Vixen Optics VSD100 100mm f/3.8 Astrograph Refractor

Vixen Optics VSD100 100mm f/3.8 Astrograph Refractor

Vixen Optics VSD100 100mm f/3.8 Astrograph Refractor

B&H # VIUFAVSD100 MFR # 26145
Vixen Optics VSD100 100mm f/3.8 Astrograph Refractor

Show MoreLess


Now Viewing:

In Stock: Shipping Only
Order in the next 0:00:00 to Ship Today

Product Highlights

  • 100mm Aperture
  • 380mm Focal Length, f/3.8 Focal Ratio
  • 5-Group/5-Element Apochromatic Lenses
  • Anti-Reflection Fully Multicoated Optics
  • 112m Objective Filter Threads
  • Covers 645 Medium Format Camera Sensors
  • Includes Three Camera Adapter Rings
  • Precision Engraved Vernier Scale
  • Focal Point Placement to 20 Microns
  • Hard Aluminum Carrying Case
Show moreShow less
Man Behind Layer

B&H $1000 Giveaway

Share your most-wanted item with friends & family for chances to win a $1000 B&H Gift Card. It's that easy!

1 new winner announced every week!
Limit 1 entry per day; Come back every day to increase your chance of winning!

Be sure to mention #BHWishList when you share!

Share on Twitter Share on Facebook

Congrats to our winners so far — Mark P., Lauren K. & Daniel M.

Official Rules


NO PURCHASE IS NECESSARY TO ENTER OR WIN. The B&H $1,000.00 Giveaway (the "Giveaway" or "Sweepstakes") is void where prohibited by law and is sponsored by B&H Foto & Electronics Corp., 440 Ninth Avenue, New York, NY 10001 ("Sponsor"). It is not sponsored or endorsed by Facebook or Twitter in any way.

Entry Period/Methods of Entry. The Sweepstakes will run from on or about November 7, 2016 until on or about December 19, 2016 (the "Entry Period"). Entries received outside the Entry Period are void. Enter the Sweepstakes via either one of the following methods. (1) Share your most wanted item on Facebook or Twitter via the dedicated links found on the B&H Website (; or (2) Mail a postcard (postmarked during the Entry Period) containing your name, address, phone number, and email address, and indicate the subject(s), if any, about which you are interested in receiving future emails from B&H (e.g. photo, video, audio, computers, home theater, portable entertainment ) (optional) to: B&H $1,000.00 Giveaway, c/o B&H Foto & Electronics Corp., 440 Ninth Avenue, New York, NY 10001 (either option, an "Entry"). Entries must not, in the sole and absolute discretion of the Sponsor, contain obscene, provocative, defamatory, sexually explicit, or otherwise objectionable or inappropriate content. Entries deemed by Sponsor to be inappropriate will be disqualified. Entries owned by a third party, or the use of any trademarks, service marks, logos, brands, or products owned by a third-party are not acceptable for entry into the Sweepstakes. Limit 1 entry per person, per day.

Winner Selection/Prizes/Odds. The B&H Social Team will randomly select a winner from among all eligible entries every Monday during the Entry Period, for a total three (3) winners (each a "Winner"). Each Winner will receive a B&H Gift Card pre-valued in the amount of $1000.00. No cash or other substitutions will be offered. Winner selection is in the sole and absolute discretion of the B&H Social Team. Any taxes are the sole responsibility of the winner. Winners will be notified and receive their prize to the e-mail address associated with the account to which their Entry was posted or the email account provided with a mail-in entry. The odds of winning depend on the number of eligible entries received.

Identity of Winners/Eligible Participants. Winners will be identified by the e-mail account associated with the Facebook or Twitter account from which their Entry was submitted or the email account provided with a mail-in entry. An e-mail account holder shall mean the natural person assigned to such e-mail account by the internet access or online service provider or other organization responsible for assigning e-mail addresses for the domain associated with such e-mail account. Any issues regarding the identity of a Winner shall be resolved by Sponsor in its sole discretion. The Sweepstakes is only open to residents of the United States that are at least eighteen (18) years of age on their entry date and is not open to employees of Sponsor, their immediate family, any person domiciled with such employees, or any affiliates or subsidiaries of Sponsor.

Entry Ownership/Entrant Agreements. Entrants retain full ownership and copyrights to their Submission. However, by entering the Sweepstakes entrants grant Sponsor permission to use their Entries for promotional purposes on their respective social media channels with proper credit. Entrants also agree: (a) to be bound by these Official B&H $1,000.00 Giveaway Rules; (b) that any claims related to this Sweepstakes shall be resolved individually without resort to any form of class action and that awards, shall be limited to actual out-of-pocket costs incurred in entering the Sweepstakes, and shall not include incidental or consequential damages or attorneys fees; and (c) that any actual or perceived ambiguities in these rules shall be interpreted by Sponsor in their sole discretion.

