Hemisphere:  Northern  ·  Constellation: Draco (Dra)
RY Draconis carbon star (spectro inside), 



    
        

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RY Draconis carbon star (spectro inside)
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RY Draconis carbon star (spectro inside)

RY Draconis carbon star (spectro inside), 



    
        

            apricot
RY Draconis carbon star (spectro inside)
Powered byPixInsight

RY Draconis carbon star (spectro inside)

Equipment

Imaging Telescopes Or Lenses
Teleskop Service - Orion Optics TS 8" f/4.5 ONTC Carbon Tube Newtonian
Imaging Cameras
Atik 314L+
Mounts
Skywatcher AZ-EQ6 GT
Filters
Paton Hawksley Education Ltd Star Analyser 200 · B · G · Astronomik IR 742nm
Accessories
Baader Coma corrector RCC-1
Software
PixInsight · Valérie Desnoux Visual Spec · Christian Buil Isis

Acquisition details

Dates:
May 17, 2014
Frames:
Astronomik IR 742nm: 13x30" (6' 30") bin 1x1
B: 13x30" (6' 30") bin 1x1
G: 13x30" (6' 30") bin 1x1
Paton Hawksley Education Ltd Star Analyser 200: 35x10" (5' 50") bin 1x1
R: 13x30" (6' 30") bin 1x1
Integration:
31' 50"
Avg. Moon age:
17.71 days
Avg. Moon phase:
90.48%

Basic astrometry details

Astrometry.net job: 406976

RA center: 12h56m42s.0

DEC center: +65°5306

Pixel scale: 1.473 arcsec/pixel

Orientation: 76.276 degrees

Field radius: 0.355 degrees

Resolution: 1391x1039

Locations: @home under the street lights, Pibrac, Haute Garonne, France

Description

V* RY Dra (HD 112559 )

Semi-regular pulsating carbon star (spectral type C)

The image A is a combination of Near Ir R G B filters. The animated gif B shows each individual filter image. Note how the star is bright in the IR compared to the blue range. Its spectrum was acquired with a SA200 star analyser in the filter wheel, calibrated for dispersion and instrumental response correction.

Comments

Revisions

  • RY Draconis carbon star (spectro inside), 



    
        

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    Original
  • RY Draconis carbon star (spectro inside), 



    
        

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    B
  • Final
    RY Draconis carbon star (spectro inside), 



    
        

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    C

Sky plot

Sky plot

Histogram

RY Draconis carbon star (spectro inside), 



    
        

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