It was a good night at the River Ridge Observatory. I started with the Andromeda Galaxy (aka M31), shooting it with my 11″ SCT Elf at f/1.9 with an Antlia Triband RGB Ultra filter. Three hours of one minute subs auto-aligned and stacked by Sharpcap Pro.
Tomorrow was a work day but it was the first clear night in a while and I wanted to try out a new Antlia Triband RGB Ultra filter. This filter is designed to provide a more color balanced image than other light pollution filters. It is like a dual narrowband, which have two colors, but not quite as narrow perhaps but with a third channel to let blue in.
Monday night was warm but there was no breeze to shake the scope or dew until 3 AM or later. I didn’t plan to but stayed until 4:30 before packing up for the night. I shot five objects but one was disappointing (not the filter’s fault) so here are the other four in the order they were taken. Make sure you go all the way. Click for a larger image.
M20, the Trifid Nebula, and M21 aka Webb’s Cross, the cluster on the right. In Sagittarius.
M4, a globular cluster in Scorpius.
M16, the Eagle Nebula in Serpens with it’s “Pillars of Creation”.
IC 1396, the Elephant Trunk Nebula in Cepheus.
Saturday was clear and mild but with a just past first quarter Moon. I got there around 7:30 and left around 4AM. I tried for three objects, two were semi-successful though I’ve probably done better on both before. I blame the Moon.
It’s early in the season for the Lagoon Nebula. As far as stellar nurseries go, this is second only to the Orion Nebula for proximity and brightness. It is visible to the naked eye. I shot it through the Little Rock light dome but my dual narrowband filter undoubtedly helped with this. I’ve never noticed that it resembles a lioness head facing right until now.
This the “Witch’s Broom Nebula”, part of the Veil Nebula in Cygnus. This is a remnant of a supernova that occurred about 30,000 years ago. My sleep deprived mind sees the east coast of the U.S. That’s “Maine” in the upper right and “Florida” at the bottom center. The “Appalachians” are obvious but too far west.
