My 2020 year and some recent pictures
I know, there are some great astrophotographers among us, but I would like to present my photos too. I dont't have a dedicated astro camera. I use Canon for DS photography and ASI or Celestron non
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Sebastian Kotulski
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#70557
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New tripod for my Losmandy GM8 mount - this is how I did it :)
I never liked my field tripod too much. GM8 with those thin legs? standing next to my old Celestron CG5 mount with its robust tripod look weird. Because Losmandy HD tripod is to expensive, I decided
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Sebastian Kotulski
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#70556
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Re: Weird tapping noise from RA gearbox or motor. Please, watch a movie.
Than you guys for your help. I'm going to? solve this issue this weekend. I believe your tips will help. Seb
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Sebastian Kotulski
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#70555
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Re: Is this typical guiding performance for an older g8? RMS around.25 px , 1.0 to 1.6 arc seconds
Err... Gilbert (where did I imagine it was Robert?)... [email protected]> wrote:
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Michael Herman
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#70554
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Re: Is this typical guiding performance for an older g8? RMS around.25 px , 1.0 to 1.6 arc seconds
Hi Robert, My GM8 had a loose DEC saddle dovetail. I discovered the 2 top mounting bolts were slightly too long...the dovetail was slightly loose. My solution was to file off the 1/4-20 bolt ends so
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Michael Herman
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#70553
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Re: Is this typical guiding performance for an older g8? RMS around.25 px , 1.0 to 1.6 arc seconds
I should add I use a 50 mm guide scope (focal length 207 mm) and I usually get PHD2 DEC backlash estimates of between 0.8 and 2 seconds. Mine is also a 492 system guided by ST4.
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Ian Taylor
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#70552
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Re: CG11 question
Michael, What is the principal differences between PemPro and PECPre? The last is free, the first is not cheap. Does the upgrading Tucked Motors any impact on the GoTo or tracking precisi¨®n, or is
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Luis Barneo
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#70551
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Re: Is this typical guiding performance for an older g8? RMS around.25 px , 1.0 to 1.6 arc seconds
I¡¯ve been using PHD2 for the last 3 or 4 months. The best guiding I¡¯ve had is 0.8¡± RMS (about 0.7¡± RA and 0.5¡± DEC) but I¡¯ve also seen it go as high as 1.5¡±. It is very dependent on
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Ian Taylor
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#70550
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Is this typical guiding performance for an older g8? RMS around.25 px , 1.0 to 1.6 arc seconds
Stuck at home, I decided to learn more about phd2, and try to tweak my mount.? ?All my efforts did not seem to have much of an effect.? ?I generally achieve RMS of about? .25px ,? and about 1.0"
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McFarlane, Gilbert
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#70549
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Re: Used GM-8 Guiding Help
When neutrally balanced it's high up, like an inch from the top, then my east bias I would move it down maybe 1/4" (when weight was on east). I'll definitely try out moving down at least an inch next
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Nick
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#70548
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Re: Used GM-8 Guiding Help
Is your 7lb weight at the end of the CW Shaft, in the middle, or up close to the scope?? Either way, for that setup, I would move it an inch if only for testing purposes.. Derek _____ Sent: Wednesday,
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Derek C Breit
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#70547
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Re: Used GM-8 Guiding Help
Now that's a sight hah! I think I'm going to move forward with cleaning the mount again now that I'm much more familiar with all the parts. I do think a larger east (or west, I've seen Rainer vouch it
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Nick
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#70546
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Re: Used GM-8 Guiding Help
I will try a larger east bias, does anyone have a way to quantify this? *** I know of two ways.. My way is to balance my roughly 25# load to "balance".. Then I move the weights - with the CW shaft
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Derek C Breit
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#70545
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Re: Used GM-8 Guiding Help
Nick, I recently tied a 7 lbs cast iron pulley to a heavy clothesline cord and wrapped the cord around my RA axis so the weight hangs to the East. See pictures. That, and backing off my RA worm
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Michael Herman
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#70544
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Re: CG11 question
Hi Michael, this is a pre-OPW mount. Any chance you can pass along your number? I'm on the east coast and can give you a call. It would be easier to explain the issue that way.
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wa1vta01452 <loeblt@...>
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#70543
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Re: CG11 question
I have that mount and successfully upgraded it. I used the original long OPW (no longer in production), replaced the old steel worm on RA with a new brass one, added an R4 Belleville spring washer to
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Michael Herman
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#70542
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CG11 question
I have some very specific questions for someone familiar with the early G11/CG11 mounts? DEC axis assembly.? Anyone out there before I continue with the details? Thanks Tom
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wa1vta01452 <loeblt@...>
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#70541
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Re: Used GM-8 Guiding Help
Thank you all, I was able to update the firmware and reinstall drivers for the asi120mm. I also ordered a new cable as it seems to be a common problem. Last night I was able to connect the camera and
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Nick
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#70540
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Re: Used GM-8 Guiding Help
Nick, I have seen the same trouble with the same ASI120 USB2 camera. It is not the mount, only the camera. I think the problem is with the driver. Look on the ZWO website for a new Win10 driver. It
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Michael Herman
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#70539
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Re: Used GM-8 Guiding Help
Nick.. You wrote.. I know the mount isnt perfect but seems like PHD2 should be able to guide it a little better, something just isnt clicking *** And Brian wrote (and I've stopped looking past the
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Derek C Breit
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#70538
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