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Latest Losmandy g11g Guiding Performance?

Mount Imaging
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#1 wen_astroevo

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Posted 25 October 2021 - 02:10 PM

Hello,

 

Not trying to raise a lot of debates here, just wondering if someone could share their experience with the latest Losmandy g11g with guiding. I thought the new one piece worm gear and spring load eliminate the backlash (and other) potential issues, but I still find posts about the "76 second RA error" of g11g while searching around here and groups.io. Is this still a potential pain with the latest Losmandy mount? If so, will the Belleville washer alleviate the problem?

 

My goal is to take long exposure (5 minutes) images with 8'' SCT + 0.63x reducer with OAG + ASI174MM mini guiding. I guess severe 76 second RA error that can't be dealt with using PEMpro may be an issue at 1280mm focal length.

 

Thank you and clear skies!

Wen



#2 Jim Waters

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Posted 25 October 2021 - 02:21 PM

Have you posted here?
https://groups.io/g/...dy_users/topics



#3 SilverLitz

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Posted 25 October 2021 - 03:29 PM

Using PHD2 Multi-Star and OAG, my ES G11 (PMC-8) has guided ~0.4-0.5", and I have used exposures as long as 8 min.  Previously, using PHD2 single star and 60mm guidescope, 0.7" was my best, with 0.9-1.1" being typical.

 

The ES G11 (PMC-8) does not have the normal gear box, but instead is direct coupled to stepper motors.



#4 wen_astroevo

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Posted 25 October 2021 - 10:11 PM

Hi Jim,

 

Thank you for your suggestion. I've looked through some groups.io posts regarding this, but have been quite confused by different opinions about the new g11g guiding performance. I might post the same question there as well.

 

Best,

Wen



#5 wen_astroevo

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Posted 25 October 2021 - 10:13 PM

Using PHD2 Multi-Star and OAG, my ES G11 (PMC-8) has guided ~0.4-0.5", and I have used exposures as long as 8 min.  Previously, using PHD2 single star and 60mm guidescope, 0.7" was my best, with 0.9-1.1" being typical.

 

The ES G11 (PMC-8) does not have the normal gear box, but instead is direct coupled to stepper motors.

Hi Mark,

 

Thank you for sharing your experience! The guiding performance you have with multi-star sounds superior! I hope the spring load worm gear has similar performance.

 

Best,

Wen




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