Dobsonian mount play?
- Larry 1969
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Re: Dobsonian mount play?
What size did you get? I was looking at the 12 3/4" for $30.
I've decided to disassemble the mount. Clean everything up and try to eliminate the 3 degrees of lash first.
If I don't get decent results I may go ahead with the bearing modification.
Larry
10" Skywatcher collapsible goto dob, various EP's and a Celestron StarSense auto align.
For imaging:
Orion 8" astrograph 800mm @ F3.9
Eq6-R Pro controlled by APT via EQmod with an OTA mounted mini PC
Tele Vue Paracorr Type 2 coma corrector
Altair Hypercam 26C
- Larry 1969
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TSS Photo of the Day
Re: Dobsonian mount play?
I was thinking while I have it all apart maybe some graphite might help before I jump into the bearing mod?
Thanks!
Larry
10" Skywatcher collapsible goto dob, various EP's and a Celestron StarSense auto align.
For imaging:
Orion 8" astrograph 800mm @ F3.9
Eq6-R Pro controlled by APT via EQmod with an OTA mounted mini PC
Tele Vue Paracorr Type 2 coma corrector
Altair Hypercam 26C
- man1
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Re: Dobsonian mount play?
What size did you get? I was looking at the 12 3/4" for $30.
I've decided to disassemble the mount. Clean everything up and try to eliminate the 3 degrees of lash first.
If I don't get decent results I may go ahead with the bearing modification.
-------------------------
I got the 12 3/4" version, this is truly a great product. The height of this unit is 17.2mm. I am lucky we have a local Lee Valley store here in Ottawa Canada, and I checked for the play and the quality of the unit before I purchased it. No play at all, excellent bearing. I didn't receive my scope yet (next Friday... it left Orion's in
I am doing this since many people complain about the stickiness of the teflon pads. To eliminate even further I will make my own motor drive. I am not doing any photography, but I want things to operate as smooth as possible. I will use a T7C camera looking through the focuser to my laptop.
Cheers, man1
SkySafari6 Pro & 7 Pro, SkyFi 3, ASI290MC, T7C
- man1
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Re: Dobsonian mount play?
Hope that helps...
Cheers. man1
SkySafari6 Pro & 7 Pro, SkyFi 3, ASI290MC, T7C
- Larry 1969
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TSS Photo of the Day
Re: Dobsonian mount play?
I disassembled my base this morning and found the broken bits of the RF suppressor inside. I don't think it was causing any problem but I removed them.
I then found my base is already equipped with a bearing. It looks as though a good cleaning and lubrication is in order and I will try to eliminate the lash.
Larry
10" Skywatcher collapsible goto dob, various EP's and a Celestron StarSense auto align.
For imaging:
Orion 8" astrograph 800mm @ F3.9
Eq6-R Pro controlled by APT via EQmod with an OTA mounted mini PC
Tele Vue Paracorr Type 2 coma corrector
Altair Hypercam 26C
- Larry 1969
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TSS Photo of the Day
Re: Dobsonian mount play?
https://stargazerslounge.com/uploads/mo ... 837221.jpg
Larry
10" Skywatcher collapsible goto dob, various EP's and a Celestron StarSense auto align.
For imaging:
Orion 8" astrograph 800mm @ F3.9
Eq6-R Pro controlled by APT via EQmod with an OTA mounted mini PC
Tele Vue Paracorr Type 2 coma corrector
Altair Hypercam 26C
- Larry 1969
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- Posts: 1481
- Joined: Fri May 17, 2019 12:33 am
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TSS Photo of the Day
Re: Dobsonian mount play?
My AZ bearing is a plastic disc with steel rollers evenly spaced. This disc is sandwiched between 2 metal discs.
It appears this scope was dropped or something because the metal discs have dents in them from the rollers!
This can be felt and the pictures don't really illustrate how severe it it...... The center image is of the bearing side.
The other two are the sides of the metal discs opposite the bearing!
Larry
10" Skywatcher collapsible goto dob, various EP's and a Celestron StarSense auto align.
For imaging:
Orion 8" astrograph 800mm @ F3.9
Eq6-R Pro controlled by APT via EQmod with an OTA mounted mini PC
Tele Vue Paracorr Type 2 coma corrector
Altair Hypercam 26C
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