Ren original concept, control electronics, and all software programming, except for the. If you have the 76second error, it will be obvious there. Losmandy gemini 2 goto system retrofit kit add computerized goto capability to your losmandy gm8, g11, hgm200, or g9 equatorial mount with the gemini 2 retrofit kit. The losmandy gm8s equatorial mount and tripod is one of the most precise and finely crafted telescope mounts available today. The losmandy gm 8 can be loaded with up to 15 kg telescope weight. The constant, mentioned above, is a relationship between your latitude and the angular distance the celestial pole is above the northern or southern horizon.
The most recent version of geminis software, level 4, is provided with all. The first curve before pec was taken with 7 cycles and the second curve after pec was taken with 3 cycles. Losmandy g11 equatorial mount w gemini 2 goto system. I have never done any autoguiding before, but read many of the posts about it and read many adverts for kit that seem to range enormously in price. Losmandys gm8 motorized eq mount with tripod is an upgrade from the basic version of this mount with the addition of a dualaxis stepper motor assembly and a wired hand controller.
Orion 120 ed refractor telescope testing and losmandy gm8. On mine, the 76second peak swamped the others in the frequency chart. My findings on pe and the losmandy g11 stock worm gear before and after pec using pempro. The system can be ordered with all new losmandy mounts, or easily retrofitted by users who already own a g 8, g11 or hgm200 mount. Losmandy g8 equatorial mount, tripod and model 492 digital. The system can be ordered with all new losmandy mounts, or easily retrofitted by users who already own a. Losmandy gm8 german equatorial mount i purchased my losmandy gm8 mount in 1997 in preparation for the total solar eclipse of 1998. The contents of each box are as follows equatorial mount. Periodic error is a slight oscillation in right ascension caused. If you want to do some imaging w the guider turned off as in a star poor region, bright planetary nebs, or just laziness, getting the pe down may be a good thing ive done some few minute unguided exposures, w the mewlon, when i couldnt find a good. This was my first time using pempro and i followed the directions as outlined. I bought one as my first serious step into the hobby. Losmandy gm8 equatorial mount with tuckedin motors, lw tripod.
The gm8 is his lightweight mount that is well suited for stellarvue telescopes mm and smaller in size. Mar 24, 20 hi everyone,i have a losmandy g11 not gemini and would like to set it up with an autoguiding system. Pec is designed to improve photographic quality by reducing the amplitude of the worm gear errors. Archive eq6pro vs gm8 vs g11 equipment discussions. Furthermore, the mount also provides a connection for autoguiders. Operate this telescope mount in northern and southern hemispheres. Paul does not write code for the mac or other computers, so please dont ask him too. About the losmandy g11 equatorial mount scott losmandy is the designer of the worldfamous g11 mount and tripod that works with most popularsized telescopes for the serious astronomer. The gemini 2 system has many features designed to quickly and accurately point the telescope to an object, then track it with even higher precision than the previous digital stepper drive used by losmandy. The thanks of many a losmandy titan owner goes out to bob for permitting us to continue using these valuable materials. Gday, does anyone own a losmandy titan mount, if so how have you found it to be in tracking for ap and what have you mounted on it. Dovetail saddleplate fits both d losmandy style dovetail or vixen style dovetail.
German equatorial mounts are easily identified by their counterweight, which is used to balance the telescope across the primary axis of the mount, or polar axis, resulting in greater stability and weight capacity. Also and especially under the housings, scott losmandy uses firstclass parts. I bought my losmandy gm8 from telescope house and decided to choose the gemini option. Periodic error correction pec programs out drive errors for. Three astrophotography tracking mounts this is just one of many articles in the authors astronomy digest. Also paul is like me, he is not associated with losmandy in any way, and is freely donating his time and knowledge to help fellow gemini users. Losmandy losmandy gemini 2 upgrade camera concepts. The gm8 is his lightweight mount that is well suited for stellarvue telescopes mm. Scouring the internet for information as always, i found a host of other gm8. Buy losmandy gm8 motorized eq mount with tripod featuring motorized. Everyone i know that is a serious imager but needs the ability to setup and tear down their rig use losmandy. Upgrade your gemini 1 to the gemini 2 to take advantage of the latest goto system from losmandy, since you already have the servo motors installed on your gm8, g11, titan, or g9 mount, this upgrade is relatively easy. However, no machining is perfect, and the manufacturing is also constrained by the overall price target for the class of mount. The autoguider port is only active in the photographic.
