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Hi All I Purchased from AliExpress a On-step V4 Pro go-to kit for an EQ5 Mount about 5+years old this is the older style without the green trim. On Mounting the RA motor the bottom end of the bracket is lifting up once the bolt has been tightened, this is loosening the drive belt if I move the motor back there is not enough adjust to retighten the belt. looking at the bracket the mounting hole is to one side and this makes the bracket not sitting straight on the mount, this makes the bracket tighten down into fresh air. Has anybody else had this problem and what was your fix? My suggested fix is to get some thinnish ally sheet to sit across the mount given a flat stable surface see photos.
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Hi there, I recently got a long Mak OTA and an EQ5 Pro and shortly thereafter got myself an ASIair Plus, asi120mm-mini and a 30f4 miniscope bundle as an upgrade. Long story short I'm not sure where to poke at this issue, but my guiding doesn't work. Here is my workflow: Set up the tripod and mount Perform PA through the mount's eyepiece Set up and balance the OTA with the ASIAir and the guide scope Power up the ASIAir from a AC power supply (the ASIAir powers the mount (12V barrel jack) and the guide camera (USB)); The comms between the ASIAir and the mount is through an USB2.0 A-B cable to the mount controller directly and it connects fine at baud 115200; Move the OTA to point at some bright star (ideally Polaris) and swap eyepiece with the DSLR Focus the OTA in preview with a bahtinov mask to ensure accurate plate solving Perform PA through the app (within 5") Choose a target and go to it. Here the first issue becomes evident - the mount goes to the desired DE/RA but then during the center confirmation it starts doing fine adjustments and usually slews continuously to the target over, and over, and over until it eventually fails, though sometimes it confirms the target had been centered so this is more of an intermittent issue. Go into guiding, loop, select star (if needed) and calibrate (delete older calibration data if needed). Here the second issue becomes apparent - even though ASIAir claims to be guiding, the mount doesn't move (I get star trails on exposure longer than a few seconds and the distance just grows and grows) s. video below. Video on Streamable (valid for 48hrs) Then confirm everything works again in Preview and go into Autorun where I set my lights, darks, flats, etc. And after the first image I see the star trails. Theories: When I first got the setup the RA motor wasn't always moving the mount and had the seller mesh the gears better, so my first thought was that the mount might be still at fault (haven't refuted that yet). My second theory is that ASIAir doesn't talk well to the EQ5Pro over USB (as I know there's some driver issues with some of the SkyWatcher mounts). However, had that been the case I assume the GoTo wouldn't have worked either, not only the guiding. I'd like someone to confirm or deny that assumption before I spend 50 quid on a EQDir cable. I suppose I could try using ST4 (if the mount is compatible and I figure out whether I need to set anything up in ASIAir or the mount, that is..) My third and last theory is that this could be because of the focal length of my OTA (1800mm) and that the rotation of the planet is just too significant at this magnification that by the time the camera (Nikon D500 whilst waiting on my OSC to arrive) takes a 1s exposure, ASIAir plate solves and confirms orientation the target had moved away, but I later refuted this theory when I took my Sigma 150-600/5-6.3 Sport set it @400mm on a vixen dovetail and got an L-bracket for the guide scope and attached it onto the body and that rendered the same result, so the length of the OTA shouldn't be the issue here. Any suggestions and wisdom would be appreciated. Cheers, V
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I'm building an onstep and I have all the parts, but the rod to which I mount the 60t to is too short, is there a way I can make it extrude more to fit the 60t? Pictures for reference: p
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I have broken Synscan HandContoller.I Use SkyWatcher EQ5GOTO. Inside handContoller ,Model "CELESTRON NXW215 REV.G" is printed on board. I found broken parts printed "C3" on board. What is this parts? I guess Same Parts "C4"(104C 23LN5)... Anyone have this board's photo? or Anyone knows what "C3"Parts is? Please Help.
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Imaging M57 last night, I noticed some frames looked to have started nicely tracked then the stars and nebula all streak off in the same direction. It seems the locking nut between the RA drive shaft and the slow motion knob loosens after a bit. bit of a pain to have to keep an eye on that as well, but also because otherwise I was getting 1 min subs unguided! any ideas?
