SharpCap Forums

Hi Gottfried, excellent images - glad that things are starting to work well for you :) In Live Stacking, there is an option to set which raw frames are saved which lets you choose to ignore the short frames during dithering. For saving raw frames you can choose to save * None * All * Those added to ...

Hi, yes, a nice M51 for such a short exposure - good work :) I would suggest looking at dark subtraction and slightly longer exposures (15s to 30s) as the next steps. 5s is quite short for the long focal length of an SCT, and dark frame might help reduce the slightly grainy look to the background th...

Hi David, depends where you save from in SharpCap... Save from the 'Snapshot' button (or 'Start Capture') on the toolbar will get you a single plane image with CFA matrix providing you are in 'RAW8' or 'RAW16' modes (if your camera is in RGB mode then you will get 3 plane RGB). Saving from live stac...

Hi, fortunately this is an easy one - there was a bug in the Altair SDK causing this rather trippy image to come out of the 269C camera in 12 bit mode. That bug is now fixed, and if you update to the latest version of SharpCap 4.1 beta, everything should work. Note that there is not yet a version of...

Hi Peter, unfortunately the link that you have shared doesn't seem to work (it says 'Access Denied' - I think it is the sort of link that only works for specific people, rather than one that works for anyone). My guess is that you have maybe adjusted some of the alignment settings (for instance turn...

Hi Kie, what camera resolution do you intend using? It would almost certainly be fine for 1280x1024, and almost certainly not be any good for 6000x4000 pixels... In between, it will depend on how long the frames are (how long does the CPU have to do the alignment/stacking work) and whether you inten...

Hi Ralf, yes, this is an odd one - no good reason for it to happen, but it does in SharpCap 4.0 (and started happening with an iOptron update...) Two ways to work around * Use SharpCap 4.1 beta - this uses a different way of talking to ASCOM that is unaffected by the issue * Use the ASCOM Device Hub...

Hi Jean-Francois, in general, SharpCap tracks the epoch of a set of RA/Dec co-ordinates and will change between J2000 and JNOW as required. SharpCap will ask the ASCOM driver what epoch it uses and will assume that co-ordinates from the UI are J2000. However, there are a couple of potential problems...

Hi Ian, the 'sigma' setting I was referring to is for Astrotortilla (and ASPS/Ansvr), not Astap. If there is a sigma in Astap then it is probably not the same setting. Anyway, the value for AstroTortilla is usually between 20 and 100 or so, not in the thousands, so it must be something different. Of...

Hi,

yes, use ultra-low noise for deep sky or live stacking, as the only drawback really is a lower frame rate (but if you are taking exposures of a second or more you will not notice the difference).

cheers,

Robin