Re: File /PMC-Eight 20A01 Firmware Installation Kit updated #ExploreScientific #file-notice #UniversalFirmware


I did the second test immediately. No other changes. I tried a few more times and chalked it up to “testing noise/random artifacts” and “this is not the problem you are seeking”.  


From: <> On Behalf Of Jerry Hubbell - Explore Scientific VP Engineering
Sent: Saturday, May 15, 2021 8:41 AM
Subject: Re: [ESPMC-Eight] File /PMC-Eight 20A01 Firmware Installation Kit updated #file-notice


On Fri, May 14, 2021 at 02:10 PM, Chuck Lewis wrote:

I re-ran the slew test, and it was perfect. HOORAY, I thought! But in a second test, the crunching returned. For grins, I tried reducing both currents to 600ms., but to no avail.

Hi Chuck,

Thanks for reporting all this... above you said it was all working and then it started crunching again. Do you recall changing anything that would cause it to fail again, or did you do the second test right after the first test that was good? 
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)
: ES 165 FPL-53 ED APO CF, ES 102 FCD100 ED APO CF
:  QHY174M-GPS + FW, QHY163C
: 3-inch 0.7x Focal Reducer Field Flattener, Filters: Luminance,
Red, V-band Photometric, Diffuser, 200 lpmm Spectral Grating

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

Scope: Explore Scientific AR-102, Astro-Tech AD72ED, Nikon kit lenses
Mounts: Exos2GT-PMC8, Homebrew barndoor tracker
Camera: Nikon D7000, QHY5III-462C
S/W:  APT, DeepSkyStacker, Stellarium, CdC, PHD2, Sharpcap Pro, Gimp, RawTherapee, StarTools

Join to automatically receive all group messages.