Hi Robin
I've been using a Solex spectroheliograph and an SGH 700 for some time. I use an Ioptron HEM15 equatorial mount with a Sharpcap script (written by MLAstro) to automate scans. The script allows you to set a non-standard slew speed, such as 8.2x or 10x the sidereal speed. These non-standard speeds are better suited for obtaining a circular image depending on the frame rate and pixel size of the camera. I noticed that this mount, unlike others, currently doesn't accept non-standard values (but only 1x, 2x, 4x, 8x, 16x). Could there be a way to set these non-standard speeds by modifying some parameters in the Ascom commands or elsewhere in Sharpcap, or does it depend solely on the Ioptron drivers?
Thanks a lot
Fabio
Non standard slew speed for spectroheliograph scans
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Fabioibirru
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Re: Non standard slew speed for spectroheliograph scans
Hi Fabio,
there are two things going on here...
The iOptron mount may or may not support completely custom rates (it probably does to be honest). On top of that, SharpCap always limits the rates that it shows to a standard selection when the mount supports custom rates. That just works nicely for the sorts of things that SharpCap uses movement rates for itself - it's good enough to have the rates like 2x, 4x, 8x, etc.
To get access to the custom rates, you need to go behind SharpCap's back and talk direct to the ASCOM driver from the script. That's perfectly possible to do, but it requires more code because you have to deal with the whole complexity of ASCOM movement rates, rather than SharpCap's simplified version.
Someone else was asking about this very thing a day or two ago - quite likely in the 'Scripting' forum.
cheers,
Robin
there are two things going on here...
The iOptron mount may or may not support completely custom rates (it probably does to be honest). On top of that, SharpCap always limits the rates that it shows to a standard selection when the mount supports custom rates. That just works nicely for the sorts of things that SharpCap uses movement rates for itself - it's good enough to have the rates like 2x, 4x, 8x, etc.
To get access to the custom rates, you need to go behind SharpCap's back and talk direct to the ASCOM driver from the script. That's perfectly possible to do, but it requires more code because you have to deal with the whole complexity of ASCOM movement rates, rather than SharpCap's simplified version.
Someone else was asking about this very thing a day or two ago - quite likely in the 'Scripting' forum.
cheers,
Robin