The amplitude is reached over a broad smooth period, not jerky or rapid. The losmandy g11 equatorial mount has been around for so long that it has. Losmandy g11 german equatorial mount with dual axis motors and gemini 2 positioning system with hand pad. Including a fully locking, unique tangent arm design altitude adjustment for between 668 degrees, with a large knob for easy alignment. Company seven losmandy gm8 and g 11 mounts description page. Losmandy g11 goto mount with gemini 2 electronics the g11 is a mount with outstanding reputation wordwide and for good reason. In the nearly 20 years ive owned it, the g11 has remained one.
If you are using a reasonable image scale 12pix, and are willing to let your autoguider do its job, the pec may not be a big deal. A lot of suggestions for the cause and fixes were forthcoming from posts to the newlyformed losmandy egroup, emails with scott losmandy, peter ward of advanced telescope supplies where i purchased the mount and chris houghton of astrometric instruments, creators of the sky walker ii telescope controller. Losmandy gm8 mount with gemini goto systemlogm8goto. The losmandy gm8 mount is a beautifully machined mount made of aluminum and stainless steel. As an imagers mount, losmandy is unsurpassed as mobile imaging mounts. Click for larger image gm8 equatorial telescope mount elevation adjustment. This includes time, date, site name, latitude, longitude, altitude in meters, time zone offset, all three limits, and mount type. My losmandy g11s periodic error mounts cloudy nights. Depending on which accessories you ordered, your g11 mount was shipped in four or more boxes. Gm8 equatorial mount with tripod and dual axis drive. All of the losmandy g11s i have worked on had either a gemini 1 or gemini 2 system and achieved sub 0. The mount has pec periodic error correction for the worm drive in right ascension and tvc time variable.
The losmandy gm 8 mount can be adjusted from 0 to 64. Works with both losmandy style and vixen dovetails. Also paul is like me, he is not associated with losmandy in any way, and is freely donating his. A step that i recently took was trying to develop a pec curve, something which i was not formally familiar with. Explore scientific losmandy g11 pmc8 goto equatorial mount. The most recent version of geminis software, level 4, is provided with all new telescope mounts. Local 12 month warranty no need to return mounts to the usa servicing and spares based in. The pempro video interface application can work with any directshow or wdm compliant device including most capture cards and webcams like the philips toucam pro and meade lpi.
Hell, its even kinda controversial, if anything is controversial in our sedate little backwater of an avocation. Orion 120 ed refractor telescope testing and losmandy gm8 mount analysis moonlite cfl 2. Losmandy gm8 equatorial mount with tuckedin motors, lw. The losmandy g11 mount can be adjusted from 14 to 64. The losmandy gemini system is a dc servo motor based go to computerized positioning system designed by dr. I recently acquired a new losmandy g11 mount to complement a new c11 ota. Hello everyone, i wanted to give an update on my efforts to improve the guiding accuracy of my gm811. Pec training is not interchangeable from one side of the mount to the other. Losmandy gm8 equatorial mount gm8s losmandy gm8 equatorial mount all machined aluminum and stainless steel, black anodized. Losmandy g11 equatorial mount with tripod free shipping. Losmandy gm811ghd computerized goto equatorial mount with hd. Since 1981 scott losmandy has produced high quaity, american made equatorial mounts. All black anodized, machined alumnium and stainless steel mount.
