IC4585

IC4685 can be found in the constellation of Sagittarius. For reference, the Lagoon Nebula is only 1.25 degrees away. The estimated distance is about 4000 light years away. There are many other objects included within the image. There are both emission and reflection nebula. I have focused on the reflection nebula in this image. Some other object include NGC 6559 which is in the lower left part of the image. It kind of looks like an oyster. IC1274 just up and to the right of centre. It's that stripped object with a whitish glow around it. IC4685 is that dark snaky river in the lower part of the image. If a Hydrogen Alpha filter is used to image this same region, the result is an extreamly contrasty image with rivers of dark areas running through it.

 

 

Image Details:

 

Center (RA, Dec):(272.474, -23.836)

Center (RA, hms):18h 09m 53.866s

Center (Dec, dms):-23° 50' 09.751"

Size: 53.7 x 35.8 arcmin

Radius: 0.538 deg

Pixel scale: 0.80 arcsec/pixel

Orientation: Up is -112 degrees E of N

 

 

Instruments:

10 Inch RCOS fl 9.1

Astro Physics AP-900 Mount

SBIG STL 11000m

FLI Filter Wheel

Astrodon Lum, Red, Green, Blue Filters

 

 

Exposure Details:

23 X 900 Bin 1X1 Lum

12 X 450 Bin 2X2 Red

12 X 450 Bin 2X2 Green

12 X 450 Bin 2X2 Blue

 

 

Location

Australia, Central Victoria

Imaged from May-June 2017

 

 

Software:

CCD Stack (Used for calibration / data rejection / registration / stacking )

Photoshop CS 6 (Image processing)

 

Done