North America to Butterfly
North America to Butterfly: This wide-angle mosaic image from the constellation of Cygnus or the Swan covers one of the most dramatic parts in the sky. It spans from the North America Nebula (NGC 7000) on the left to the Butterfly Nebula (IC 1318) on the lower right. Numerous emission and dark nebulae can be observed. Many of the stringlike features are presenting shock or ionisation fronts, where the light of very luminous young stars brings the interstellar matter to glow. The whole area is one of the hugest stargenerating regions known.
The bright star above center is Deneb, the brightest star in the constellation of Cygnus.
The two-panel mosaic image was composed from frames taken with three different narrow band filters letting pass only the H-alpha line of hydrogen, the [OIII] line of oxygen and the [SII] line of sulfur. The composition was done using the socalled Hubble palette for arranging the colors.
This image has been selected Astrophoto of the Week by astronomie.de
Object |
North America to Butterfly |
|---|---|
Catagory |
Emission Line Images |
Designation |
NGC 7000, IC 1318 |
Constellation |
Cygnus |
Optics |
Canon EF lens 200mm 1:2.8 @ f/3.5 |
Camera |
SBIG STL 11000M with internal CFW 5 |
Exposure |
Two sets of 6 x 20min H-alpha, 4 x 20min [OIII], 4 x 20min [SII] Baader filterset. Maxim DL for image acquisition |
Calibration |
Dark + Flat Frame |
|---|---|
Guiding |
Meade DSI Pro II and Skywatcher ED80 as Guide Scope, Maxim DL as guiding software |
Mount |
Takahashi EM-11 |
Processing |
Maxim DL5,Registar,Photoshop. Color Code R:[SII], G:H-alpha, B:[OIII] |
Location, Date |
Eningen, Germany 23,24 May + 13,14,19,20 July 2010 |
Remark |
2-panel mosaic |
