Losmandy HGM Titan w/ Gemini 2 GoTo - Equatorial Mount Only - DISCONTINUED
Losmandy HGM Titan Mount
- All machined stainless steel and aluminum, black anodized.
- Shafts, 1.968" diameter stainless steel tubing, .250" wall thickness.
- Worm gears, 6.750" diameter, 270 tooth, 7075 aluminum - special coated.
- Worms, heat treated and ground stainless steel.
- Single piece worm housing construction, double ended, ball bearing supported with adjustable preload.
- Tracking: +/- 5 arc sec. or better.
- Low temperature operation: 0 F
- 5.062" diameter needle thrust bearings.
- 3.500" diameter sealed ball bearings.
- 3.100" diameter sealed ball bearings for worm gear.
- Fully locking, unique tangent arm design altitude adjustment, 12-70 degrees, large knob for easy alignment.
- Laser engraved latitude scale in 2 degree increments.
- Single knob azimuth control, bi-directional +/- 10 degrees, X/Y axis leveling bubbles.
- Variable slip clutch, 6.0" diameter both axes, one knob design.
- Full 360 degree rotation in both R.A. and DEC.
- Fully enclosed R.A. and DEC. worm and worm gear.
- Photographic instrument weight capacity 100 lbs.
- Equatorial Head weight 75 lbs. Breaks down into R.A. 37.5 lbs. & DEC. 37.5 lbs.
- Removable counterweight shaft with safety stop, 1.25" diameter.
- Includes two 21 lb weights.
- Split dovetail saddle plate design, 1.00" X 6.00" X 8.00"
- Dovetail plate drops in and locks allowing for interchanging of any tube assembly - reduces the need for DEC. weights.
- Accepts all "D" series dovetail plates.
- 7 lb and 11 lb extra counterweights available
- Off axis polar scope, works in Northern and Southern hemisphere. (Polar scope optional.)
Gemini 2 can be used as a stand alone system in the field. It can be powered by any 3A, 12-18 Volt DC source. No personal computer is required. A user brightness adjustable Touch Screen Display allows navigation through all internal databases for field use without a PC. The following databases comprising of over 40,000 objects are built into the Gemini system, more than enough to keep even the most avid observer busy for some time!
- 168 BSL.guc
- 303 Combined_Constellation_Stars.guc
- 5437 IC.guc
- 1125 LBN.guc
- 1787 LDN.guc
- 110 Messier.guc
- 8290 NGC.guc
- 1143 PN.guc
- 17636 SAO.guc
- 313 Sh2.guc
- 223 Southern_Constellation_Stars.guc
- 3988 WDS.guc
- Full Color Graphic Touch Screen clearly displays all functions
- Classic four-button pattern for guiding, centering, moving and slewing on both the touch screen and a tactile membrane on the rear
- Support for the original four-button controller
- For Losmandy GM8, G-11 & Titan mounts
- Custom mount support using the Programmable Gear Rate function
- 8???/sec Slew Rate (GM8)
- 0.5 arcsec positional accuracy
- DC Servos for improved accuracy with higher torque than stepper motors
- GPS-compatible with optional receiver
- Stand-alone system. No PC required!
- Ethernet 10/100 with full IP function permits operation from anywhere using a browser, ASCOM, or app over the web or serial port
- Non-Volatile Memory and Real-Time Clock
- Two USB ports; Virtual COM to PC, ASCOM or planetarium program
- Port E - future high-res encoders
- Port F - multi-function serial; A/D I/O
- Firmware upgrade via internet
- PEC correction
- Auto-Guide port (TTL)
- Dual 12~18V DC input/output (1.5A)
Gemini 2 uses a Meade LX200 command sub-set, with most LX200 commands being implemented. The user can update the internal real time clock via a GPS unit, as well as user location information. Coupled with The Sky by software Bisque and CCD camera, users can confidently determine the positions of minor planets and comets, and place them on a CCD detector time and time again.
The Gemini 2 design incorporates surface mounted PC board technology for reliable performance in the field. The main control board also has auto-guider and accessory ports to allow full remote control of the system via a Web server from anywhere in the world. (Gemini 2 has been successfully tested with Software Bisques IAS server software).
The Gemini 2 system has built in "T-Point" like pointing software that can use from one to many stars to refine its pointing accuracy. With multi-star modeling pointing accuracy has been measured to within three arc minutes around the entire sky, and to less than one arc minute with short slews from an updated position located within a few degrees of a reference object. Gemini 2 is also fully T-Point (Software Bisque) compatible. Extended personal computer based T-Point modelling runs can give better than 1 arc minute positioning accuracy across the entire sky! Further, with Gemini's warm re-start option, previously stored PC T-point data can be reused without the need to conduct a short mapping run.
How accurate is Gemini?
Pictured is a T-Point summary of a 60 star mapping run with a Losmandy mount fitted with Gemini 2. Note the Sky RMS pointing of 26.27 arc seconds. While some manufacturers claim incredible accuracies with their GoTo systems, few will actually state actual results as shown above. While single star alignment assumes that your Losmandy mount is accurately polar aligned, the Gemini 2 system only requires rough polar alignment to deliver excellent pointing accuracy across the entire sky using multi-star alignment models.
Losmandy Product Number: HGMTITAN2
Always the best cnoentt from these prodigious writers.
I have used this excellend mount for over 6 years, both in the field and now permanently mounted in my observatory. It readily holds a C-14 plus accessories weighing over 60 lbs and used mostly for astro-imaging. While the older version Gemini 1 GoTo took some getting used to, once mastered it proved very accurate and effective. Also important, if servicing is needed, Losmandy is there for you.
I have owned my Titan over four years and am very pleased with its performance. It carries a 16 inch Newtonian weighing close to the maximum recommended payload capacity of 100lbs. My main interest is astrophotography. I routinely acquire 20 and 30 minute autoguided subexposures at a focal length of 2,100mm. Even without PEC, I consistently get round stars with low FWHM values limited only by seeing.