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Astrophotography and Sketching >> DSLR & Digital Camera Astro Imaging & Processing

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nine44
sage
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Reged: 01/19/13

Best automated focusing solution for AT65EDQ?
      #6148983 - 10/20/13 07:39 PM

I have been noticing a fairly obvious focus shift in my overnight imaging sessions. I'd love to learn what others are using for autofocus of the AT65EDQ. I have BYEOS and would love to keep using this software. Thoughts???

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waassaabee
Postmaster
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Reged: 11/26/07

Loc: Central California Coast
Re: Best automated focusing solution for AT65EDQ? new [Re: nine44]
      #6149406 - 10/21/13 08:30 AM

I'm curious what the temperature ranges are that are causing the shift...

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nine44
sage
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Reged: 01/19/13

Re: Best automated focusing solution for AT65EDQ? new [Re: waassaabee]
      #6149551 - 10/21/13 10:06 AM

Not a whole lot--from 20C to 10C, typically. If I leave focus alone, the next night, focus is spot on. So I don't think it is slippage in the focuser.

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waassaabee
Postmaster
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Reged: 11/26/07

Loc: Central California Coast
Re: Best automated focusing solution for AT65EDQ? new [Re: nine44]
      #6149700 - 10/21/13 11:38 AM

Yikes! This is common to the AT65EDQ? I express concern as I am on the list for the next shipment.

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Seanem44
Pooh-Bah
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Reged: 09/22/11

Loc: Woodbridge, VA
Re: Best automated focusing solution for AT65EDQ? new [Re: waassaabee]
      #6150050 - 10/21/13 03:16 PM

No need to be concerned with the AT65EDQ in any way. At it's current price point, its an absolute steal. They could probably sell it for $150 more than current and I'd still call it a good deal.

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Jason B
Proud father of 5!!
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Reged: 06/21/04

Loc: Mid-Michigan
Re: Best automated focusing solution for AT65EDQ? new [Re: Seanem44]
      #6150135 - 10/21/13 04:05 PM

I have been imaging in Michigan with our crazy temp swings and have never noticed an issue before with mine.

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nine44
sage
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Reged: 01/19/13

Re: Best automated focusing solution for AT65EDQ? new [Re: Jason B]
      #6150195 - 10/21/13 04:43 PM

The AT65EDQ is awesome! The focus issue is common among all scopes. That's why they make automated focusers. So, back to the original question...can someone offer a reco for an automated focuser???

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kyang
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Reged: 12/09/12

Loc: Fremont, CA
Re: Best automated focusing solution for AT65EDQ? new [Re: nine44]
      #6150392 - 10/21/13 06:43 PM

Want to know the suggestion too

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fetoma
Carpal Tunnel
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Reged: 09/26/06

Loc: Southern New Jersey
Re: Best automated focusing solution for AT65EDQ? new [Re: kyang]
      #6150536 - 10/21/13 08:23 PM

It looks like BYEOS can control an ASCOM focuser, along with FocusMax (free), so a Robofocus unit should do the job.

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waassaabee
Postmaster
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Reged: 11/26/07

Loc: Central California Coast
Re: Best automated focusing solution for AT65EDQ? new [Re: fetoma]
      #6150561 - 10/21/13 08:43 PM

Will the robofocus do the temperature compensation?

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jerry10137
sage
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Reged: 01/26/13

Loc: Texas, USA
Re: Best automated focusing solution for AT65EDQ? new [Re: waassaabee]
      #6150665 - 10/21/13 09:44 PM

I don't mind babysitting my focus. That's part of what we need to do. If there is an automated solution out there tho, I would be very interested to hear it.

My last imaging session was done in the high plains desert where the air was dry and warm during the day and fairly chilly in the evening. I had to babysit the focus on all three of my rigs. Not complaining but if there is an automated solution, I'd love to hear it.


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Seanem44
Pooh-Bah
*****

Reged: 09/22/11

Loc: Woodbridge, VA
Re: Best automated focusing solution for AT65EDQ? new [Re: jerry10137]
      #6150670 - 10/21/13 09:45 PM

Wow... Those robofocusers are the price of the AT65 almost. I can live without.

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nine44
sage
*****

Reged: 01/19/13

Re: Best automated focusing solution for AT65EDQ? new [Re: Seanem44]
      #6150737 - 10/21/13 10:20 PM

How about this? Anyone here using one? Looks like about $200.
http://www.usb-foc.us/


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fetoma
Carpal Tunnel
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Reged: 09/26/06

Loc: Southern New Jersey
Re: Best automated focusing solution for AT65EDQ? new [Re: nine44]
      #6152001 - 10/22/13 04:30 PM

229 euros = $315 plus shipping costs. Get the Robofocus. One thing to remember with temp. comp. is that the sensor is sensing the air temp. and not the optics, so calibrate accordingly.

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nine44
sage
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Reged: 01/19/13

Re: Best automated focusing solution for AT65EDQ? new [Re: fetoma]
      #6152511 - 10/22/13 09:31 PM

Thanks Frank!

Edited by nine44 (10/22/13 10:17 PM)


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