Gemini 1 replacement rs232 (rj9) socket
6
Hi Everyone! I haven't been on here for a while, but I have decided to revive my old original Losmandy G11 with Gemini 1. Unfortunately I damaged the rj9 socket on my Gemini 1 rs232 port removing a cable that had corroded in place. Does anybody know where I can find a replacement pc board mount rj9 socket? And/or is it possible to use one of the other ports on the board (like the feature port right below it) to connect to a serial port? Thanks! Tom
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Gemini 2 L 6.02 Needed to Be Re-Flashed
6
I've been running L6.02 for 7 months, since May, and it has run beautifully.... my guide error went way down as compared to L5, and my plate solving got a lot more accurate. Then, about a week ago, my plate solving all of a sudden crashed. Normally, I can get within 10 pixels of error for both RA and DEC, but all of a sudden, I could not get any better than 600 pixels error for RA, and around 3000 pixels for DEC. The error started initially at much larger values, and would get better for successive solving attempts, but never got better than 600/3000. I use ASTAP in SGP for my plate solving, and I kept double checking all the specs for camera and plate solving, and could not come up with any setup mistakes. So..... I re-flashed Gemini to L6.02 again with the GFU. I did a Cold Start and synced on a bright star. I then slewed to 2 different objects, 2 different solving attempts. On the first object, I solved to less than 10 pixel error for both axes on the 3rd attempt, and on the second object, I solved to less than 10 pixels both axes for the second attempt. I am convinced a re-flash of L6.02 was necessary, and fixed my plate solving problem. Has anyone else had to do this? What could have caused this? It seems as though somehow L6.02 got corrupted. Thanks in advance. Dan
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In search of 492 systems for G11 and GM8
22
I really prefer using the 492 system in conjunction with the DSC Pro but I've got a G11 and a GM-8 with Genesis I systems that I'd really like to convert over to the 492 system on each. I'd need the whole shootin' match - including motors. I may end up placing a wanted ad on CloudyNights but figure most everybody here already reads those posts and I feel safer here. Please let me know whatcha got! Warren
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Losmandy/Celestron CG-11 Mount
32
Hello All, I am brand new to both AP as well as this forum. Really looking forward to getting to know both intimately. Although I am new to AP, I have been shooting with long lenses for a while and I have good collection of them that I would like to put to good use. I have a iOptron SGP which has so far served me well for WF imaging, but I am looking for something a bit more heavy duty. I am not at all interested in fully computerized goto mounts as I want to grow into the hobby organically and upgrade only when I am ready for it...I feel quite strongly about this. I have been offered a CG11 (or G11) locally, but not knowing a whole lot about these, I wanted to solicit opinions here. What I know so far: I think it's an early Losmandy non-goto model when they were making mounts under the Celestron brand? It comes with the Celestron Digital Drive system. I am waiting to get the serial number. Seems like the full setup with tripod, polarscpe etc. Checking to see if the polar scope is illuminated or not. My questions: is how risky is this purchase given the age of this mount and potentially availability of spare parts in case something goes wrong? I have read only good things about the reliability of Losmandy mounts, but still. Are these still supported by Losmandy and if something goes wrong, how much money am I looking at dropping in getting the mount fixed? What is a "good" price for the mount? And finally...if I do decide to purchase this mount, what kind of tests should I look to do befor getting it? My backup option is the Orion Skyview Pro which is a whole lot cheaper, but also has a lower payload capacity. Would really appreciate any/all advice. Sincerely, Avi
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ASI Air Communication with Gemini 2 L6.02
14
My astronomy club has a Losmandy Titan mount, recently upgraded to Gemini 2 L6.02. We are looking at purchasing a camera for our scope, and we're looking at the ZWO ASI 2600MC Air, with the built-in Air feature, that could wirelessly communicate with mount. I am used to using a laptop PC to control the mount via Ethernet. I don't think ASI Air, or this camera, has an Ethernet port. It does have USB, and I know the control board on the Gemini 2/Titan has a USB port.... which I've never used. Has anyone used ASI Air successfully to control a Gemini 2 mount? Thanks in advance. Dan
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Losmandy tech support
10
Do these people answer tech support questions? I get no responses to any questions.
