Getting plate-solving status, please wait...
NGC7023, another take, 



    
        

            Salvatore Iovene

NGC7023, another take

Getting plate-solving status, please wait...
NGC7023, another take, 



    
        

            Salvatore Iovene

NGC7023, another take

Imaging telescopes or lenses: Sky-Watcher 80ED

Imaging cameras: Canon EOS 450D / Digital Rebel XSi / Kiss X2

Mounts: HEQ5

Guiding telescopes or lenses: Sky-Watcher 70/500

Focal reducers: Teleskop-Service 0.8x

Software: PixInsight


Dates:Sept. 21, 2011

Frames:
1x420" (7') ISO800
13x600" (2h 10') ISO800

Integration: 2h 17'

Avg. Moon age: 23.05 days

Avg. Moon phase: 40.43%

Bortle Dark-Sky Scale: 5.00


Basic astrometry details

Astrometry.net job: 107575


Resolution: 2888x1676

Locations: Home pier, Espoo, Finland

Description

Finally I had a chance to do the Iris nebula again, this time properly. The first time I tried, the Moon was full and the sky was still slightly glowing of sunlight, because the Sun wasn't 18 degrees below yet.

This time I managed 13 subs of 600 seconds, plus one sub of 420 seconds.

The blue part of the nebula is now clearly visible, and it extends well beyond the core that I managed to image previously.

Even some of the dark nebulae around it hint their existence, although very subtly.

They'd need more aperture, longer exposure times, and, of course darker skies.

Speaking of which, the sky was particularly dark last night, and I estimated a visual limiting magnitude of 5. The absence of the snow helps!

Comments

Histogram

NGC7023, another take, 



    
        

            Salvatore Iovene