Re: GTOCP4 Control Box

Tyrel Smith

I was recently considering this as well.. I have an ‘07 Mach1 that had the CP3 with its original L chip. In the end I decided I didn’t need some of the CP4 functions like WiFi and Ethernet, and elected to do as Bill mentioned and upgraded my CP3 to the V2 chip. I used the money saved to purchase APCC Pro so I could do pointing models. Happy with the decision so far.

If I didn’t already have a hand controller I might have further considered the CP4 so I could use my phone or iPad to run the mount from planetarium software for visual use.

Ty Smith

On Jan 23, 2019, at 08:18, Bill Gardner pictorobservatory@... [ap-gto] <ap-gto@...> wrote:


Very interested in this thread as I have an AP900 with CP2 and have been seriously considering the upgrade to CP4.


Pictor Observatory

Twitter: @pictorobs

Minor Planet 21350 - billgardner


On Wed, 23 Jan 2019 at 02:33, Bill Long bill@... [ap-gto] <ap-gto@...> wrote:

You can upgrade the chip in your CP3 (if you dont have the V2 chip that is) and that would allow you to use APCC Pro, which has a very good pointing and tracking correction model in it. Similarly, you can use PEMPro (which should have come with the mount) to record a fresh PE curve, which should help as well.

While I do have CP4 on my 1100, I think a fresh well-made curve and using APCC/APPM to build a model (it doesnt take that long to do) would be the first places I would look to improve performance at.

CP4 does have its benefits though. For the purpose you stated, I think the two things I mentioned here would be cost effective to do. The chip is like $80, and APCC Pro is $500, but would of course work with any AP mounts and a CP4 box as well.

From: ap-gto@... <ap-gto@...> on behalf of salfranc@... [ap-gto] <ap-gto@...>
Sent: Tuesday, January 22, 2019 10:17 PM
To: ap-gto@...
Subject: [ap-gto] GTOCP4 Control Box


I have an Astro Physics GTO 1100 fitted with the CP3. I have been reading about the CP4 and got myself in a twist. 

I would like to know if I would get better tracking and auto guiding if I installed the CP4 to my mount.

Thank you 



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