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Question about selling gear
5
Folks- I don't want to veer out of my lane and misuse the group. What is the procedure for posting info about some gear I have for sale? (apart from going to AstroMart, Cloudy Nights, etc.) Thanks.
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Wanted in UK: Losmandy TItan or HGM-200
2
Is anyone in the UK wanting to unload a Titan (or even an HGM-200)? If so, I’m interested. I will do a swap for a G11 plus whatever if you’re down-sizing. Cheers, David Please click here to support DeepSkyStacker development
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So, the inevitable happened last night
6
I was out last night on a fairly nice, clear night watching and imaging the planets and around 1am decided to hit the sack for a few hours so I could look at the sun come morning. Since it was clear and not a single cloud out I thought I’d save time and effort by leaving the mount out, already setup for the morning session. Well, you can guess what happened during those few hours. The mount was drenched when I went out. At some point a rain shower must have sprung from nowhere to spoil my plans. I was relieved I didn’t leave the scope on as well. I’m not sure where I’d be if the scope got wet like that lol Now to my issues. I took the G2 control box off the mount and brought it inside for cleaning and drying. Thankfully there was no water inside the box but, should I be worried about the connectors? I’m particularly worried about the DIN connectors as those seem to be more finicky and delicate? I sadly do not have immediate access to deoxit or something similar, any alternatives I could use if needed? As for the mount’s mechanics, should I clean and relube everything? Just dry it all as best as I can and let it be? Something in between? My main concerns would be the motors, gearboxes and worm mechanisms. I wish I could say lesson learned but, I know myself lol. And to show Murphy does really exist, this all happened a few weeks before I get my telegizmos cover that I purchased a few weeks ago. Dangit Thanks for your help Jonathan
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Immediate RA Stall on startup
6
Hello community, I recently took my Gemini Units to Losmandy for a hardware/software upgrades. On returning them to the mounts and turning on the power, I get an immediate and repeating RA Stall on the HC. I tried a number of things to get it working...releasing the worm completely, reducing Slew speed to 400, 2 different AC adapters @ 12V and 15V, tried a 12V LiPo (which is what it always ran on previously), swapped RA & Dec cables....nothing seems to work. I have an email out to Losmandy, and they are wonderful to work with so I expect to hear from them soon. I thought to ask the group here in the mean time. Thank you!
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New AZ8 owner
2
I just purchased a used but like new AZ8. I owned a G11 from the Celestron days so I am familiar with Losmandy products. I have the typical stiction in the movement of the axes and the stuttering of the slo-mo controls. I have read just about every online discussion on this mount and have dialed in the worm pretty good where there is little backlash and the stuttering is fairly minimal. But for the stiction in the axes, what I am referring to is the "pop" when an axis starts to move. It happens even with the clutches fully loosened but, of course, more so when the clutches are tightened up a bit. Everything I read about the clutch pads is that they need to be dry. This makes sense for the G8 and G11, but for the AZ8, we want the clutches to only be engaged enough to prevent any minor off-balance issues from moving the mount. So what I did was apply a very, very thin layer of a low viscosity telfon grease to the clutch pads. I mean a very thin layer. Now the axes move without any popping even with the clutches fairly tight. It is very, very smooth. With grease on the clutch pads, the axes will easily move with a little bit of force even with the clutches fairly tight. So beware of any major balance issues in Altitude before you let go of the scope. But there is still plenty of clamping force to deal with minor balance issues. This is not an issue with the AZ axis since it is vertical. For all you AZ8 owners, give it a try. You can always remove the grease.
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Hand controller opening up in “Night Mode”…
4
I’ve been having a problem with the hand controller starting up in “Night Mode” when I turn the Gemini 2 unit on. The battery is new, I’ve reseated the SD card and reseated the screen. I can set it to “Daytime Mode” and it turns green. I can set it to “Dawn Mode” and it turns blue. When it starts up, it is marked as “Daytime Mode” but displays red for “Nighttime Mode”. The adaptive color box is checked. I uncheck it and it turns to “Daylight Mode”. I can turn the unit off, turn it back on and it opens up in “Nighttime Mode” and the adaptive color box is checked again. Can someone shed some light on how to solve this? It’s got me scratching my head. Thank you in advance!
