Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

Can't figure out how to mount the ZWO EAF (auto focuser) to my telescope

  • Please log in to reply
8 replies to this topic

#1 The_8_Bit_Zombie

The_8_Bit_Zombie

    Vostok 1

  • -----
  • topic starter
  • Posts: 115
  • Joined: 29 Apr 2016
  • Loc: A pale blue dot

Posted 21 July 2019 - 11:49 PM

Hi everyone,

 

I just acquired a ZWO EAF auto focuser, and I can't figure out how to mount it to my telescope, the Stellarvue SV70T. The EAF requires a motor bracket to be attached to the telescope, which mounts like this: https://astronomy-im...ds/DSC_3655.jpg

 

However I cannot figure out where to attach the screws onto my telescope. As far as I can tell all of the available thread holes on the telescope are being used. The only two candidates that I see are these two:

 

2khfLHf.jpg

 

But I'm pretty sure those are the tension screws for the telescope's focuser. And the other holes look empty, but they all have screws in them.

 

Is there something I'm missing? It's worth noting that I emailed ZWO before I bought the EAF, and asked if it's compatible with the SV70T. They told me that it is compatible, even though it's not on the compatibility list.



#2 ZL4PLM

ZL4PLM

    Vendor - ZWO Product Dev Team Member

  • *****
  • Vendors
  • Posts: 1,376
  • Joined: 23 Apr 2017
  • Loc: Darfield, New Zealand

Posted 22 July 2019 - 01:57 AM

Here you go :) 

 

remove the middle screw on the left its just a cover 

 

cheers

 

Simon

 

SV70T & EAF

  • The_8_Bit_Zombie likes this

#3 The_8_Bit_Zombie

The_8_Bit_Zombie

    Vostok 1

  • -----
  • topic starter
  • Posts: 115
  • Joined: 29 Apr 2016
  • Loc: A pale blue dot

Posted 22 July 2019 - 04:57 AM

Here you go smile.gif

 

remove the middle screw on the left its just a cover 

 

cheers

 

Simon

 

Ah thank you so much! So to double check, these are the two screw holes I should use right?

 

gc7lFET.jpg

 

Is the one on the right safe to use?



#4 ZL4PLM

ZL4PLM

    Vendor - ZWO Product Dev Team Member

  • *****
  • Vendors
  • Posts: 1,376
  • Joined: 23 Apr 2017
  • Loc: Darfield, New Zealand

Posted 22 July 2019 - 03:47 PM

yup thats the ones :) 


  • The_8_Bit_Zombie likes this

#5 The_8_Bit_Zombie

The_8_Bit_Zombie

    Vostok 1

  • -----
  • topic starter
  • Posts: 115
  • Joined: 29 Apr 2016
  • Loc: A pale blue dot

Posted 27 July 2019 - 02:44 PM

yup thats the ones smile.gif

Thanks! I have one more question if that's okay. Should I screw the focus tightener back onto the OTA? (If I even can, not sure that it would fit)

 

hnwrtBA.jpg

 

(The one on the far right at the edge of the image)


Edited by The_8_Bit_Zombie, 27 July 2019 - 02:46 PM.


#6 ZL4PLM

ZL4PLM

    Vendor - ZWO Product Dev Team Member

  • *****
  • Vendors
  • Posts: 1,376
  • Joined: 23 Apr 2017
  • Loc: Darfield, New Zealand

Posted 27 July 2019 - 10:02 PM

nah its the lock and once EAF Is mounted it won't move anywhere unless powered and moved by the focus control software 


  • The_8_Bit_Zombie likes this

#7 b.bill.p

b.bill.p

    Vostok 1

  • -----
  • Posts: 128
  • Joined: 25 Apr 2017
  • Loc: Orange Co, California. USA

Posted 20 November 2019 - 08:24 PM

I received my ZWO EAF and mounted it on an AstroTech AT80 using images from this forum and a few others.  Total time was about 1 hour plus finding a suitable DC cable.    DON”T forget to purchase a heavy duty 5.5/2.1 barrel connector and cable. Since the ZWO is rated to draw 1/2 amp or more at 12 volts use a good cable that won’t drop the power under surges.    


  • psandelle likes this

#8 Ballyhoo

Ballyhoo

    Aurora

  • *****
  • Posts: 4,757
  • Joined: 22 Jul 2011
  • Loc: San Diego

Posted 20 November 2019 - 11:05 PM

I received my ZWO EAF and mounted it on an AstroTech AT80 using images from this forum and a few others.  Total time was about 1 hour plus finding a suitable DC cable.    DON”T forget to purchase a heavy duty 5.5/2.1 barrel connector and cable. Since the ZWO is rated to draw 1/2 amp or more at 12 volts use a good cable that won’t drop the power under surges.    

is that cable and conductor you mention a on hand accessory? 


Edited by Ballyhoo, 20 November 2019 - 11:05 PM.


#9 b.bill.p

b.bill.p

    Vostok 1

  • -----
  • Posts: 128
  • Joined: 25 Apr 2017
  • Loc: Orange Co, California. USA

Posted 21 November 2019 - 01:51 AM

I cut the cable loose from a transformer in my junk box and soldered a new connector to a 12 volt battery. The cable looks like 16 gauge copper wire, more than adequate. 




CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics