- Optical Tube Assembly: Optical Guidance Systems (OGS) RC24 Ritchey-Chrétien
Primary Diameter: 24.0 inches (609.6 mm / 0.61 Meter)
Mirror Substrates: Corning ULE® (Corning Code 7972), an ultra low expansion titania silicate glass
Specular Precision: 0.154 or ≅1/6.5 P-V, and 0.0233 or ≅1/43rd RMS
Optics Figured by Paul T. Jones, Star Instruments
Mirror Coatings: Protected AG (Silver on Primary and Secondary Mirrors)
Coatings Transmission: 98% reflection typical from 300nm to 2 microns
Focal Ratio: f/8.0
Focal Length: 4,880mm f/8 or 3,650mm at f/6
Image Scale: 42.1 arc sec/mm
Tube Diameter: 29 inches
Tube Length: 66 inches
Tube Cooling: 12 Volt DC fans (active cooling)
Tube Material: AL
Focus Stabilization: with AL tube and Invar 36 frame
Focuser Tube I.D.: 4.2 inches
Available Back Focus: 11.5 inches
Secondary Diameter: 8.5 inches
Secondary Focus Range: 12 inches (electronic, remote and local control)
Axial Port Focus: Astro-Physics 4 inch rack and pinion (manual or electronic control)
Guide/Auxiliary Telescope: Astro-Physics 130mm f6.3 EDF ∗
Finder Telescopes: two 11x 70mm, 4.2 degree actual field of view (new in 2010)
∗ While originally delivered with a fine Takahashi 5 inch Apo instrument, the Tak was sold and replaced with a new Astro-Physics 130mm f6.3 EDF thus rendering this entire OGS system fully and accurately "Made in the USA" as explained below.
Telescope Related Reference Information:
MCCMO 24 inch telescope eyepiece & CCD specifications, one page .pdf document.
Click on image to see actual .pdf data sheet (116,152 bytes).
Interfereogram of the MCCMO Telescope Primary Mirror
0.154 or ≅1/6.5 P-V, and 0.0233 or ≅1/43rd RMS - tested across the full aperture.
- Mount: Optical Guidance Systems Model OGS-140 Fork (fully modernized in 2010 to current "Go To" standards)
Aux. Instrument Cap. 75 lbs. (in addition to the basic RC-24)
Tracking Precision <1 arc sec RMS (after modeling)
Pointing Precision <30 arc sec RMS (after modeling)
R. A. Drive 18 inches Dia., 584 tooth worm gear & ball bearing worm
R. A. Worm Period 2.63 Minutes
DEC Drive 15 inches 360 tooth worm gear & ball bearing worm
Shafts 6.0 inches ¯ (140mm at R. A. bearing ends; 75mm at DEC ends)
Motors Five-phase nano-step
Axis Intersection 72 inches from base of pier (at 40 degrees)
Gear sets made by Edward R. Byers Co., their finest precision series
Fork Swing Clearance 18 inches
Fork Weight (system) 1,025 lbs. (465.9 kg)
R. A. Counterweights 2 x 5 lbs.
Pier 32 inches high
Fasteners 18-8 stainless steel
Worm Gears fully encoded for closed-loop position feedback
Fully integrated with Comsoft PC-TCS for 100% remote control
- Ash Dome
Diameter 5.02 Meter (16 feet 6 inch)
Constriction Aluminum with a base structure of steel and aluminum
Fully integrated with Comsoft PC-TCS for 100% remote control (shutter and rotation)
Model REB with dropout Shutter Lower Door (view from 0 to 105 degrees elevation)
Refer to our Dome Specifications and Arrangement page.
- Control System
COMSOFT PC-TCS - Controls telescope and dome simultaneously
A third party planetarium software with GUI (graphical user interface) is used for easy routine control of COMSOFT
The MCCMO telescope OGS optical tube assembly with Secondary Mirror focus and control system, Astro-Physics 4 inch Focuser, Star Instruments mirror optics set, the OGS fork mount and Byers gear sets, the COMSOFT control system, and the Ash Mfg. dome and motors too are:
This practice gives this system the highest degree of quality control. By designing and manufacturing here in the USA we have direct control over the exact requirements as well as the craftsmanship of each component, and with excellent and prompt periodic service or upgrade support if ever necessary.
