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Motorizing a Classic Telescope

equipment mount refractor
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#1 garedessary

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Posted 21 July 2019 - 06:49 PM

I have a Bausche and Lomb refractor AF-78-0454. Is it possible to motorize it?



#2 starman876

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Posted 21 July 2019 - 07:18 PM

I have a Bausche and Lomb refractor AF-78-0454. Is it possible to motorize it?

anything is possible as long as you have the right parts and tools.  Pictures would help.



#3 garedessary

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Posted 21 July 2019 - 08:21 PM

I suspect parts and tools might be available. How to install is another matter. I have images to share, but if there is a way to post them here, the procedure to do it is beyond what I've been able to find on this website. jpegs are not allowed.


Edited by garedessary, 21 July 2019 - 08:22 PM.


#4 Bomber Bob

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Posted 21 July 2019 - 08:30 PM

Welcome to The Classics!

 

If you'll save your JPEG files to JPG, then resize each one to < 500K, they'll meet the CN requirements.  Some Apple users have issues getting the image loaded with the correct side up, but at least they're loaded on the page.



#5 garedessary

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Posted 21 July 2019 - 08:50 PM

I got the 2 jpg's down to about 12 KB each, and the site still rejects them. I thought I was pretty well web savy, but this one is very user unfriendly.


Edited by garedessary, 21 July 2019 - 08:51 PM.


#6 MJB87

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Posted 21 July 2019 - 09:04 PM

if you can PM them to me I can see if I can post them for you.



#7 daltons

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Posted 21 July 2019 - 09:14 PM

Upload your images to a hosting site, like : imgur.com, get the link and paste in here

 

https://imgur.com/5NVlnO0


Edited by daltons, 21 July 2019 - 09:15 PM.


#8 rolo

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Posted 21 July 2019 - 09:38 PM

Like this one

 

https://www.cloudyni...gem-or-garbage/

 

 

if so, I would use it as. 



#9 DAVIDG

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Posted 22 July 2019 - 09:48 AM

I got the 2 jpg's down to about 12 KB each, and the site still rejects them. I thought I was pretty well web savy, but this one is very user unfriendly.

 Bring the images up in PAINT and use the resize function to take them down in size.  To post them use the 'More Reply Options' at the lower right corner of the reply window here at Cloudy Nights. After you hit that option  the Attach File Window will be at the bottom and you can select the file of the picture you wish to  upload and add to your reply.

 

               - Dave 



#10 garedessary

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Posted 22 July 2019 - 10:42 AM

Bausche and Lomb refractor

Attached Thumbnails

  • Telescope A.jpg
  • Telescope B.jpg


#11 DAVIDG

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Posted 22 July 2019 - 12:15 PM

 With the posted pictures we can see that there is  a silver gear attached to Right Ascension  (RA) worm. To  find the speed and additional  gears you need to know how many teeth are on the silver gear attached to RA worm and how many teeth are on the main drive gear that is behind RA setting circle. In the past others with similar mounts have found 150 teeth on the  silver gear and 144 teeth on RA gear. 

   If that is the  case then there are 1440 minutes in a solar day so if you have 144 teeth on the RA gear that mean that the worm that drive that gear needs to turn at 1/10 rpm ( 144/1440) to make the telescope turn  at 1 rev/ day.   If the silver gear has 150 teeth and you used a common 1 RPM motor, the motor would need a gear with 15 teeth attached to the output shaft.  The 15 tooth gear in combination with the 150 gear and the 1 rpm motor would result in a 10:1 reduction ( 150/15) so the shaft that the silver gear is attached to would rotated at the needed 1/10 rpm. 

 

          - Dave 


Edited by DAVIDG, 22 July 2019 - 12:17 PM.

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#12 rolo

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Posted 22 July 2019 - 12:58 PM

Bausche and Lomb refractor

Looks like an EQ1. There are DC drives available everywhere...$25-$50 depending how much you would like to spend. I had one on the same mount by Celestron.

Attached Thumbnails

  • C70.jpg


#13 starman876

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Posted 22 July 2019 - 01:02 PM

Looks like an EQ1. There are DC drives available everywhere...$25-$50 depending how much you would like to spend. I had one on the same mount by Celestron.

sure does look like an EQ1.  Good eye Rolowaytogo.gif



#14 garedessary

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Posted 22 July 2019 - 10:43 PM

Thanks to all. Keep the suggestions coming. I'm following up ASAP. It's a (yr 2000) retirement award that I want to soon gift to my preschool grandsons; great for Saturn's rings (for example), but catching and tracking without a motor takes patience not owned by the young (or me).


Edited by garedessary, 22 July 2019 - 10:52 PM.



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