A. 使用 Siril（免费开源天文软件） Siril 有强大的图像筛选功能。 将所有照片导入 Siril 的序列（Sequence）。运行 stat 命令（统计分析）。查看输出的 FWHM（半高全宽）或 HFD（半高宽）数值。数值小且稳定：星点锐利，对焦准确。数值突然变大或波动剧烈：说明该张照片失焦、有云或抖动。你可以根据 HFD 数值排序，直接剔除数值异常高的照片。B. 使用 PixInsight 的 SubframeSelector 脚本 使用 SubframeSelector 脚本分析所有图像。它会生成一个表格，包含 Eccentricity（偏心率）和 FWHM。Eccentricity（偏心率）：0 代表正圆，越接近 1 越椭圆。脱线的星星偏心率会很高（>0.3 或 >0.5）。FWHM：数值越大星点越散。按偏心率排序，一键剔除高偏心率的图。C. 简单的 Python 脚本（进阶） 如果你会一点代码，用 astropy 或 opencv 写个脚本： 提取画面中最亮的 10 个点。计算它们的轮廓（Contour）或椭圆拟合。如果长宽比（Aspect Ratio）> 1.5，或者圆度（Circularity）< 0.5，标记为“脱线”。D. “ blink ”眨眼法（找偶发问题） 操作：在 Photoshop 或 Lightroom 中，全选照片，按 L 键（Lightroom的比较视图）或快速按方向键左右切换。

When I was taking pictures of M99 Galaxy using my Seestar S50 in Alt Az mode, I had gotten roughly 1,600 frames over the course of 3 clear nights. I was getting almost perfect frame acceptance rates, as I was only doing 5 second exposures from my Bortle 8 location. When I went to use Deep Sky Stack for all these accepted frames, it only used about 600 frames. I selected all the frames, and it rejected so much time spent gathering data. I went through to try and keep as many frames as possible where the rotation did not fully interfere with the stacking process. I'm just curious what I could be doing wrong because this is the only time it's happened to me where I've had so many rejected frames.

我用的是asiair mini，在拍摄的时候发现能按照当晚高度角来做显示，觉得很不错。但是由于asiair练使用必须通电并连接，有时不在家不方便看。请问有类似的软件/网页吗？

Greetings from Germany, this app is super cool. I hope for a nice exchange with each other. My equipment consists of the Skywatcher EQ6R-Pro, the ASI 294MC Pro and as a guiding camera I use the ASI120MM with a 60mm Omegon guiding scope.

Hello everyone,I was at NEAF today, and if any of you haven't heard, ZWO announced the Seestar s50 Pro there. They mentioned a better sensor, longer focal length, and different design/look. Other than that, I didn't get much information. What are all of your thoughts on this? Excited or did you want a Seestar s70? I was expecting them to go for the s50 pro next considering they just made the s30 pro. Interesting that they said they will change the design. Dwarf Labs also announced the Dwarf 4 but I like the Seestars better XD

I was very disappointed by last night session. I use the Seestar S50 in ÉQ mode and I repeated several times the polar alignment procedure until I reached (0°, 0.1°) of residual pointing error. Which 50 mm aperture, I am expecting foot Earth rotation compensation with such error. Also, last night, sky condition were very nice, no Sirius, no wind. Despite this, all my 20s and above exposure exhibited star trails of 10th of pixel long, rejection rate 100%. I did in the past manage to have 60s exposure. What could have been wrong ?

Anyone knows why this would happen? I haven't used AI or cheated in any sort of way. The image was 1st place and then suddenly disappered entirely from the page, when normally they would like go forward and then back. Any ideas are welcome!

So I'm editing all my images with Siril (stacking, stretching and star removal), GraXpert(noise reduction, background and deconvolution of objects) and finally photoshop for all the composing and editing. I had tried Pixinsight with bXt and although the gained details where quite astonishing (I guess thats why its used so much in the first place), I think the software is awful in terms of user interface. So, any thoughts on this are welcome!

I have an iOptron Cube Pro that does all the tracking, so would the ASIAIR be worth getting? I'm intrigued with the idea of less cables, and being able to use my tablet wirelessly just for the camera control and not the mount control, since that be redundant. Does anyone have something similar and what are your thoughts on it?