Check it out! I can form a full sentence! Scopes: Explore Scientific 152mm f/8 Carbon Fiber Triplet, Obsession 15" Classic Camera: SBIG ST-8300M, SBIG FW8 Filter Wheel, Astrodon LRGB and 3nm Narrowband Filters Mount: AP900 Hang out with us at Mount Lemmon Sky Center
Quote:I did only do this once though so maybe I should have repeated the procedure a few times?Was curious why the red line seemed to drift down though even when guiding was turned ON...surely it should correct for any drift either way.
Quote:Hi All ..however no matter what settings in 'the brain' of PHD I tried I couldn't get the red alt line to stay near centre.SO tonight I did the full polar alignment routine with PHD ...even though I thought I was pretty well polar aligned by the drift method done a long time ago.So I did the whole routine and got the red dy line with alt guiding off to stay really steady at the center ..did everything by the book and adjusted all the right knobs with the scope in all the right positions.So it is now 100% perfectly polar aligned.But still when guiding the red alt line doesn't stay central but drifts slowly down ...it doesn't matter whether alt guiding is set to auto, north or south (I realise that now its perfectly polar aligned I shouldn't need alt guiding at all but surely with it on I shouldn't get downward movement )i have tried messing with loads of setting on the fly but cant seem to get anything smooth.I don't seem to remember having this problem years ago when I first started using PHD so am wondering about downloading an earlier version of it.Am begining to tear my hair out ...been 4 hours tonight and got nowhere Any ideas?Tom
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Quote:That graph almost makes me cringe. Although yes I drift align now but you shouldn't have a dec line getting away from you that fast if your polar alignment is good. The star drifted 4 pixels over a 50 second window.What i don't get about that graph is the jump in the middle. Was that the mount responding to the guide command?Also, off axis guider or guide scope? I can see that this would be fine in an OAG. In a guide scope of 1000mm f/l or less that drift limits you to a 5 minute exposure or less.
Quote:pfile: there is no 1x setting just .3 then .5 then 2x and so on as above which is curious as I suppose it must guide at 1x but there is definately no 1x shown on the settings box Greg:1)Yes I turned dec guiding back on2)resist switching is on (have never tried the lowpass filter setting)3) I didn't recalibrate after as I was on the same star and hadn't moved to a new sky area. 4) just carried on in PHD not5 sure what you mean by re start ...just kept it running but clicked on a off the guide star and started afresh a few times without rebooting PHD.5) it is balanced well in dec and and RA ...if any bias it is a very little keeping load on the gears.6) the load is at the top of the G11's limit...I have weighed it and it is just within the limits of the mount...the settings have varied alot as I have tried various ones but as I remember the defaults seemed fine a while ago.I only got about 10 mins tonight before I gave up with the cloud but dec tracking did seem to be a bit better....hard to be conclusive though as it went total cloud so gave up and came in...off to bed now will try again tomorrow weather permiting.Much appreciate all the replies and help.....won't let it beat me Tom
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Quote:I have had a few issues with PHD and using Lodestar or a Orion SSAG. In both cases where it would not work or loose guide stars all the time it was the ASCOM FUBAR. I took ASCOM out then installed it then it worked fine. For some reason my Vista Home laptop screws up ASCOM and it requires a uninstall and reinstall every so often. It had nothing to do with the camera or the PHD program is was ALWAYS the ASCOM gone FUBAR.William
Quote:Hi DwightNot tried since my last post...no clear sky...I havn't even heard of an oldham coupler (I don't live too far from Oldham here in the UK though:))I have checked all mounts etc on the worm and all seem solid etc.It is the original stainless steel worm though....I beleive the Losmandy upgrade was a brass coloured one...then of course there is the O-vision worm but it's too expensive for me.Guided ok in the past anyway with this worm.Will try again now all balance is done on next clear night I am at home.Keep us updated how you go on.Tom
Quote:Congrats on the wedding Dwight hope all went well Tom
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