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)

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: 407467

RA center: 12h56m25s.4

DEC center: +66°0003

Orientation: -103.800 degrees

Field radius: 0.193 degrees

Resolution: 600x375

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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