Since then, ive used it to do deep sky astrophotography with an astrophysics mm starfire edf refractor, and have photographed both solar and lunar eclipses with it. First, lets talk about the losmandy g11 equatorial mount, and then we will tell you all about the innovative opengoto computerized drive system by explore scientific. A losmandy g8 equatorial mount with tripod and losmandy model 492 digital drive system. Losmandy gm8 and g11 german equatorial mounts since its introduction in the spring of 1992 the losmandy model g11 german equatorial mount has come to represent the best value in its class and a particularly attractive choice for those who require a high degree of tracking precision and reliability. After a small learning curve i love my losmandy gm8 gemini mount. Owners of a losmandy gemini system are entitled to upgrade to the current software. Polar alignment of your equatorial mount the blog formerly. If you can afford the losmandy mount in the weight class youre looking at, then get it fwiw, gemini goto can be a pain from my minimal experience with it a lot of users opting to go with the nongoto digital drive mount with encoders and an argonavis. Losmandy gm8s equatorial mount with stepper motor drive the losmandy gm8s is ideal for all amateur astronomers who want to use a highquality mount for astrophotography, without goto but with highest precision.
Losmandy gemini 2 retrofit kit for gm8, g11, hgm200. The gm8 is a fine german equatorial mount, solidly built and capable of carrying an 8 sct without difficulty. I ordered the hypertune kit and pulled it apart and did the service, after that. The losmandy gm8 is portable and im able to move it around with the tripod and mount connected together. On most such mounts, the drive motor turns a worm gear which, in turn, drives a large disk gear attached to the right ascension axis. The orion 120ed is a doublet objective lens, semiapochromatic refractor. The losmandy gm8 mount is a highprecision portable 30 lb. My eslosmandy g11 mounts periodic error pe is higher. Losmandy gm8 s german equatorial mount wiith stepper. Review of losmandy gm8 telescope mount update 5may20. The gemini 2 is a dc servo based goto computerized positioning system, and inc.
Allows for the interchanging of any tube assemblyreduces need for dec. The stability could be enhanced by a better tripod the g11 tripod is an excellent match for this mount. Namely, an astro physics, takahashi, software bisque paramount or vixen atlux. It is made entirely from machined aluminum and stainless steel with all stainless steel hardware and a black anodized finish. Company seven losmandy gm8 and g11 mounts description page. Made by an astrophotographer, for the astrophotographers. Learning by experience and responding to increasing demands from demanding. This was purchased in 2005 and was stored, apparently never used by the owner due to declining health. The losmandy gemini 2 system is a dc servo motor based goto computerized positioning system designed for the losmandy hgmtitan, g11, and g8 mounts.
There is little chance of your cables getting snagged with the gem45s internal advanced cable management system. If you are using the original losmandy hand controller, soldering a capacitor of about 4. Equatorial mount adjustable tripod legs, leg clamps, counterweight shaft. The mount has pec periodic error correction for the worm drive in right ascension and tvc time variable compensation of the backlash in declination. The machined parts are very high quality with good fit and finish. Astrobin is an image hosting website specifically targeted to astrophotographers.
A new, patent pending universal selfcentering saddle uscs accommodates losmandy and vixen style dovetail plates. When one employs the periodic error control circuit of the gemini, specialized software. Losmandy gm8 equatorial mount gm8s telescopes at telescopes. The losmandy g11 glt is a high quality german equatorial mount with a 60 pound instrument capacity. Losmandy g11 goto mount with gemini 2 electronics and tripod. There is no guarantee that all the information is correct, but strives to provide the best information possible.
For those not interested in goto gadgetry the stepper version has also been improved with the conversion from hurst to saia motors, which reduce vibration and are very quiet. If youre tired of messing around with equatorial mounts that just cant handle your observing and imaging requirements, the losmandy g11 is definitely worth a look. This mount provides astrophotographers with a solid platform to mount their smallertomidsize schmidt cassegrains and refractors along with the other instruments that constitute their astrophotography rig. Losmandy titan discussions mounts stargazers lounge. Gem45 mounts utilize reliable stepper motor drive systems with our low power consumption technology. Digital drive box, hand control, cables, mounting bolts, allen wrench, counterweight safety screw. This can be a complex issue, but when dealing specifically with the es losmandy g11 pmceight mount, there are a few specific areas to investigate. Examples of mounts that i know have such a hole include the celestron cg5, stellarvue m4, orion skyview deluxe, losmandy g8 and g11, skywatcher eq3 and up, etc. You need an 512kx8 eprom in the dip32 package, up to 120ns access time, 150ns usually works, too. On the g8, periodic error will be 2x the g11, because it has 180 teeth. For astroimaging with telescopes of this size we recommend the gm811g as the best solution since it has the same ra gear as the g11, which tracks more.
