SharpCap Forums

Robin - You were exactly right! The QHYCCD.dll file in the Firecapture folder was dated "13-Jan-22 10:58PM" (i.e. 2 days ago), and the camera functions in Firecapture. But the QHYCCD.dll file in the SharpCap folder was dated "23-Oct-21 8:38 PM", i.e. nearly 3 months older. I copi...

Thank you very much, Robin. Your suspicion about the QHY driver makes good sense. I attempted to operate the QHY600M by using FireCapture, and it worked. Images arrived with the full frame (9400x6500) at 1 fps. (That's as fast a frame rate as I ever got from SharpCap.) Going back to SharpCap, it sti...

I'm running windows 10 on a fast, modern PC with 4 TB storage. I operate a QHY600M with 1 second exposures, full frame (9400x6500). It worked fine for 6 months. I downloaded the latest SharpCap v4.08564 64-bit, and I downloaded the latest QHY600 driver. Now, with the new SharpCap, Windows crashes ev...

An update on using QHY600M and SharpCap for photometry: I use a QHY600M camera (16-bit) to take images that enable photometry. 1. I check that box about “Save 10/12/14 bit images in FITS files without scaling . . ." (I'm unsure if this avoids ADU scaling, to permit photometry.) 2. I set "M...

I use a QHY600M camera (16-bit) to take images that enable photometry. 1. I check that box about “Save 10/12/14 bit images in FITS files without scaling . . ." 2. I set "MONO16". 3. I set gamma, brightness, and contrast to (1.0, 0.0, 0.0), because Robin states it avoids stretching. 4....

Thanks. I tried checking that box, but it didn't help. The histogram of ADU values were still stretched. But I will try again, using a different Gain setting.

Using a QHY600M (16-bit) camera, I'm trying to do photometry using SharpCap with Gain=0 and Offset=10, and writing FITS files. A histogram of the ADU values in the FITS images shows that the ADU values in the pixels are being changed, i.e., "stretched" (for astrophotography folks). What Sh...

Dear Robin, Thank you for all of those insightful thoughts about "gain" settings for SharpCap and the QHY600M. Here is a note of agreement. The QHY600 User Manual shows the Read Noise has a sharp drop from 3.7 to 1.6 e- at "Gain Setting" = 57, referring to QHY's "Gain Settin...

Dear Robin, Your “Sensor Analysis” is absolutely brilliant. Thank you for creating this automated treasure. May I offer you some feedback about my experience with your Sensor Analysis? I have done this calculation myself many times (for different cameras), by assuming Poisson fluctuations in the arr...

Thanks, Robin. Excellent advice.