Carbon Star - RY Draconis

Star Details...

 

Distance: 1,591 light-years

Magnitude Range: +6.0 to +8.0

Period of Variability: ~200 days

Semi-Regular Pulsating Carbon Star

B-V Colour Index: +3.27

R.A. & DEC: 12 56 25 +65 59 39

Spectral Type: C4 (N4p)

 

Image Details...

 

R-Bessell Photometric Filter: 3 seconds x10 exposures, flat fielded, aligned and median combined

G-Bessell Photometric Filter: 6 seconds x10 exposures, flat fielded, aligned and median combined

B-Bessell Photometric Filter: 13 seconds x10 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: -30 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

Date: 17th March 2016

 

Done