There is no law that requires most products sold in the U.S.A. to be marked or labeled as such, or make any representation about their amount if U.S. made content. However we guarantee our ATA cases comply with the United States Federal Trade Commission's 'Made In USA' policy. For a product to be called Made in USA, or claimed to be of domestic origin without qualifications or limits on the claim, the product must be "all or virtually all" made in the United States. The term "United States" as referred to the the FTC's Enforcement Policy Statement Complying With The Made In USA Standard, includes the 50 states (yes including Hawaii), the District of Columbia, and the U.S. territories and possessions. The term "all or virtually all" means that all significant parts and processing that go into making the product must be of US origin; that is to say the product contains none or virtually no foreign content.
Auxiliary Telescopes & Mounts*: suitable for local or possibly for loaned uses
* Other even more capable telescopes are on hand, but their availability for service will be determined by our capacity to house them safely.
- Celestron Ultima 2000 Schmidt-Cassegrain with Alt-Az Computer Controlled Mount
- Meade 8 inch f/10 LX-100 Schmidt-Cassegrain with Fork Equatorial Mount
- Celestron StarHopper 10 Dobsonian telescope with Alt-Az Mount
- Meade 10 inch f/10 LX-200 Schmidt-Cassegrain with Alt-Az Computer Controlled Mount
- JMI 'NGT Series' 12.5 inch f/4.5 Equatorial Newtonian with low profile open Serrurier truss design frame, split-ring equatorial drive, rotating nose assembly.
- Losmandy HGM-200 German Equatorial Mount.
- Software Bisque Paramount GT-11000 "Go To" computer controlled German Equatorial Mount (shown below and right). This apparently was never installed or used. We are likely to sell it so that we standardize our operating systems with those of the OGS-24 telescope and Astro-Physics "GTO" control systems.
Right: JMI 'New Generation Telescope' (NGT) series 12.5 inch aperture model.
Click on image to see enlarged view.
Above: DayStar filters close ups of the Sun. Hydrogen Alpha at left by Dave Tyler, United Kingdom with a comparatively simple 0.5Å T-Scanner model filter.
And seen at right as imaged with Single Cavity 2.0Å Calcium K-Line Filter.
Click on either image to see enlarged view.
- Ash Dome Manufacturing Catalog Complete 16 page color illustrated catalog of these domes with fantastic illustrations of how some individuals and universities have incorporated these domes in artistic ways. By Ash Manufacturing, (6,012,361 bytes in Acrobat Reader ".pdf" format).
- Celestron Ultima 2000 Telescope Complete instruction manual for the Ultima 2000 telescope. A good overview about the use of Celestron Schmidt-Cassegrain computer second generation controlled telescopes and the Ultima OS. By Celestron International, (4,350,856 bytes in Acrobat Reader ".pdf" format).
- JMI NGT-12.5 Owner's Manual Complete instruction manual for the NGT-12.5 split ring mount, equatorial Newtonian telescope. A good overview about the assembly, collimation, and operation of the telescope and its associated electronics. By Jim's Mobile, Inc. (360,897 bytes in Acrobat Reader ".pdf" format).
- Paramount GT-1100 Robotic Telescope Mount User's Guide Revision 1.2, 1998. Complete thirty two (32) page instruction manual for the robotic computer controlled German Equatorial Mount. A good overview about the assembly, collimation, and operation of the telescope and its associated electronics. By Software Bisque (785,275 bytes in Acrobat Reader ".pdf" format).
Right: Paramount GT-1100 Robotic German Eauatorial Mount on optional Pier.
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Click here to download the software free from Adobe's web site.
For the time being feel free to contact us through Company Seven with any questions or suggestions.