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45cm望遠鏡で試す。
最近の裏面照射CMOSカラーカメラ（Neptune-C II)は赤外領域に感度が高く、RGBカラーバランスが崩れています。しかし、感度が高い。45㎝+15秒露出（ゲイン400、360枚）で調べますとm＝20.91の星を確認。赤外領域感度の高さの恩恵でしょうか！
気流、透明度、望遠鏡の光軸、追尾がより良くなれば目標の21等を捉えることが出来そうです。
最近の裏面照射CMOSカラーカメラ（Neptune-C II)は赤外領域に感度が高く、RGBカラーバランスが崩れています。しかし、感度が高い。45㎝+15秒露出（ゲイン400、360枚）で調べますとm＝20.91の星を確認。赤外領域感度の高さの恩恵でしょうか！
気流、透明度、望遠鏡の光軸、追尾がより良くなれば目標の21等を捉えることが出来そうです。
Try with a 45cm telescope.
Recent back-illuminated CMOS color cameras (Neptune-C II) have high sensitivity in the infrared region, and the RGB color balance is lost. However, the sensitivity is high. When examined with 45 cm + 15 seconds exposure (gain 400, 360 sheets), a star with m = 20.91 was confirmed. Is it a benefit of high infrared sensitivity?
If its good seeing and transparency, optical axis of the telescope, and tracking are improved, it will be possible to capture the target 21 etc.
Recent back-illuminated CMOS color cameras (Neptune-C II) have high sensitivity in the infrared region, and the RGB color balance is lost. However, the sensitivity is high. When examined with 45 cm + 15 seconds exposure (gain 400, 360 sheets), a star with m = 20.91 was confirmed. Is it a benefit of high infrared sensitivity?
If its good seeing and transparency, optical axis of the telescope, and tracking are improved, it will be possible to capture the target 21 etc.
