VRC-10
Aperture:  254mm (10")
Focal Length:  2032mm
Focal Ratio:  f/8
Central Obstruction:  110mm (19% of area)
Outside Diameter:  298mm
Overall Length w/out Focuser:  628mm
Tube Weight w/ Focuser:  15.6 kg
Focuser:  3" Crayford style 2-speed
Mounting: two Losmandy style dovetails

MSRP:  Carbon Fiber Tube $2999.99 USD
In Stock

Metal Tube Version
2399.99 USD
SOLD OUT

AS OF JANUARY 8, 2020, due to high cost and price increase, MallinCam will no longer carry the VRC line of Ritchey-Chretien optical tube assembly.


What is the difference between our optical tubes and all others from various vendors? Each and every MallinCam VRC line optical tubes are shipped via Air Freight to our warehouse from the manufacturer to avoid sea salt contamination that can shorten the life of your optical tube reflective coatings. Other vendors  use sea  containers to ship their optical tubes from the manufacturer which exposure optical elements to sea salt for months of traveling by boat.  We also check collimation on every optical tube prior to ship them to clients ensuring top quality. That's the MallinCam difference.

The MallinCam VRC-10 Ritchey-Chretien optical tube comes complete as shown. Including an super large 3" Crayford style linear focuser with 10:1 reduction speed, lock screw, tension adjustment screw, and 1.25" to 2" adapter included.  Three focuser spacers are provided (50mm + 2 x 25mm) to mate between the focuser and optical tube and achieve perfect focus with any ccd cameras or other optical accessories such as diagonals, focal reducers, or Barlows.  The optical tube comes with three integral 12VDC fans with plug-in battery pack (batteries not included) to rapidly cool down the 99% reflective dielectric coated Quartz mirrors.  The VRC-10 comes complete with  collimation screws and lock down screws to  align the primary and secondary mirrors perfectly. A feat not found on many optical tubes of the same type.  The scope comes complete with Carbon Fiber tube for little or no growing/shrinking with changes in ambient temperature, providing a temperature stable optical system that will keep its collimation and focus all night long.

In stock Now! SHIPPING in the continental US and Canada Only.

Click images below to enlarge.
Specifications:

  • Aperture .................................................254mm (10”)
  • Focal Length ................................................ 2000mm
  • Focal Ratio ............................................................. f/8
  • Optical Type ............................. true Ritchey-Chrétien dual hyperbolic mirror reflector
  • Mirrors ........................ low thermal expansion quartz, 99% reflectivity dielectric multicoatings
  • Secondary Mirror Holder Obstruction ......... 110mm (43% by diameter, 18.75% by area)
  • Optical Tube ........................ Carbon Fiber and machined composite front and rear cells
  • Field Stops ................ nine internal knife-edge baffles
  • Focuser ......................... “linear bearing” 3” Crayford with dual-speed 10:1 reduction ratio fine focus;
  •                                         2” and 1.25” compression ring accessory holders;
  •                                         360° rotating camera angle adjuster
  • Focuser Travel ....... 2” (50.4mm) with 1/16th inch and millimeter scales on drawtube for repeatable focus
  • Back Focus .................. 9.25” (235mm) from rear cell, 5.5” (140mm) with focuser installed
  • Extension Rings (to adjust back focus) ...... three total, two measuring 1” in length and one 2” in length
  • Tube Diameter........................... 11.75” (298mm) o. d.
  • Tube Length (without focuser) ............. 24.75” (628mm)
  • Tube Length (with focuser) ................. 28.25” (717mm)
  • Maximum Tube Length (with all three extension rings and focuser drawtube fully extended) ............ 34.25” (870mm)
  • Tube Weight (without focuser) ........ 32.15 lbs. (14.6 kg)
  • Tube Weight (with focuser) .............. 34.4 lbs. (15.6 kg), add 6.4 oz. for each 1” extension and 14.4 oz. for 2”
  • Dovetail for Connection to Mount................ 21” long Losmandy-style “D-plate” dovetail
  • Dovetail for Mounting Accessories ............. 21” long Losmandy-style “D-plate” dovetail
  • Finder .......: Not Included
  • Collimation Instructions Click Here