hi all,
This is a (L+r):RGB image of ngc7538 a small ( 6' diameter ) faint nebula in Cepheus very near the bubble nebula. The sizz of this is just a hair bigger then the bubble part of the bubble nebula.
Imaged with a Mewlon 250 at f9 and ST10XME 50 mins Lum 1x1 bin and 35 mins Red 2x2 bin were combined for the lum image by overlaying the 1x1 bin over the 2x2 bin and using about a 80% combine ratio so it's mostly 1x1 with a bit of the 2x2 red to give some added signal to the faint areas.
The RGB was 15min each channel 2x2 binning
link
http://starryforge.com/NewStuff/7538LRGBppa.jpg
comments welcomed and appreciated,
clear skies,
Larry Citro
This is a (L+r):RGB image of ngc7538 a small ( 6' diameter ) faint nebula in Cepheus very near the bubble nebula. The sizz of this is just a hair bigger then the bubble part of the bubble nebula.
Imaged with a Mewlon 250 at f9 and ST10XME 50 mins Lum 1x1 bin and 35 mins Red 2x2 bin were combined for the lum image by overlaying the 1x1 bin over the 2x2 bin and using about a 80% combine ratio so it's mostly 1x1 with a bit of the 2x2 red to give some added signal to the faint areas.
The RGB was 15min each channel 2x2 binning
link
http://starryforge.com/NewStuff/7538LRGBppa.jpg
comments welcomed and appreciated,
clear skies,
Larry Citro
