Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent nebula  ·  IC 1318  ·  IC 4996  ·  M 29  ·  NGC 6888  ·  NGC 6910  ·  NGC 6913  ·  The star 34Cyg  ·  The star Sadr (γCyg)  ·  gamma Cyg nebula
Around Sadr in Cygnus, 



    
        

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Around Sadr in Cygnus
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Around Sadr in Cygnus

Technical card

Imaging telescopes or lenses: TAIR 3S 300mm f/4.5

Imaging cameras: Canon 350d Astromod Baader AFC2 Filter

Mounts: Vixen Great Polaris


Dates:June 22, 2014

Frames: 121x38" (1h 16' 38")

Integration: 1h 16' 38"

Avg. Moon age: 24.92 days

Avg. Moon phase: 22.20%


Basic astrometry details

Astrometry.net job: 310129

RA center: 20h18m11s

DEC center: +39°2146

Orientation: 97.906 degrees

Field radius: 2.541 degrees


Resolution: 620x413

Description

No Filter used, suburban light pollution. No guiding. Therefore only short exposures are achievable and sensible.

(Unfortunately the russian TAIR-3S telephoto lenses tourned out to have notably chromatic aberration. Red is not mapped sharp. Nebula details are not visible and stars get a big red halo. Maybe with band pass filters these would be perfect lenses?)

Comments

Revisions

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    Original
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    B
  • Final
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    C

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Around Sadr in Cygnus, 



    
        

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