DFM Engineering, Inc.
1035 Delaware Ave. Unit D
Longmont, CO 80501
Phone: 303-678-8143
Fax: 303-772-9411

CCT-50 and Larger


• Our typical 1.3M Classical Cassegrain has an F/3 primary mirror with an effective focal ratio between F/8 and F/18. The 100 mm field is fully shielded and unvignetted.

• Both primary and secondary mirrors have near zero expansion substrates

• Back Focus is 28 cm from mounting surface

• 2 variable, low voltage power outlets for reticles provided on optical tube assembly

• 2 AC power outlets on optical tube assembly

• Finderscope: 5 in. F/9 with 2 in. dia, 32 mm focal length eye piece and projection reticle


• 47.5 in. diameter friction drive in RA and 42 in. diameter friction drive in DEC

• Open structure optical tube assembly affords better "seeing"

• Steel mirror cell with multiple 12-bolt patterns per KPNO standard

• Tracking accuracy: +/- 0.5 arc seconds in 5 minutes and +/- 3 arc seconds in 1 hour

• Variable set, guide and tracking rates: 0 to 3 deg./sec.

• Epoxy paint for durable, functional appearance

• Supports 200 kg instrument load with CG 36 cm behind mounting surface



Standard Classical Cassegrain

Custom Telescopes

Telescope Control Systems (TCSGalil™)

Telescope Optics

Equatorial Fork Mount

Observatory Dome and Pier