Re: EXOS-2 PMC Eight, displacement planets and the moon #EXOS2 #TECHNICAL #OpenGOTO #ExploreStars #alignment


Jerry Hubbell - Explore Scientific VP Engineering
 

On Tue, Nov 12, 2019 at 06:00 PM, Wes Mcdonald wrote:
As for cone error you should eliminate it using the method posted by Jerry with a link to the Astronomy Shed YouTube channel.  
Here is the excerpt from message #3646 where I mention cone angle

Also, you need to correct for another error where your telescope is mated to your mount called Cone Angle. This is a condition where the telescope is not in optical alignment with the mount's RA axis.  You can find more about that here: https://www.youtube.com/watch?v=WatdQlPp22Y  . You can get a fairly good polar alignment (within a couple of degrees) without doing a cone angle adjustment, but it will throw things off a small amount.

Here is the link to the whole message

https://espmc-eight.groups.io/g/MAIN/message/3646

 
--
Jerry Hubbell
Vice President of Engineering

Explore Scientific, LLC.
jrh at explorescientific.com

www.explorescientificusa.com
1010 S. 48th Street
Springdale, AR 72762
1-866-252-3811

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
Mounts
: 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!

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