And a Quarter Gets You Coffee

The following image is composed of 24×600 second subs, Ha filtered, taken on March 9th and 10th. It has much less noise than the previous image. It will be interesting to see what happens with another couple of evenings worth of subs added.

Horsehead Nebula (B33, IC434) – Ha filtered

Part of the noise in the previous image was due to a shortage of darks – increasing the number of dark frames did reduce the noise greatly.

This entry was posted on Monday, March 10th, 2008 at 11:04 pm and is filed under Amateur Astronomy. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.