Open clusters M45 and M35

The image of M45 was made from exposures taken on two seperate evenings. The red and green colour channel exposure times were kept shorter than the blue . The exposure time for red and green was 30 minutes and the exposure time for blue was 4 hours .  This was because blue was used for image luminance to reveal the faint nebulosity .

For M35, the exposure times were five minutes for each RGB colour channel