This is the mount that many of our more serious imaging customers graduate to once they have exceeded the capabilities of the more entry level mounts. Three astrophotography tracking mounts professor morisons. The gemini system is very accurate, and allows using up to 250 alignment objects increasing the precision manyfold. The losmandy g11 equatorial mount features an fhd tripod and a gemini goto system. The gm8 is perfectly suitable for astrophotography. Mine is the nongemini version as i chose to go build a push to rig. If you have the g11 fitted with gemini and have the losmandy polar scope, then you may have noticed that if you adjust the polar scope so that it rotates nicely with the ra clutch loose, then when you tighten the clutch the polar scope starts binding. The losmandy gemini system by contrast is fully competitive with the major companies software, and has been adopted by two other makers of equatorial mounts. The losmandy g11 mount losmandy astronomical products.
This can be done by replacing geminis socketed eprom chip. Three astrophotography tracking mounts professor morison. Losmandy polfinder ps for gm 8, g9 and g 11 mounts. Review of losmandy gm8 telescope mount rogers website. The mount is well designed, and extremely smooth tracking. Goerlich, a customer of company seven, for the losmandy titan, hgm200. With welded construction and 3 inch diameter legs, the g11s tripod is rock solid. I also recommend you do not fiddle with your hardware at all until youve determined you can get the best out of your software. Off axis polar scope, works in northern and southern hemisphere polar scope optional 7 lb and 11 lb extra counterweights available. Taking wide field images of the heavens is now quite an important part of astrophotography with photographers travelling to dark sky sites with minimal equipment to capture what can be stunning images of the constellations and the. Its a fairly heavy lump but doesnt present too much of a problem if only being moved from the house to the garden. And if you have the 76second error, pe wont correct it. If you have been an amateur astronomer for any length of time, you are well aware of the quality of losmandy products. This web site is not associated with losmandy hollywood general machining inc.
Unlike other methods that require you to find the celestial pole by identifying certain stars near it, this method works off of a known constant to determine how high the polar axis should be pointed. Company seven losmandy gm8 and g11 mounts description. All data represents actual results collected from a comprehensive pempro user survey. It is the top of its line in pricepoint and provides tracking, features and results of a much more expensive mount. I purchased my losmandy g11 mount way back in december 1993 in order to carry an astrophysics 105mm traveler. It hasnt been that long back that i talked about german equatorial mounts, gems, but that is a subject that is of such of interest to joe and jane amateur astronomer that its time to say more. The microstepper motors fullcircle brass wheel gear allows the mount to track over extremely long periods, with little error, for longexposure astrophotography or prolonged observation of a single celestial object. The losmandy gm8 equatorial mount users manual depending on which accessories you ordered, your gm8 mount was shipped in two to four boxes. This level is also available as a simple plugin upgrade to anyone who already owns level 1, 2 or 3. Losmandy gemini system the losmandy gemini system is a dc servo motor based goto computerized positioning system designed for the losmandy hgm200, g11 and g8 mounts.
In addition to the atlas nipping at its heels on the low end, theres the g11 just one click higher. Gm8 mount with gemini goto system gm8 mount with the gemini servo goto system factoryinstalled. Now he has done it again with the gemini firmware updater. Strangely, the expensive celestron cgeseries mount original version does not have this hole, and relies entirely on the software method described below. Losmandy gm8 s german equatorial mount wiith stepper motor. Company seven losmandy gemini go to computer control system. A window is displayed showing the right ascension and declination positions of the star plotted against time.
The losmandy gemini system is a dc servo motor based goto computerized positioning system designed for the losmandy hgm200, g11 and g 8 mounts. Losmandy gm811ghd equatorial goto mount with fhdma. These high quality mounts are perfect for your telescope and come packed with a variety of features. I added an astro devices dsc kit to be used with sky safari pro 6. Working with the wonderful resource, by the name of michael herman, i was able to collect the necessary data that enabled its generation. Losmandy g11 equatorial mount with gemini goto system. A lifelong amateur astronomer, designer, and machinist, losmandy understands the functional requirements of demanding astrophotography and astronomy.
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