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
Vice President of Engineering
Explore Scientific, LLC.
jrh at explorescientific.com
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
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!