Waid Observatory

Object: Sharpless 206 / NGC 1491
Date: Nov. and Dec. 2017    -    Location: Denton, TX
Telescope: ATRC12  Mount: MI-250   Camera: ST-10XME
Exposure: SII = 520 min. - Ha = 420 min. - OIII = 600 min. - RGB for Stars = 60 min. each
Guided using Innovations Foresight On Axis Guider (ONAG)
Click on the image below to view at higher resolution.




Sharpless 206 / NGC 1491

Sharpless 206, as designated in the Sharpless Catalog, also carries the desagnation NGC 1491.  It is located in the constellation Perseus approximately 10,000 lightyears from the Earth.  Radiation pressure and stellar winds from the bright star (GSC 3339:339) located near the center of the image has cleared a cavity in the nebula and shaped the surrounding prominent columns and pillars.

The image above is known as a mapped, or false, color image and was acquired using narrowband filters.  It was assembled using the standard Hubble palette with SII mapped to Red, Ha mapped to Green and OIII mapped to Blue.  The stars were overlaid with color data from a separate RGB image.


Copyright Donald P. Waid