Limitation of Liability/Sponsor Modification/Cancellation Rights/ Choice of Law/ Venue/ Winners List. Sponsor is not responsible for incomplete entries or for failure to receive entries due to technical failures or human error of any kind. Winners agree that Sponsor will have no responsibility for losses or damage of any kind resulting from the acceptance, possession, or use of the prizes. Except where prohibited, participation in the Sweepstakes constitutes entrant's consent to the publication of his or her name by Sponsor in any media for commercial or promotional purposes without limitation or further compensation subject to Sponsor's respective Privacy Policies. Sponsor may modify or discontinue the Sweepstakes at any time and may disqualify from the Sweepstakes any person it determines, in its sole discretion, to have attempted to or actually tampered with or otherwise abused any aspect of the Sweepstakes. Entrants agree that in the unlikely event a dispute arises in connection with this Sweepstakes, it will be governed by the laws of the State of New York and heard exclusively in a court of applicable jurisdiction in the County and State of New York irrespective of any choice of law provisions to the contrary. To receive names of the winners by U.S. mail, please mail a self-addressed stamped envelope to: B&H Foto & Electronics Corp., Attn: B&H $1,000.00 Giveaway, 440 Ninth Avenue, New York, NY 10001. Any Winners List request must be received by B&H within one (1) year of the date the Sweepstakes is conducted.

Let us know how to reach you if you win!

Privacy 100% guaranteed; email address for contact purposes only


Already have a B&H account? Just log in tomorrow to enter again!

$0.00 Tax Collected Outside NY

You Pay: $5,999.00

Add to Wish List Item in Wish List
  • 1Description

The VSD100 100mm f/3.8 Astrograph Refractor from Vixen Optics is a purpose-built telescope for astrophotography and astro-imaging, with an imaging circle capable of covering up to medium-format 645 sensors. Optically, it's designed with a fully multicoated 5-group/5-element apochromatic lens system that corrects for spherical and chromatic aberrations. This correction creates a wide flat field of view without distortion and removes the blue-tinted "halo" affect for true high-contrast color transmission. Astigmatic and coma aberrations are also corrected. Front M112x1 and rear M58x0.75 threads allow the use of filters that can stay on, even if the user wants to change cameras.

The scope can be used for multiple astrophotography techniques included prime-focus, afocal imaging, or eyepiece projection. A traditional focuser is replaced by a non-rotational helical focus system which moves the drawtube forward or back to place the focal point onto the camera's imaging sensor. The vernier scale on the drawtube is engraved for durability and repeatability and enables precision measurements to as much as 20 microns. Three different size camera adapters are provided to accommodate the most common camera-specific T-rings and accessories.

Optical Performance
  • 100mm aperture
  • f/3.8 focal ratio
  • 380mm focal length
  • Apochromatic 5-group/5-element lens design corrects for spherical and chromatic aberrations
  • Views show a wide and flat field of view without distortion at the edges - spherical aberration
  • Colors are faithfully rendered by eliminating the blue "halo" effect of chromatic aberrations
  • Astigmatism and coma aberrations are also corrected
  • Anti-reflection fully multicoated optics
  • Use for prime focus, Afocal imaging, or eyepiece projection astrophotography
  • Push fit: 60.2mm and 31.7mm
  • M84x1.0, M60x0.75mm, M42x0.75mm camera adapter threads
  • 70mm imaging circle, with approximately 60% illumination at the edge
  • Designed to cover a 645 medium format sensor
  • 58mm filter thread
  • 89mm diameter drawtube
  • Knurled non-rotational helical focus ring
  • Focus ring lock sets drawtube in place
  • Precision vernier scale on the drawtube for exact focal point placement to 20 microns
  • Vernier scale engraved on drawtube for durability
Construction Details
  • Anodized aluminum optical tube
  • 1/4"-20 tripod mount
  • M112x1 objective filter thread
  • Hard aluminum carrying case
In the Box
Vixen Optics VSD100 100mm f/3.8 Astrograph Refractor
  • 3 x Photo Adapter Rings
  • 1.5mm Allen Wrench
  • Hard Aluminum Case
  • Limited Five-Year Warranty
  • Table of Contents
    • 1Description
    Optical Design Refractor
    Aperture 100 mm
    Focal Length 380 mm
    Focal Ratio f/3.8
    Eyepiece Barrel Diameter 1.25"
    Diagonal None
    Finderscope None
    Tripod None
    Mount Type Vixen dovetail plate
    Optical Tube Dimensions 19.6 x 4.5" (49.7 x 11.5 cm)
    Weight 9.9 lb (4.5 kg)
    Packaging Info
    Package Weight 20.55 lb
    Box Dimensions (LxWxH) 24.6 x 11.0 x 10.4"

    Vixen Optics VSD100 100mm f/3.8 Astrograph Refractor Review

    Be the first to review this item
    See any errors on this page? Let us know.