My fault guys. I thought I had already joined this group, but apparently that was not the case. I have done so now. Derek, thanks for the update re the driver. I thought it might be out of beta by

Thanks Roland, that's great to know. Would the mount run for several days at 52Ah until complete battery discharge, or would the mount run several days until 50% battery discharge? (I hear deep-cycle

Hi Ray, So for now, it sounds like the only PEM recourse after upgrading to the new chip is to redo the PEC curve with PEMPro. Will the Worm Index value be one of the things that APCC can capture

The mount uses less than 1 amp when operating normally (typically 500 to 700 milliamps). It would run for many days on a 52 AH battery. Rolando

Hi Roy, I will only be using the battery for the mount. My heaters, CCD, laptop, etc have a separate power supply. Having said that, is 52Ah decent for a few nights at a time? Thanks, Armand

Marj, I received my chip today and proceeded to change it. All went well. Now my question. The S chip that I received has a revision date on it of "7/16/12" and the S chip shown in the instruction

Talk to Lunt Solar Systems about a Hydrogen alpha etalon and the blocking filter that must be used with it. Alan

+1 Baader Herschel prism For imaging, you may add a band pass filter, centered at the best performance wave length of the refractor (i.e. lowest spherical error). Usually the refractors perform best

Jim, The cheapest and good filter is a Baader Astro-Solar filter that is put in front of the objective. The best but expensive solution is to use a (Baader) Herschel prism. Both available from

Armand, ANY deep-cycle AGM battery will do. I wonder if 55Ah will be enough. Mount by itself for one night; yes. I also have a low power PC (12w), cooled CCD camera (50-60w) and sometimes a dew

Can anyone lend some knowledge to assist me in choosing a solar filter setup for my A-P 127 Starfire? I am new to the field and may ask questions that are common to the rest of you. We all have to

Stunningly awesome image, Floyd!! Parijat

Hank, You can do that but the problem is that I believe the worm's index value is lost in the upgrade and this cannot be restored. -Ray Gralak Author of Astro-Physics Command Center (APCC) Author of

Gerald, Its been awhile, but I thought I remember Ray telling me that you can use PemPro to download the curve thats loaded in the mount and save it on your PC, for just such an occasion. Then I

No. Didn't think of that at the time. I just plan on doing another Pempro run. Gerald

Gerald, thanks for the feedback. Was anything said about losing the PEMPRO input previously saved for Q or earlier? Larry

Hi Tom, Sure no problem. Thank you. Dong Hun

After talking to George, I believe this is the case for "Q" chips and earlier: The controller won't be synced to the correct position to the last location when the mount was powered down. The term

Hi Roy Thank you for replying I looked at your spreadsheet, which is very usefull. I made a similar excersise https://dl.dropbox.com/u/27494488/simulation.xls But wanted to simulate the reduction

The amber light comes on if the servo senses that the motor is not responding to commanded movement. This can happen in a number of ways. 1) severe imbalance of the RA axis such that the RA motor