Friday, August 28, 2015

Pelican can wait

Here it is some color added to hydrogen black and white picture from Pelican in Swan post. Hydrogen presence has been mapped to green color, sulphur to red, and oxygen to blue - this is so called HST color palette. It was made popular by the pictures from Hubble Space Telescope. 
Here I gathered 4.5h with hydrogen filter (which is pretty enough) and 2h for each sulphur and oxygen filter (which is not enough, although exposed in bin2 mode). I will collect more photons, but not in the near future - Pelican can wait :)

IC5067 nebula in Swan (false color)

Setup: current :) That means - TS 130/910 apochromatic triplet with 0.79x 3" reducer/flattener, Atik383L+ mono camera, Baader 36mm filter set, EQ6 belt modded mount, guided with ASI120MM and off axis guider.
Clear skies!

Sunday, August 23, 2015

Too many stars in color

Time has come to colorize new refractor first light. I collected some exposures of M27 Dumbbell nebula with RGB filters, and here is the result:
M27 planetary nebula in Vulpecula
Total exposure time was 50 minutes for luminance and 30 minutes for each of RGB filters. Each single exposure was 5 minutes long. Below crop 1:1 with nebula centered (right click and open in new window to see full resolution):
M27 nebula 1:1 crop
Image pixel scale is 1.5"/px. Shot under moderate sky - about 5 mag NELM.

Clear skies!

Friday, August 21, 2015

Pelican in Swan

There is autumn incoming shortly, and one of this season gems (in northern hemisphere) is Cygnus (The Swan). It flies ofer the reach Milky Way region, and we can find there whole lot of star clusters and nebulaes. Nearby the Deneb - birghtest star in Cygnus there is large (over four degrees of apparent diameter) nebulae complex, and part of this complex is IC5070 Pelican nebula. And part of this nebula (designated IC5067) I pictured over last two nights. 
IC5067 - part of Pelican nebula in Cygnus

Picture above has been shot with Atik383 mono camera, Baader Ha filter and TS130/910 refractor with 0.79x reducer. Exposure time was 18x15 minutes. Below there is 1:1 crop of the ionisation front, where new stars are born.
Star forming region in Pelican nebula
Clear skies!