From: "milton_aupperle" <milton@outcastsoft.com>

Date: February 5, 2010 11:19:44 AM MST

To: Astro_IIDC@yahoogroups.com

Subject: Re: new filter wheel...!

Mark;

Nice wheel and rig.

If it's an .AS TIS camera, you can do exposures up to 60 minutes without needing the trigger pin setup that PGR use. The "normal" TIS camera other cameras were either 30 or 60 second exposures (I forget now) and don't support bulb trigger, so that's the max exposure they can do.

And the only difference between TIS "normal" and .AS cameras is the Firmware load, they are exactly the same camera physically.

I have been asking PGR for 3 years now to implement something like that in their own firmware, but my requests and suggestions fall on deaf ears. TIS got it right the first time.

If PGR had done that, I could have put together a schematic for a Hirose connector so that you could hook it up to either a RS232 serial port or possibly even an ST-4 port. The camera could directly talk to your mount and you would not need a USB to Serial or a GPUSB for guiding.

TTYL..

Milton Aupperle

--- In Astro_IIDC@yahoogroups.com, Mark Gaffney <markgaffney@...> wrote:

By the way Alberto,

I was wondering how you got by the "time exposure" problem with your  

TIS cameras. Don`t you have to open the shutter for an extended time  

when doing your pictures of DSO`s? PGR cameras have this option but I  

thought TIS ones didn`t..?

Mark.