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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:
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.
since i started work on my observatory there hasn't been much time for AP, but since lunar photography is done in minutes i had a go yesterday.
SW AZGTI with the Skymax127 and Sony A6300 and Baader Neodymium Moon & skyglow filter.
100 frames taken and 50% used to stack in autostackerd.
I have been using my Skywatcher 8” Dobsonian for some time now, and decided I wanted a good refractor with an EQ mount as my next scope. I chose the Skywatcher Evostar Pro 80mm with an LX70 EQ5 mount. This seems to be a great scope to compliment my Dob, but I'm still getting used to the EQ mount! Found some good Youtube videos and am hoping for a clear night soon to really give it a workout! Any advice is appreciated!
I received the new ADM saddle for my AZ GTi this morning (direct from ADM). I have now fitted it to my AZ GTi mount and my Borg 107FL is now a million times more secure than it was before - its a great upgrade!
Here are the parts received from ADM... The new saddle is longer and chunkier than the feeble standard offering.
Here is the AZ GTi mount before I start the upgrade..
Remove the centre circular cover which is stuck on with a sticky pad underneath. I used a small flat head screwdriver to lift the edge of the tin cover then pulled it off with some pliers (there are the remains of the sticky pad underneath to be cleaned off afterwards)....
Remove the 4 black screws and then the standard saddle pulls off...
Re-use the four screws to secure the ADM adapter plate to the mount...
Use the supplied 2x 1/4×20 SHCS screws to secure the ADM dual dovetail saddle to the ADM adapter plate... (You will need an imperial Allen key)
Test it out with the Borg 107FL...
The leftover standard parts...
This looks a great upgrade, my scope's ADM dovetail fits very securely into the ADM dual saddle and my peace of mind is restored!
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?