NGC_Mike

Good spot - I did see that in my settings but it was greyed out at the time, and I have no clue how to fix it. It may have been un-editable at the time as PHD2 was actually guiding, so I'll have play beforehand. The guide-scope is a svbony 30mm F4, so 120mm FL.

Thank you for this detailed dive into my PHD log - very much appreciated. I'll have to go through point by point the next time I have everything on again. I have 3 young kids and 2 jobs and amount of time I can allocate to AP is extremely limited, but I get out as much as I can... I was using PHD to guide my old lager setup, which was a 6-inch newt on a HEQ5, so some of my old calibration data might still be lurking about in the settings. I thought shift-click on the guide button would re-calibrate, but I've clearly not thought this through too much. Do I need to save after re-calibrating or does PHD2 do it for you? I'll check out what my pulse guiding settings are on EQMOD - I suspect they are the same as I was using on the HEQ5. I know my DSLR pixel size is 4.3, which is way too big for the Evoguide ED50, but it's what I have for now until I can get a dedicated astro cam like the 183MC. When you mention to adjust the backlash (16.5 seconds) - is that something I should do in PHD2? Not sure what you mean re PAE, though I'll do some research as my knowledge is pretty lacking. I'm getting the inkling that the AZ-GTI doesn't do DEC dithering very well and my try without. Thanks again for your help.

I just did the one dither at around 21:28.

Hi Michael, I appreciate you looking at this. Log attached from last night's session. PHD2_GuideLog_2021-12-15_204706.txt

Thanks all, I'm imaging again tonight and tried dithering again but the same problem occurred - I've attached a screen shot of PHD during a dithering. PHD2 was happily guiding at 0.7-0.8 arc seconds then went off the chart as expected during a dither, but didn't settle back down again.

I recently purchased an AZ-GTI mount and star adventurer EQ base for lightweight, portable and cheap astrophotography. I’m using a SW Evoguide ED50, Starizona flattener and DSLR. I’m using this with an EQMOD cable and have the EQ firmware installed. It works perfectly and able to achieve 2 and 3 minute subs with sub arc second guiding. The only issue I have is that my guiding goes wrong when I attempt to dither. I have the dither set up in NINA and after it performs the dither, either the RA or DEC or both starts climbing away from zero as if they get stuck. If I don’t dither the guiding is fine and just sticks at around 1 arc second I’m wondering if there is a trick I’m missing in my eqmod settings or in PHD2?