Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's nebulae  ·  M 81  ·  NGC 3031
M81 4Hours, 



    
        

            Marcel Demandt
M81 4Hours
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M81 4Hours

Technical card

Imaging telescopes or lenses: GSO 8" f/5 Newton

Mounts: Skywatcher NEQ6 Pro SyncScan VTSB Upgrade 3

Software: ASCOM Platform 6  ·  Fitswork4  ·  Stellarium Scope  ·  PHD2 Guiding  ·  Pleiades Astrophoto Pixinsight Core 1.8  ·  Stellarium  ·  EQMod EQASCOM  ·  APT - Astro Photography Tool

Accessory: Lacerta Off Axis Guider  ·  Pal Gyulai GPU coma corrector  ·  Gerd Neumann Aurora Flat-Field Panel  ·  Poseidon EQ6-USB-Adapter V2.0


Dates:Feb. 3, 2014

Frames:
HUTECH IDAS LPS-D1 2": 6x1200" ISO200
HUTECH IDAS LPS-D1 2": 10x720" ISO400

Integration: 4.0 hours

Flats: ~30

Flat darks: ~30

Bias: ~30

Avg. Moon age: 4.05 days

Avg. Moon phase: 17.46%

Bortle Dark-Sky Scale: 6.00

Temperature: -1.00


Basic astrometry details

Astrometry.net job: 299766

RA center: 9h 55' 22"

DEC center: +69° 3' 50"

Orientation: -167.330 degrees

Field radius: 0.666 degrees


Resolution: 620x456

Description

M81 2014-05-02

120Min. (6x1200sec.) ISO200 / 120Min. (10x720sec.) ISO400 / 30 Flatframes, 30 Flatdarks, 30 Biasframes for each ISO
GSO 200/1000 Newton (selfmade tuning)
Skywatcher NEQ6 Synscan (VTSB mod)
Canon EOS 60D (Ha-mod)
GPU Coma Corrector
Hutech IDAS LPS-D1 2" Filter
Autoguiding per Lacerta Off Axis Guider, Alccd5L-IIc, PHD2 Guiding

Comments

Revisions

  • M81 4Hours, 



    
        

            Marcel Demandt
    Original
  • Final
    M81 4Hours, 



    
        

            Marcel Demandt
    B
  • M81 4Hours, 



    
        

            Marcel Demandt
    C

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Histogram

M81 4Hours, 



    
        

            Marcel Demandt

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