Carbon Star - RS Cygni

Nice contrast of red RS Cygni and Blue/White Star SAO 69635 which is in itself classified as a double star!

 

Star Details…

Magnitude Range: +6.5 to +9.5

Period (Days): 417

R.A. & DEC: 20 13 23 +38 43 44

Spectral Type: C8 (N0pe)

 

Image details: Date: 27th March 2016

R-Bessell Photometric Filter: 7 seconds x5 exposures, flat fielded, aligned and median combined

G-Bessell Photometric Filter: 14 seconds x5 exposures, flat fielded, aligned and median combined

B-Bessell Photometric Filter: 31 seconds x5 exposures, flat fielded, aligned and median combined

B-V-R folder images were then aligned and stacked to give Master B, V and R images; these were then colour combined in CCDSoft v5

 

CCD Operating Temperature: -35 Degrees Centigrade

Field of View: 46 x 37 arcmins

Pixel Array: 1280 x 1024

Pixel Size: 16um x 16 um

Plate Scale: 2.17 arcsec/pixel

0.2-m SCT+SBIG STL 1301E CCD

f/ratio: 7.6

Done