M45 - The Pleiades

2nd light with the modified 300D.

Details under the image.

www.webtreatz.com/index.php?option=com_z...amp;key=16&hit=1

As usual, processed by Jed with Images Plus.

Amazing image Dave. Well done!

Excellent star images as compared to your first one that appeared to be slight pear shape at high magnification. The mod really enhances the red region and probably more detail. Again, like Dave L it would be interesting to see the comparison (with & without filter)

Is the red glow around the perimeter of the Pleiades ie. part of the extension of the nebulosity (H alpha region?), or is the red enhancement due to the red sensitivity of the sensor, or something else?

Well done to Jed as well.

Eamonn A

Looking through the porthole of a spaceship

Keith..

Is the red glow around the perimeter of the Pleiades ie. part of the extension of the nebulosity (H alpha region?), or is the red enhancement due to the red sensitivity of the sensor, or something else?

Hi Eamonn, Thanks for the comments.

The red glow you see is a vignetting effect unfortunately. As of now, I dont have a 2" LPR filter forcing me to use 1.25" accessories. This causes a porthole effect as field illumination drops off towards the edge. Not a problem in high f/ratio imaging as the smaller objects are usually cropped, but obvious in wider field stuff like these images.

Dave you are producing some incredible images. Beautiful capture!!

Dave/Jed - nice framing. Glad to see you still have the vignetting problem and delighted to see you suffereing from a severe attack of dustmotes.

I hope you don't get these fixed any time soon or we'll really be in trouble...

Dave