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Can you help solve this mystery, please? Star Sense camera will not hold calibration with OTA after mount is rebooted.By StarGazingSiouxsie
Can you help me solve this mystery, please?
I have a 2020 Celestron 8" Edge Evolution Ltd Edition 60 Anniversary model. The OTA is carbon fibre and some of the artwork is different but for in tents & purposes it's a standard 8" Edge Evolution
The problem is, when the mount is switched off. the telescope will not maintain its calibration between Star Sense (SS) camera and the OTA. Please not I am not talking a SS alignment here - I'm talking about the calibration between the SS camera and OTA.
This is what happens - I will do a SS Auto Alignment and the goto will be out by some margin IE. way outside of a 25mm eyepiece. So, I then calibrate the SS camera to the OTA, re-align, and everything is working perfectly. The goto is more or less in the middle of a 12mm eyepiece. Next time I reboot the mount, I do my SS Auto alignment and the goto is way off again and I have re calibrate the SS camera to the OTA. Once I do that, everything works fine again. And so the cycle continues.
Have you experienced this problem yourself or do you have an idea of what may be happening? Before you offer your suggestions, please read this list as what I have done to try and solve this issue:
1. The tripod and OTA are absolutely level before booting up the mount.
2. Once I have booted up the mount, I enter time and my location, using GPS co-ordinates. I am extremely precise about this and am entering the correct time (and daylight saving as needed) to within 2 seconds. The GPS co-ordinates of my location as absolutely spot on as well - they are the same co-ordinates I use for all my telescopes and they are working perfectly. So this is defs not a time, date or location issue.
3. The SS camera is mounted perfectly It does not move at all. I have the calibration problem even after rebooting without moving the telescope's position at all.
4. I have even tried a new SS camera and handset. Exactly the same issue persists.
5. The handcontroller, mount and camera have all the latest updates.
6. The battery is working fine and holding it's charge perfectly.
As I mentioned earlier, once the SS camera is re calibrated, everything works fine and the goto is accurate. The problem only arises after rebooting the mount.
Any ideas, suggestions or sharing of similar experiences gladly welcomed, thank you.
It's definitely me and not the equipment but I need guidance, if you excuse the pun!
I have a Celestron AVX mount with a 9.25 SCT sitting on top of a pier. Previously I have had issues with aligning my scope to the point where I used to point it manually not use the goto functionality. However after moving I decided to make my life easier so I bought the Celestron Starsense however I'm just not getting it. I've followed the instructions word for word, first calibrating and then aligning.
One of the issues I have is when I choose a star to centre, the scope doesn't put the star in the 35mm eyepiece but I centre it anyway and press enter but the scope pans away from the star again back to where it was pointing before I centered it!
I have researched possibilities but cannot understand the problem. I am definitely putting the correct coordinates and time in. I pretty sure I don't need to set up the mount with its location and time as I did before I got the starsense?
Please can I have a step by step process after turning it all on as I'm falling down a rabbit hole of Sharpcap and Platesolve2 and apart from frying my my brain with software downloads etc, I shouldn't have to go to such lengths.
I know my set up should be relatively easy to set up, GOTO reasonably accurately and then track sufficiently for visual observing but I'm having a stress over what sounds like it should be easyish.
As much advice would be grateful appreciated.
Q. When using Star Sense, why does my telescope go all around the houses on some of its GOTOs? I'm sure I set 'Cordwrap' to 'OFF'??!! A. Because Star Sense reset it to 'On' after you did your alignment.By StarGazingSiouxsie
Now, I know that Cubble likes to keep fit. I try to keep all of my telescopes healthy and feed them only the best planets and DSOs.
But - why is that Cubble just LOVES to go all around the houses on some of his GOTOs?! Talk about taking the long way home!!! I could have sworn that I had 'Cordwrap' set to 'Off'.............
I have set Cubs up with a totally cordfree / wire free system and therefore find this going 340 degrees around to an object that is 10 degrees away incredibly annoying and time wasting.
Well, I think I may have found the answer today. Some of you may already know this but for those that don't, I hope it helps relieve some of your frustration.
What I disovered is that the Star Sense hand controller resets the Cordwrap setting (MENU>>>TELESCOPE>>>CORDWRAP) back to 'ON' each time a new alignment is completed. So, one can spend time seemingly making sure that it is set to 'OFF' (if that's the setting you want, of course) only to find that once you have completed an alignment, the hand controller defaults the Cordwrap setting back to 'ON'.
So, if you don't want or need Cordwrap set to 'ON', make sure you change the setting after completing each new alignment.
I have a couple of StarSense related questions please.
1. So this would be a new calibration point between the camera & OTA, not a new or additional alignement reference.
The reason I ask is because I'm wondering if doing a new calibration now and again might sharpen or help the accuracy of the GOTOs?? I'm not sure how accurate my initial calibration was, but in any case I'm the type who likes to continually make my set ups are as sharp as they can be.
Regardless of why I want to do it, If it were possible, then maybe I could go to the StarSense menu and follow the calibration proceedure that I did when I initially calibrated the camera / OTA (the one you have to do when you first use SS and then another Auto Align is required after) ??
2. I added a load of additional alignment points. If I wanted to scrub those (because StarSense stores them - right??) and add new / updated ones is there a way of clearing out the stored additional alignment reference points?
Any help, insights, tips, advice or ideas all very gratefully received, thank you.
AVX mount and tripod, with upgraded azimuth knobs (rose knob- ADM ones). I had also replaced the altitude knob as the long cylindrical one gets in the eye while you are looking through the polar scope. It is a rose knob so very easy to turn. The plastic box in front has red tape on it as the casing had come off, not broken and I was not able to put it back properly. Its in there partly fitted partly held by the tape but never bothered in the operation. I can also include polemaster adapter for it in case you want to buy that in future. Will also include the cable for connection to the computer.
£550.. collection from Tower hamlets, London due to the weight.
Telescopes/cameras/polemaster not included.