CFF 250mm Ritchey - Chrétien Supremax33 Version

Starting Price: $8,150.00
Price as Configured: $8,150.00
Brand: CFF Telescopes / SKU: CFF-RC250S
CFF telescopes are custom manufactured on request. Please inquire about delivery times.
Focal Length (Required)
Coatings (Required)
Color (Required)
View Add-ons and Accessories

Recommended Add-ons and Accessories

Enter the quantity desired for each item and click the close button to continue with your purchase.
CFF-D350 - CFF Dovetail, Losmandy Type, 350mm length, lightweight
CFF-D350 - CFF Dovetail, Losmandy Type, 350mm length, lightweight
$150.00
CFF-PC-RC250 - CFF Padded Case for RC250
CFF-PC-RC250 - CFF Padded Case for RC250
$170.00
CFF-DCPHF - CFF Dual controller for primary's heater and fans
CFF-DCPHF - CFF Dual controller for primary's heater and fans
$190.00
CFF-EFP-SM - CFF Electronic focusing package for secondary mirror
CFF-EFP-SM - CFF Electronic focusing package for secondary mirror
$810.00
QTY:  
Price as Configured: $8,150.00
Product Help
Need help deciding?
Tell us what you're looking for, and we’ll point you in the right direction. .
Optical DesignRitchey-Chrétien
Aperture250 mm
Focal Lengthf/7 - 1,750 mm
f/8 - 2,000 mm
Focal Ratiof/7 or f/8
Secondary Mirror Obstruction45%, linear
Secondary Mirror Obstruction by Areaf/7 - 48% linear
f/8 - 45% linear
Secondary SubstrateFused Silica/Quartz
Back Focus~235 mm, from back-plate;
f/7 - 104.7 mm from corrector
f/8 - 98.5 mm from corrector
Tube Weight28.7 lbs. (13 kg)
Tube AssemblyCarbon fiber truss tube
Primary Mirror Cage MaterialCarbon Fiber
Dimensionsf/7 - 750 x 345 x 380 mm
f/8 - 800 x 345 x 380 mm
(L x W x H; considers handle and dovetail added height)
Focuser3.2" Starlight Instruments focuser, rack and pinion, 38mm travel
Warranty2 years