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  1. I thought that I would provide an update to help anyone else stumbling across this post in future with a similar problem. Balance was clearly an issue. Having the scope fixed directly to the mount with the guidercam offset was clearly causing problems at certain positions. I fixed this by placing the scope in rings allowing me to rotate and keep the guidercam in line with the centre of gravity. I then dialled in anti backlash settings using the software handset (for reference I left RA at 0 and Dec at 9). In PHD I increased Dec duration to 300ms and reduced RA duration to 750ms. I now have an almost flat graph in PHD. The stars no longer start shifting out of view. I can take exposures in excess of 30mins each. Finally, I have one dedicated 88ah battery for mount power and use a second 17ah battery for the Camera and Dew controller. Returning to a faulty home position is no longer a problem. Thank you to all who replied. You gave me food for thought and inspiration to seek out the information I needed to lick the problem.
  2. I put the scope into tube rings and then attached it to the mount. This allowed me to position the finder cam so that it was directly above the mount when in its home position. This has allowed me to balance the scope in all axis :-) The proof will be tonight if the clouds move out as predicted. Still not sure about the issue with the scope not returning home when commanded but each step at a time.
  3. Possibly. I'll check that out. Thanks.
  4. I did wonder about a power issue insofar as the home position, but am using a fully charged 88Ah battery to power the mount so am a little puzzled as to why this would lead to a power dip.
  5. I suspect that the balance problem stems from the fact the the finder that I use as a guide cam is offset from the centre of the tube, because of the position compared to the dovetail i.e. It is not directly above it. I have a spare set of tube rings and am toying with the idea of using those to ensure the finder sits directly above the dovetail. Thoughts?
  6. Thank you for the replies. I've been out to check the balance again and made some adjustments. I take it is usual to have good balance on one side of the sky and then find that the balance is out when looking at the other side?
  7. And something else I've noticed also. If I try to use the handset to return the scope to its home position ( which is pre set with the hands software) after the problems, the scope sends itself to some obscure position.
  8. I'm guiding using a QHY5-II with 50mm finder. I have polar aligned my scope. I can guide quite happily for 5-10 minutes and then all of a sudden all the stars start shifting left at a rate of knots and PHD stops guiding. Does any one have any ideas before I kick the **** thing down the street :-(
  9. I've not had a problem so far. I find 1 second exposures work fine for me.
  10. Hi, I use a SPC900 with lx mod together with a 50mm finder through PHD and have no problems. Hope that helps
  11. Hi, There is an option in Sharpcap to increase the image size (it's near the option to use a reticle from memory). This only resizes the image for the purposes of focus. You can use a Barlow to increase the size or drizzle in Regisrax. I used to do 3 mins at a time. Hope that helps.
  12. I bought myself some black combat style trousers full of "man pockets" and they work a treat.
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