Here is the very sharpless SH2-126. It's a huge object : the 2 field mosaic is 5.5x4° !
6h40 mn exposure (20mn subs) for each field, it's a four days project. And that's a mere minimum for this very weak signal.
The framing is a bit off, but it has been done purely on coordinate as it's very weak on single 20mn exposures.
Here is a reference image that shows this object should be done in both narrow and broad band filtering : http://www.bucksnortobservatory.com/deepspace_pages/Sharpless126_LBN-438.shtml
Last Updated (Sunday, 27 October 2013 18:43)
SH2 205 206 209 NGC1496 Amas King 7
A difficult large field in HA with the FS60.
The large HII is SH2-205, up right is NGC1491/SH2-206 and in the top right corner SH2-209. We can also see NGC1496 and King 7 clusters
TYC 3339-76-1 star shows a glow that could be the star cluster DSH J0402.3+5226 unresolved. Actually there are a lot of radio and IR sources near this star.
Soft processing given the quite low SNR with 7h20 exposure.
FS60 with Borg 7780 at F/D 3,9, QSI583, Astrodon 5nm filter.
Last Updated (Saturday, 19 October 2013 16:13)
Coronal mass ejection