little telescope! The telescope is essentially sensational. It accomplishes the impossible. Mechanically superb as well, supporting the heavy 16803 camera without any complaint and the enormous helical focuser is tight and accurate. With extremely fast optics, flat field, and superb color correction it is a unique product not just a rehash of the same. "

     

    Examples of Tony's images above. Precision Glass Annealing Process and a Premium Zygo Verifier ATZ Laser Interferometer. In the process of manufacturing optical glass, all the five lens elements are annealed with a precision annealing process (The annealing can straighten molecular arrangements of lens elements and thus unify the characteristic of optical glass.) The homogeneity of refractivity in optical glass is enhanced to the highest degree.

    Vixen Telescope Cutaway Image

    Spot Diagram Center of frame; Edge of full frame 35mm ;Edge of a digital 645 format; Edge of full frame 645 format ;4 elements in 4 group F3.8 optics (designed for reference) 

    Spot Diagram Image

    Spatial frequency: Sagittal; Meridional; 10 lines / mm; 30 lines /mm; Distance from center of frame 

    Spatial Frequency

    Precision Over-sized Focuser and Large Rubber Focus Ring The VSD100F3.8 Telescope 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.

    Focuser Image

    Precision Over-sized Focuser and Large Rubber Focus Ring The VSD100F3.8 Telescope 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.

    Objective Lens Objective lens design SD Apochromatic, fully AS coatings, 5 group-5 element design (SD lens x1, ED lens x1
    Effective Aperture 100mm
    Focal Length 380mm
    Focal Ratio f/3.8
    Light gathering power 204x unaided eye
    Resolving Power 1.16 arc seconds
    Limiting Magnitude 11.8
    Image Circle 70mm, approx. 60% illumination a the edge (covering 645 format)
    Focuser Drawtube diameter 89mm
    Adapter threads dia M84-pitch 1mm, M60-pitch 0.75mm, M42-pitch 0.75mm
    Push fit 60.2mm, 31.7mm
    Filter threads dia 58mm
    Size & Weight Optical tube length 497mm
    Optical tube diameter 115mm(*SX tube ring 115mm is not compatibel)
    Optical tube weight 4.5kg
    Accessories Aluminum case, Allen wrench 1.5mm
    Optional Accessories VSD Tube Ring 115mm, Finder Bracket shoe, Camera Mounting adapter for 645D, VSD focal Extender 1.58x, VSD Focal Reducer 0.79x

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    To request your partial refund simply e-mail us a link to the same product on our website, or on our competitors website within six months from the date of your order and we will process the credit accordingly.

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    Order Confirmation As soon as you place your order you will receive an order confirmation e-mail.  This means that we have received your order in our system and pre-authorized your credit card for the purchase.  As soon as we receive your order we automatically reach out to our suppliers to confirm that it is in stock and available for immediate shipment.  If your item is on backorder or unavailable we will void the pre-authorization and reach out to you via e-mail.  If your item(s) are available for immediate shipment (within 5 business days) we will process the charges and submit the order for shipment.

    Order Shipment If your order is received, the inventory is in stock and your credit card information matches the information, In most cases, we can ship within 5 business days. We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address your provide when checking out.  If you do not receive tracking information from us within six business days of your order please email us at info@skygazeoptics.com.

    Miscellaneous Shipping Information

    • We cannot ship to PO boxes.
    • Non-standard shipping surcharges will apply to isolated service areas, such as remote areas, areas not readily accessible by a delivery vehicle, islands, etc., as defined by the shipper. These circumstances occur less than 1% of the time.

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    Processing time is the time it takes from when you submit your order to when the product leaves the warehouse. The "Ships Within" time frame listed with each of our products on the website applies to this time frame. For example, if your order a product that reads "Ships Within: 2 Weeks", this means that the product typically leaves the factory within two weeks. If there will be any additional time required to process your order, we will notify you immediately to confirm the delivery period. This time is needed for products that are shipped to you directly from our manufacturers. The manufacturers need this time to fulfill your order. In some cases, the items are custom built.  Shipping time is measured when your order leaves the warehouse to when it arrives at your address. Actual shipping time can vary between 2-5 business days. Contact our helpful customer service experts at (888-264-2244)  for more information.

     

    Did your shipment arrive damaged or defective?

    Please report damaged or defective merchandise to us immediately by email phone. Photos of the items and the packaging would be greatly appreciated. This will speed up our resolution process. We strongly recommend at the time of delivery, if your notice any cartons that look dented, crushed or just not right, open them immediately and inspect the contents. If the contents appear to be damaged, please notate it on the delivery ticket, refuse that item only and contact us as soon as possible for instructions.

    Customer Reviews

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    M
    M.C.
    Great service

    Nick was the best. Changed my delivery address mid stream. Great service. The scope is a light hog. Love it. Will order all my stuff from him.