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Hello everyone. I have this tripod https://www.bresser.de/en/Astronomy/Accessories/Mounts/BRESSER-Messier-EXOS-2-EQ-GoTo-Mount.html , it’s been working just fine, but I’d like it to make it work for longer exposures. I mounted the Svbony 80ed telescope on it. Now, as far as autoguide, I am a total noob. I know, I need a guide scope with a guide camera. But I’d like it to work as painlessly as possible for me to make effort in learning new skills in astrophotography without being frustrated in buying stuff I don’t know. The mount features ST-4 compatible autoguiding input. If there is someone so kind to suggest what to buy and what software I’ll need to get and learn. I’ll be happy to answer any questions. I hope, my inquiry is not too bold.
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I’m about to do the handset mod on the EQ5 controller - I’m intending to run the connection into the Pi’s GPIO port via optocouplers. Anyone got any idea where to start getting phd2 to talk to things? Is there an API? I can’t seem to find an awful lot, it seems to assume I’m going to use an EQMOD and USB to Serial, etc.
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Hi, Just got a s/h EQ5 go-to mount and am trying to align the polar scope. The guy I bought it from used a Pole Master camera for polar alignment and I thing he had removed the polar scope to use that. The problem I am having, apart from having no manuals and being unable to find any online, is the target in is not in 'clock' position, i.e. 0 at the top 6 at the bottom, when the mount is in 'home' position, and therefore I can't see how I can polar align, and I not can't see a way to adjust it to what I think is the correct position. Also the green 24 hour clock ring is very loose even though the polar scope is fully screwed in, is there something missing from the slot underneath, ( please see photos attached)? I can understand adjusting the three screws to center the polar scope in the mount and I think I can work out actual polar alignment, there are enough videos on line for that but this has me stumped. Any advice would be greatly appreciated. Thanks
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Hi Guys, Wim has wisely persuaded me to go for an eqdir cable from my RPi to my SynScan controller. I currently have a usb:db9 + db9:st4 setup to the SynScan handset (ie 3 cables connected). Can I just change the db9 to st4 to a db9:Rj45 or similar? Eg: https://www.ebay.co.uk/itm/201608325158 Plus an old ethernet cable? Ie does the pinout of an ethernet cable correspond to the pinout of the SynScan controller handset socket? Regards Steve.
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My 200P just arrived and oh my God... I have been trying to wrap my head around the mount for 4 hours. The manual didn't really help so I decided to go on youtube, but again, I didn't find any good and detailed videos so I decided to ask here if there is any video or perhaps blog post that might help me set up the mount. Thank you very much! *by the way, is the EQ5 supposed to have slow motion cables? I only got 2 knobs (not cables) and I'm not sure if there is something missing or not... sorry, this is the first time I've used a serious equatorial mount or telescope. Thank you very much!
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Hi People, I have quite severe backlash, such that guiding assistant just gives up. It seems to be about 11 secs in total, the one time GA came back with anything, but it's about 3-4 secs if I measure it by hand. Here's some guiding. Actually, it's worse when I'm dithering. So, I tried measuring the backlash with by counting and it's about 3-4 secs. If I used PHD2 guiding assistant, mostly it fails, or it comes back with a very big number, like 11,350 msecs. I tried entering this: But then I got a see-saw mechanism, even when I dropped 8,000 to 3,000 it was the same. I've taken the motor off just now and looked at the grub/hex-screw mechanisms. One hex-screw was loose, so I tightened it to hand tight and let the grub-screw off an eighth of a turn. I'll look again this evening. I ran a three hour sequence of exposures on NGC6888 (with dither) and this is what I got on EVERY image. Amazingly, they stacked nicely. So last night I ran without dither and it was mostly OK. What I want is full dither, but to do that I need to deal with the backlash. Here's a photo of the motor and gears, most of the backlash seems to come from the top gear (ie the 12-tooth gear and its neighbour). I guess the rest comes from the worm-gear: Does anyone have any suggestions? There doesn't seem to be a belt-mod for the EQ5 as far as I can see. Maybe there are better Dec backlash compensation settings I could use. Thanks, Steve.
