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Peter, Have no Idea what the RA blips are, maybe the worm nick?? I'm thinking the DEC blips might be a bearing glitch like the RA's 76 second error. They seem to be evenly spaced. Will have to time

David, Buffing the worm sounds like an really interesting idea. Also, I've found that nicks are so easily created just installing the worm. Brass is so soft. I'm at about 0.65 arcsec without PEC. I

Nike, It's those transients (or just one) that I've found are the real problem with loosing what would be great frames shooting long exposures. I'm working hard to eliminate them with success! You

Sorry, the pics did not upload in order. RMS Error in Px .44"? jumped to .49" .41"? jumped to .52" Last picture guiding at .40" a goal I think is possible. Seeing was average, checked and I was just

I thought of the too! With a wider angle - that should be fine. Thanks

you can try goto bright star Antares or M4 globular cluster [email protected]> wrote: -- Brian Brian Valente portfolio brianvalentephotography.com <http://brianvalentephotography.com>

Well I have done a bit of tweaking myself and believe I'm almost there. I rebuilt my laptop from scratch so I didn't have time to fix a auto focus problem. So not in focus for last nights test. After

Does anyone know what would be?the selection in the Gemini II GoTo menus for the the center of Rho Ophiuchi complex? Would you advise just going to the RA and DEC coordinates? Thanks, Tom

On Fri, Jul 9, 2021 at 06:10 AM, Michael Herman wrote: > > Peter, > > You have initiated many good experiments that have not been described > earlier.? Like your alternative gearboxes over 50:1.? So

Also, usually I measure eccentricity on subs, but I just extracted a lightness of my 2x drizzled data that I ran background extraction on (the luminance portion as extracted by Pixinsight) and the

Thanks you both, Brian & John In my opinion, my images look amazing (for my level of experience at least - I am far from an expert here) My FWHM & Eccentricity are a bit higher than I'd like but I

Peter, You have initiated many good experiments that have not been described earlier. Like your alternative gearboxes over 50:1. So you are pioneering new ground. We all benefit from your research. If

Nick, Unlike David's issue, your 76 second error peak appears much smaller than the 240 second worm period error. Every G11 will have a 240 second error, as Michael said, but your 76 second peak is

Hi Nick images ? yes - look at your images. You can also do quantitative analysis such as FWHM and Eccentricity. Right now, you are guiding sub-arcsecond, which is a fraction of a pixel difference in

Hi Nick, Ha ha indeed (or was that H-alpha?!) Seattle not on my calendar anyway, but... if in California or Denver area of Colorado ....house calls may be possible....! Generally the worm period of

So if I somehow fix this with the same fix, what should I expect to see in PEC Prep ? That spike to disappear into the noise I suppose ? Do you ever stop by Seattle to visit ? haha I am likely to make

I do

Keith, I'm reluctant to disassemble at this point to figure that out. I too though that the 80s period might be from the gearbox. Both the 80:1 and 125:1 gearboxes do have the same gear size on the

Ray, super thanks!? I'll do as you say. Peter

Hi Nick, See my note to Peter (PCBoreland) about the pinched ball solution. You did the PECprep just fine and it did show the peak as a pinched RA bearing ball. Finding the cause is the majority of