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Zero Shift Focus Unit


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#1 kljw

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Posted 01 April 2013 - 10:01 PM

Hi
not sure if this is in the correct section, but here goes.

Does the zero shift focus unit, override trhe need of the maunal focus on a LX200 12"? by these i mean, do you still need to get a rough focus, and then fine tune with the Zero Shift Unit?

many thanks.

#2 ahopp

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Posted 02 April 2013 - 03:43 AM

Yes.

Tony
____________________________
14" Meade LX850 ACF f/8
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#3 d33d0gg

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Posted 02 April 2013 - 06:01 AM

To expand on Tony's response (Since you asked two questions, and he answered that last)

It does not override the need to use the manual focus. You get a rough focus, and then fine tune it with the focuser.

Daniel
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LX200GPS 12"

LX80
ETX90


#4 gspie

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Posted 02 April 2013 - 09:30 AM

FWIW: With the LX-850 OTAs, the manual shifter is pretty god -- no discernable jiggling of image when turning fine focus knob.
The only advantage to the electric focuser on it is to focus while you are a bit away from the scope (sa at your computer -- within reach of the hand controller) to do fine focus while imaging.
LX850 with 10" ACF OTA and Takahashi FS 60C OTA -- SBIG STT-8300M CCD with FW8G-STT Self Guiding Filter Wheel and SBIG AO-8 Adaptive Optics -- Camera Control and Image Calibration with Maxim DL/CCD Pro, Image processing with PixInsight, and final composition with Photoshop CS5

http://home.comcast....ie/astroweb.htm

#5 deepwaterescue4u

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Posted 02 April 2013 - 01:38 PM

You will love the zero shift focuser when you do not have to touch the scope on the fine tune they are well worth the money...

Terry

Meade LX200 14" ACF GPS
Meade 4 speed micro focuser
Milburn Wedge
Panama City Florida

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#6 gspie

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Posted 05 April 2013 - 12:11 PM

True -- that is a big benefit. If you are doing AstroPhotography, it is easier to tweak focus using the control paddle (and possbly Telescope control sopftware on PC)
I guess my only reason for previous post is that you can manipulate the focuser without getting much (if any) image shift by hand -- big improvement over my clasic LX-200.
LX850 with 10" ACF OTA and Takahashi FS 60C OTA -- SBIG STT-8300M CCD with FW8G-STT Self Guiding Filter Wheel and SBIG AO-8 Adaptive Optics -- Camera Control and Image Calibration with Maxim DL/CCD Pro, Image processing with PixInsight, and final composition with Photoshop CS5

http://home.comcast....ie/astroweb.htm




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