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Hi, Sorry if this has already been asked ( I think it would have been, there are posts similar but can't see the the answer I'm looking for) I have a celestron C8-N scope that came with a Cg5 mount, it's at least 10 years old and although it had a lot of use to start with it's been gathering dust the last few years. So I would like to fit a motorised goto mount to it and was considering a synscan pro3 for an Eq5 mount. Can someone tell me are these 2 mounts the same and if so will the synscan be OK for my Cg5 mount. If not are there any others I should look at? Thanks
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synscan problem Synscan EQ5 Both axes no response
Carboncrazy posted a topic in Discussions - Mounts
Can anyone help? I'm pretty much a novice at this astronomy stuff but loving the steep learning curve. I started by using camera lenses modified to use an eyepiece but after much debate, deliberation and saving up, I have finally bought my first proper telescope. Unfortunately I now have a problem. Last year I bought a second hand Synscan EQ5 mount which has worked perfectly each time I have used it. I used it about a month ago for the first time with the new scope (last time we had a clear sky). Everything worked as it should. At 2 am I parked the scope, dismantled everything and put it away. Nothing was dropped, snagged or got wet. The forecast said we might get a clear sky last night. Anticipating this I got the mount on the bench, stripped, cleaned, polished and greased the DEC axis plain bearings (hoping this might help with guiding). When finished I connected the motor controller and handset and switched on. I was greeted with the following messages: INITIALISING then CAUTION BOTH AXES NO RESPONSE. If I press enter and carry on through the menus, then everything appears to be as it should except no motors run. I have tried everything I can think of and would be very grateful of advise or suggestions. These are things I have tried, so far: Factory reset Different power supply. I have been using a motorbike battery which is giving 13.5V constantly when I switch on. I have tried two other batteries with a 2A charger connected. Continuity tested the cables from the plugs that go onto the motherboard of the controller all the way to the motors. I made up the RJ45 and RJ12 diagnostic cables suggested in the manual and the handset appears to be ok. Removed the motors from the mount to make sure that they turn freely. Replaced the RJ45 cable from the handset to the controller. Examined the motherboard for dry joints and damaged components. Assembled everything in the tripod to make sure that the earthing tab on the controller made no difference. I now feel that the problem is the controller motherboard but logic tells me that it was the mount I disassembled, so the fault should lie there. Is there anyone who has had the same problem or who has the same system that could help me diagnose the problem. I'm in North Shropshire but happy to travel to anyone who could help. Unfortunately I don't know anyone with the same mount. -
I have an EQ5 telescope mount which i use for astrophotography. I have modified it with a motorised RA axis using a bipolar stepper motor - my thread for the build is here . I want to expand the mount's tracking ability by motorising the DEC axis and using a guide scope/camera. I generally use the mount in fairly remote locations so would like to use a raspberry Pi for portability. I understand that I'll need to use a Raspberry Pi Camera Module for the guide camera. The capability I want is: 1. guide the mount along RA and DEC axes using a guide star as feedback 2. track the mount using the RA axis only, and if possible continuously take 20-30 second exposures on the guide camera (this functionality is optional, but would assist in polar alignment of the mount) I don't want any GOTO capability. I am very new to RPi and need some help: - do I need to write code for this, or is there existing programming available for what I want to do? - is it possible to avoid the use of screens (in the field)? My preferred option would be to flick a switch to start and stop the guiding, with another switch for alignment mode (or something simple like this). - do I need to use any particular stepper motors/drivers for raspberry Pi? I'm using a bipolar stepper motor running quarter steps, with an A4988 stepper driver - is the RPi 3 Model B+ the unit I should buy? Thanks
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From the album: The next step.
I like the flame nebula and the horsehead appearing was a bonus as well. approx 16 x 1min exposures canon 300D, 200p EQ5 - DSS.© Aenima
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From the album: The next step.
Part of the massive Cygnus loop the Eastern Veil Nebula, approx 25 x 40 - 60 seconds, unguided . 200p EQ5 300D. DSS© Aenima