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Déjà la tendance est de travailler avec des poses plus courtes pour limiter notamment l'effet ampglow assez important sur cette cam, donc (en résumé) des poses de maximum 180 sec avec un gain de 139 max (unity gain), il y a déjà là tout un champ de débats avec pas mal d'autres valeurs possibles qui vont tous dans ce même sens, mais ce ...
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QHY294C Gain 2900 -20C. STC Duo narrowband filter. 16 x 900sec sub . SHO: NEQ6 PRO. TSAPO130Q @f/5. QHY163M. 8 x 600sec sub Ha. 8 x 600sec sub OIII. 10 x 600sec sub SII. Total integration time 8hrs20min. Stacked and processed in Pixinsight and Photoshop. Baader 2" narrowband filter setJan 17, 2018 · Unity gain is established by calibrating two pieces of equipment to interact at the same level. Frequently, the best way to set unity gain is to adjust a microphone or line signal gain to 0 dB, measured both at the preamp and output stage, and then match that 0 dB level simultaneously on the input of the second piece of equipment—whether an ... Avec un gain à 17 et l’offset réglé à 77 (paramètre type DSO par défaut dans le pilote ASCOM) , j’ai effectué 217 poses de 2s et 322 poses de 5s , le tout sur le RC10 à pleine focale (2m) et sur l’EQ8. Cela ne donne donc « que » 34mn au total , bien insuffisant mais le but n’était pas de faire de la belle image.
The QHY163M/C has a built-in 128MB DDRII image buffer. Which helps with large image data transfer, preventing the frame lost under long exposure and lets the camera run smoothly in some low speed computers or if it is connected to a USB2.0 port. As far as your characterization of measures I think it preferable to express gain in terms referencing back to the resolution of the ADC for this camera which is 12 bits. Hence the gain at the zero setting would be 0.26*16 or ~4 e-/ADU. So unity gain would be somewhere above a setting of 10. The noise figures look great!QHY163 M/C camera has a 4/3 inch, 16 megapixels CMOS sensor. Available in both mono and color version. USB3.0 interface. 23FPS @ 16 megapixels full resolution output, 30FPS @ 4K HD video output. QHY163 M/C has very low readout noise and 8/12bit ADC. The QHY163M/C has a built-in 128MB DDRII image buffer. Which helps with large image data transfer, preventing the frame lost under long exposure and lets the camera run smoothly in some low speed computers or if it is connected to a USB2.0 port. You're right, it makes sense from ADC point of view, so for gain setting of 10 we have 0.08125*16 = 1.3 e-/ADU, and as you wrote unity gain will be little above 10. When we plot this real ADC gain versus camera gain setting we got this log plot: So the unity gain seems to happen at gain setting between 12 and 13. Cheers. Lucas Complete gain setting curve with full well depth: Logarithmic linearity: Measured/calculated gain vs gain setting and read noise e- I think I'm aiming for 25 as a high gain setting, unity gain (13) in the middle and 6 as a low gain. Read noise and well depth in each of them are: Gain 6: 2e- / 9700e- Gain 13: 1,5e- / 4300e- Gain 25: 1,2e- / 1080e- Цитата: Дмитрий Маколкин от 06 Ноя 2020 [19:10:34]С Вашего позволения, ещё немного поработал с фоном. Не очень точно, всё же исходник - jpeg.. Не понравится - удалю, понравится - присылайте... QHY163M/C camera has 4/3inch, 16mega pixel size CMOS sensor. It has both mono version and color version. USB3.0 interface, [email protected] pixel full resolution output, [email protected] HD video output. QHY163M/C has very low readout noise and 8/12bit ADC. Two stage TEC cooling and the typical maxium delta T is -40 below ambient.
FullWell >32ke- QE 78% Readout Noise [email protected] gain [email protected] gain System Gain TBD Unity Gain TBD Frame Rate (on 8bit) 138FPS @ 1936*1216 [email protected]*600 [email protected]*300 ROI Support Yes. Any Area ROI Exposure Time 50us-1800sec AD Sample Depth 10bit/12bit (8bit/12bit output) Anti-amplight Control Yes (Reduce the amplight significantly) Cooling 2-stage ...
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Il gain è formalmente definito come rapporto tra il numero di elettroni convertiti all'interno di un pixel e la corrispondente lettura numeri in ADU (Analog-Digital Unit). Il gain vale 1, e si definisce unity gain, quando ad ogni elettrone convertito corrisponde un conteggio di 1 nel file prodotto dalla camera. Se in un pixel si misura il ... Dec 28, 2019 · OBJECT INFORMATION. NGC 2261 (also called Hubble’s Variable Nebula) is a reflection nebula located in the constellation Monoceros. The nebula is illuminated by the giant B0 star R Monocerotis (R Mon). The last choice in this section determines how the gain is chosen – the two options are ‘Unity Gain’ which aims for 1 electron per ADU (or as close as possible) and ‘Max Dynamic Range’. ‘Max Dynamic Range’ finds the gain where the final stacked image will have the maximum ratio between the brightest thing that is not quite ... M76_200x10s_-20_QHY163M_forum.jpg. ... Sarebbe meglio averne 14 ovviamente, ma solo se si è attorno all'unity gain o sotto di esso. Al livello di gain che ho usato ... Readout Noise [email protected] gain [email protected] gain. System Gain TBD. Unity Gain TBD. Frame Rate (on 8bit) [email protected] Full Resolution [email protected] HD Video [email protected]*[email protected]*1024 [email protected]*768 [email protected]*600. ROI Support Yes. Any Area ROI. Exposure Time50us-1800sec. AD Sample Depth 10bit/12bit (8bit/12bit output) On Camera Image BufferYes, 128MB ... Imaged with the QHY163M Unity Gain Settings: Gain = 12 . Offset = 60. CMOS Cooled to -25°C . Calibration Frames: 50 x Bias/Offset. 30 x Darks. 20 x Flats and Dark Flats. Image Acquisition: Sequence Generator Pro via the Mosaic and Framing Wizard. Plate Solving in SGP via the Astrometry.net ANSVR Solver. Autoguiding via Open PHD Guiding ...