SharpCap Forums

Hi,

I have a suspicion that this is down to a partial/buggy implementation of the conversion between gain values and brightness changes in the QHY SDK for your camera. This is something that QHY started adding to their SDK a year or two back - a way for applications like SharpCap to ask the ...

Hi,

OK, sadly you are basically running a denial of service attack on your own copy of SharpCap with that sequence - it is adding new notifications in a fast loop, and each notification requires the UI to respond to pop up the green notification bar, etc. As well as that the UI has to record the ...

Hi,

on the right hand side, in the control area there should be a block titled 'Thermal Controls' which will contain the cooling controls. If you haven't used those controls before, that block may be collapsed, hiding the contents. Press the down arrow next to the title of this block to expand it ...

Hi Wayne,

yes, will definitely be worth a try at gain 300 for narrowband on the 26C :)

Google is actually right on the IMX410 chip if it is an Altair version - I just found the code that sets the changeover point to 520 for that model. Oddly for the ToupTek and Mallincam equivalents, I have code ...

Hi,

yes, you would need a wait time or something similar to ensure that by the time you execute the re-GOTO movement, the mount will consider the target past the meridian and will stay in the flipped position for the movement. Some mounts have a certain amount of configuration available for this ...

Hi,

A quick starting point would be:

* Set the camera into RAW16 mode

* Set the gain to 120 or above to take advantage of the lower read noise beyond that point - probably don't go much above 250 though

* Set an exposure of maybe 15s to start seeing enough detail to get going

* Set higher gain ...

Hi,

Oh, I see now - you are referring to the 'Select ROI' feature rather than just moving the ROI around using the Pan/Tilt - that would be more annoying and it makes more sense to fix that as it is a purely user-interface function that then internally sets the camera pan/tilt settings.

cheers ...

Hi,

firstly, you are using quite an old version of SharpCap, so please update to the latest version from https://www.sharpcap.co.uk/sharpcap/downloads - it's possible that any error or bug you are encountering has already been fixed. It's probably also worth installing the latest ZWO camera drivers ...

Hi Mike,

sorry, I keep meaning to write a little something about that new 'Background' tab, but haven't got around to it for one reason or another...

The preprocessing controls don't try to bring the background level down to zero, just bring it to a consistent value - trying to bring it to zero ...

Hi Keith,

according to the log, the files were initially saved to


D:\SharpCap Captures\Capture\2025-04-15\Light\rawframes


and then, after the rename, the new directory was


D:\SharpCap Captures\M51 (Whirlpool Galaxy)\2025-04-15\Light\rawframes


There are no errors shown regarding ...