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Contains:  NGC 6995, Veil nebula, Network nebula, NGC 6992, IC 1340
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NGC6995 - Eastern Veil  /  Hexenhand, 





    
        

            Lars Stephan
NGC6995 - Eastern Veil  /  Hexenhand

NGC6995 - Eastern Veil / Hexenhand

Technical card

Resolution: 2328x1760

Dates:Sept. 29, 2018

Frames:
TS 1,25" Ha7nm Filter: 101x60"
Baader O3 1.25'' 8.5nm: 93x60"

Integration: 3.2 hours

Avg. Moon age: 19.10 days

Avg. Moon phase: 80.23%

Astrometry.net job: 2704000

RA center: 314.207 degrees

DEC center: 31.369 degrees

Pixel scale: 2.033 arcsec/pixel

Orientation: 97.026 degrees

Field radius: 0.824 degrees

Data source: Backyard

Description

Das war meine erste Schmalbandaufnahme mit dem Refraktor. Für den H-alpha-Filter sind 60 Sekunden pro Bild noch etwas wenig. Hier kommt das Rauschen durch, da nicht mit Dithering gearbeitet wurde.
Hier noch ein Link zur Animation mit der POSS II - Aufnahme (Blauauszug) von 1983:
http://www.sternwarte-usedom.de/bilder/Astrofotos/Sommer/Cirrus/NGC6995-Animation-sw-1600x1200.gif

That was my first narrow band photo with the refractor. For the H-alpha filter, 60 seconds per image is still a little short. This is where the noise comes through, because they didn't work with dithering.
Here is a link to the animation with the POSS II (blue excerpt) from 1983:
http://www.sternwarte-usedom.de/bilder/Astrofotos/Sommer/Cirrus/NGC6995-Animation-sw-1600x1200.gif

Comments

Author

LarsSt
Lars Stephan
License: None (All rights reserved)
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NGC6995 - Eastern Veil  /  Hexenhand, 





    
        

            Lars Stephan