• Cameras

  • Courious transparent ampglow issue with my 294 MC Pro and Astropixelprocessor


My darks have a strange green bar at the end of the histogram or it is clipping data, don´t know. Is this normal? Or maybe a light leak?

I do darks without telescope with a metal cap in front of the camera.

Hi.
Dark seems to be ok. In the picture is Dark with ASI 183 MC Pro. I have downloaded your data and I will process it in PixInsight to see how it turns out.

    iosif ok thanks. At facebook other users has stack my data too in pixinsight and surprise, all was very well calibrated and nothing was seen in the stack. Only in APP and DSS I saw this issue. In AsiStack no issues too, but I would stack in the future with APP.

      Here is your data stacked with PixInsight. I have used only 10 Dark, Flat, and DarkFlat.
      All is ok.

        I processed your data with APP 2.0.0 beta 29 and it looks OK to me as well. I loaded the "dark flats" as bias and left all settings to the default values.

          iosif you see allready a little bit blueish ampglow at the right of the head from the pelican. And the left upper corner looks strange, like a gradient. Hmm...

            Tobi294MCPro I tried last night but got an upload issue with my browser. I'll upload to my cloud storage and will post the download URL here later today.

                @"Tobi294MCPro" Before I forget, you provided Flats for both Nacht 1 and Nacht 2. I only used the ones from Nacht 1.

                  Tech@ZWO Thank you and I hope that you can find anything that´s wrong in any frame ore something. Thanks a lot! :-)

                    wvreeven okay, so I don´t need new flats every new night when there is no dust or something else on the sensor?

                        Hi Tobi.

                        I own the same camera with the same amp glow.

                        I made darks of all my standard settings (temperature, gain, filters and time) and stored them on HDD.
                        Same with Bias.
                        I have no need to take darks at every session, I just use the stored darks and Bias.

                        Only flats could not be stored because of possible dust and the camera angle of the single frames you have taken.

                        My usual workflow is to set everything at the desired object, do the flats and after this configure the sequence.
                        Even if you use the plan and go to different objects in one night you can use the same flats if you do not change camera rotation.

                        If you want to create such a darks database, best way is in a cloudy night outside. 🙂
                        Outside because it’s normally cooler than inside and the peltier elements don’t heat up so much, specially with darks taken at -15° or -20°.

                        Btw, using the 294 at -20° does not guide in better frames, the frames taken at -10° are almost the same quality, besides of a saving energy if you are outdoors using a battery.

                        Cs
                        Team Deepflights