Re: EXOS2 PMC-Eight Polar Alignment issue.


I use 3 compasses, all 3 are different. I use a spirit level. 

On 3 Sep 2020, at 21:36, Doug Doonan via <dougdwd@...> wrote:

Hi all
 BEWARE of some phones and their app for compass and level. My phone is way off.
Go to Home depot and get a half way decent level and compass.
Doug Doonan

-----Original Message-----
From: Bill Kinnair via <kinnawill@...>
Sent: Thu, Sep 3, 2020 2:46 am
Subject: Re: [ESPMC-Eight] EXOS2 PMC-Eight Polar Alignment issue.

On Wed, Sep 2, 2020 at 09:41 PM, Jerry Hubbell - Explore Scientific VP Engineering wrote:
On Wed, Sep 2, 2020 at 01:22 PM, Bill Kinnair wrote:
I think I might be polar aligning wrong it's all so confusing, can you confirm that Polaris has to be centred in the little circle or do I need to preform some steps before hand?
You should use a level app on your phone if you have one and a compass to independently verify that you are very close (to within a couple of degree) of the North Celestial Pole (NCP). If that is the case, then you should be within a 2 to 3 degrees of the target when slewing to the object. Close enough is good enough for this first try. Don't forget to take into account you local Magnetic Declination for the compass reading.
Jerry Hubbell
Vice President of Engineering

Explore Scientific, LLC.
jrh at
1010 S. 48th Street
Springdale, AR 72762

Author: Scientific Astrophotography: How Amateurs Can Generate and Use Professional Imaging Data
             Remote Observatories for Amateur Astronomers: Using High-Powered Telescopes From Home

Mark Slade Remote Observatory (MSRO) IAU MPC W54 Equipment
Wilderness, VA
: ES PMC-Eight G11 + Telescope Drive Master (TDM)
Scopes: ES 165 FPL-53 ED APO CF, ES 102 FCD100 ED APO CF
Cameras:  QHY174M-GPS + FW, QHY163C
Misc: 3-inch 0.7x Focal Reducer Field Flattener, Filters: Luminance,
Red, V-band Photometric, Diffuser, 200 lpmm Spectral Grating

Software: MaxIm DL 6, Cartes du Ciel, Astrometrica, AstroImageJ, AutoStakkert!

I don't think this is my issue, my issue is trying to read/understand the reticule markings in the Polar scope they are confusing.


Doug Doonan
HomeBru  6 inch Reflector  f 6.6
HomeBru  85 mm Refractor  f 5.6
Long retired EE.

Michael Whitaker
Wakefield, UK. 
MOUNTS. Exos-2 PMC Eight..
SCOPE: RVO Horizon 72ed. 
CAMERA: Not Applicable. 
SOFTWARE: Just iPad at moment. 

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