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PemPro settings for G11T
3
Hi folks, Does anyone know which mount or mount settings to use for PEMPro for the G11T? That specific mount doesn't show up on the list. Do I just input the settings manually? George
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Different tripod for the heck of it
3
I have used my G11 these past twenty years on a variety of different tripods. The standard G11 tripod it came with is excellent. The Berlebach wood tripod is easier to handle in snow. Less known and very pricey is the 10micron Aries tripod. The easiest to pack up and put in the car by a long shot. And takes up the least space of everything I've tried. (pictured is G11 carrying AP GT130 and CFF 92, with h-alpha and Herschel wedge respectively). -Greg N
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Nextstar 8se & a G8 - need help with dovetail
20
Hi All, I'm a recent joiner here. I was fortunate to purchase a well taken care of G8 with an extension between the tripod and head. It’s has the 492(?) drive system. I have been using a 4.25” Orion Newtonian and a GoTo Celestron 8se with the computerized single arm mount. I’d love to fit the 8se onto the Losmandy. But the dovetail bar on the ota is about an inch narrower then the mount accepts. I also received a dovetail plate with the mount that I’m hoping to find specs for. Maybe I could attach the Celestron bar to this unknown one which fits perfectly on the G8 mount. But who knows just yet. Thank you for any suggestions anyone may have. pete
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Problem with PEMPro not drawing in all needed G11G (Gemini 2) Mount & Camera info for valid PE review and analysis
4
Hi, I posted an issue over in CN Software, but I don't seem to be getting someone who may know the answer. I decided to map out and see about improving the basic PE in my mount using PEMPro. I have solved an earlier issue with connecting the mount and camera, but now, on the data gathering runs I have made o far, I can't get the log files to consistently suck in all the complete mount/camera scale information and tracking data for that run that allows proper analysis and follow-on PEC curving when reviewing the data. There has been a few occurrences when it did get all the right info, but I can't figure out why on some runs and not on others, usually the ones that worked are after I repositioned the scope, but I don't think it has anything to do with the repositioning, but rather with the integration between the information coming from ASCOM on the mount and camera, versus what is loaded into PEMPro directly or as default. Or maybe the way I connect the devices, but I have tried different things and there is no consistency to when this happens and when it doesn't. I have run the mount wizard and the calibration wizard, I get thru those ok, but it seems to have no affect. On the log files with the missing info, PEMPro wants to use its default values (such as worm period of 10) to create the PE chart and PEMPro Log Viewer will not properly run on those files at all because of the missing info (it doesn't have default values) , if I cut and paste in the info from the runs that did work I can get Log Viewer to work on those files. On the collected data side, on those data runs that have the missing mount/scope info, there is also a missing data element that is seemingly important, it is the value in the column with the Controller Step for each exposure, that seems to be important for curve loading, it puts 1's in there instead of the step location....below are examples. I am sure this is something simple, like what I am connecting first, or how I set up for the runs, but can't figure it out. BTW I do have to Bin 2 just to get it to work thru calibration due to the file size on Bin 1 on that camera. Any ideas are appreciated. A Data Run Log File Extract Showing some of the Missing Mount/Camera info: # Gemini Firmware # # Gemini PEC Status # 0 # Gemini Worm Teeth # -270 # Gemini Guide Rate # 0.5 # Gemini PEC Guide Rate # 1 # Gemini PEC Cells # 12800 # Gemini PEC Max # 25600 # Gemini RA Spur Ratio # 25 # Gemini RA Encoder Resolution # 256 # Gemini RA Multiplier # 1 # Gemini PEC Worm Cycles # 2 # Gemini PEC Table Period # 0 # Gemini Minimum Step Size # 0 # Gemini PEC Index # 1 # Gemini PEC Phase # 0 # Camera Software # ASCOM # CCD Dimensions # 6280 4210 # CCD SubFrame # 50 x 50 # CCD Binning # 2 # Worm Period # 0.0000 # Rotation # 89.6270 # Reverse # False # Invert Curve # False # PEC State # PEC OFF A Data Run Log File extract from the same area from a good data file: # Gemini Firmware # 5.21 # Gemini PEC Status # 0 # Gemini Worm Teeth # 360 # Gemini Guide Rate # 0.5 # Gemini PEC Guide Rate # 0.5 # Gemini PEC Cells # 12800 # Gemini PEC Max # 6400 # Gemini RA Spur Ratio # 25 # Gemini RA Encoder Resolution # 256 # Gemini RA Multiplier # 1 # Gemini PEC Worm Cycles # 2 # Gemini PEC Table Period # 478.68939183834 # Gemini Minimum Step Size # 0.5625 # Gemini PEC Index # 1119 # Gemini PEC Phase # 41.8479241771174 # Camera Software # ASCOM # CCD Dimensions # 3140 2105 # CCD SubFrame # 50 x 50 # CCD Binning # 2 # Worm Period # 239.3447 # Rotation # -89.7188 # Reverse # False # Invert Curve # False # PEC State # PEC OFF Sample data line missing Stepper info (See 1's): 1 0:00:00.000 1606 198 26.024 26.347 32767.00 1 C:\Users\User\Documents\CCDWare\PEMProV3\Images\PEMPro_Ascom_0001.fit 2 0:00:03.191 1606 200 26.075 25.009 32767.00 1 C:\Users\User\Documents\CCDWare\PEMProV3\Images\PEMPro_Ascom_0002.fit Sample data line with good Stepper info (See 1431, 1516): 1 0:00:00.002 174 734 24.303 26.228 32767.00 1431 C:\Users\User\Documents\CCDWare\PEMProV3\Images\PEMPro_Ascom_0001.fit 2 0:00:03.167 174 736 24.040 23.385 32767.00 1516 C:\Users\User\
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Detailed dimensions for D SERIES DOVETAIL PLATE FOR MEADE 14" OTA ?
5
Hi, I'm looking for the dimensions(particularly the hole spacing) for the D Series Dovetail Plate for Meade 14" OTA. A cad .Step file would be best, but a pdf will work just as well.
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Tripod leg carrier
5
Greetings to the group, Has anyone considered building a carrier or caddy to organize and transport Losmandy tripod legs? This might seem trivial, but I'm just looking for the most efficient way to carry the legs around without banging them or nicking them up. I have the older no-folding legs that are inserted into the tripod head. Any ideas out there? Lloyd
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Does G11G keep polar alignment when adding/removing heavy scope
6
Forgive me if this is posted somewhere, but I did a search and I couldn’t find exactly this. I am at a fork in the road on building my observatory. Either a very small outhouse type covering just my G11G on a pier or a bigger observatory where I can put my scope on the G11G that on the heavy duty tripod. The first is super cheap. The second is super convenient. If I go the first route, I will take my scope off after every imaging session and then put it on to start the next one. I only get two image sessions at most a week for a couple hours a night, and as usual for most of us, there are long sessions of weather, full moon, etc. where I cannot image for weeks at a time. The scope will be kept fully assembled and wired up in a warm room about 10’ from the pier when not used. My scope is a Stellarvue SVX 140 and loaded up it pushes 35 pounds. If I very accurately PA the G11G on a pier and then set my scope on it for the next session will the PA stay accurate for doing this many times? Avoiding PA most of the time is the main point. This is the last question on which route to go. A permanent pier with a removable scope and a very small outhouse type of rolloff building (or even lift off) or the much bigger affair where I just turn the power on after rolling off the roof. Many thanks
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G11G DEC Stall
34
Hey all! I just rebuilt my observatory over the last ten months and had my 2017 G11G with Gemini 2 controller safely stored inside my house (A/C). I’ve remounted the G11G, but I’m having an issue I’ve never had before. My DEC axis is stalling. The scope is balanced (RC10) and has been used on that mount for years. What is very odd is that if I plug in the DEC motor to the RA output on the Gemini 2 it has no issue moving the mount in DEC. At first I thought was then just a cable swap issue. Unfortunately if I only swap the cables and don’t cross the DEC/RA outputs from the Gemini 2 I get the DEC stall error. I’m using the power cable I’ve always used (supplied by Losmandy). I also did replace the battery in the Gemini 2 since I remember when that gets low voltage things get… weird. That didn’t seem to have any effect. I did take the DEC gear cover off (exposing the two gears) and it’s very easy to spin those and spin the mount in DEC. Thank you!
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