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Contains:  NGC 7023
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NGC 7023 Iris Nebula, 


NGC 7023 Iris Nebula

NGC 7023 Iris Nebula

Technical card

Imaging telescope or lens:Canon EF 400mm f/5.6L USM

Imaging camera:Canon EOS 70D

Mount:SkyWatcher Star Adventurer

Guiding telescope or lens:Orion Mini 50mm Guide Scope

Guiding camera:Lacerta MGEN 2

Software:Adobe LightroomPleiades Astrophoto PixInsight

Resolution: 5370x3586

Dates:Aug. 8, 2016

Frames: 60x180" ISO1600

Integration: 3.0 hours

Darks: ~27

Bias: ~97

Avg. Moon age: 5.37 days

Avg. Moon phase: 29.25%

Bortle Dark-Sky Scale: 3.00

Temperature: 12.00 job: 1202748

RA center: 315.365 degrees

DEC center: 68.155 degrees

Pixel scale: 2.151 arcsec/pixel

Orientation: 179.130 degrees

Field radius: 1.929 degrees

Locations: Gurnigel 1608m, Bern, BE, Switzerland


I'm very happy with this result of NGC 7023 :-)

I tried the Iris Nebula a few weeks ago from my light polluted home:

Just 20 minutes (13 x 90s) at 280mm without guiding. But that's not camparable with this one...

I was very careful with the polar alignment and balance. And I had luck. I did a test shot with 180 seconds (this time I've from a calculation chart that I found in the net... it's based on the declination value of the object, focal lenght and some other things) and was very pleased with the result :-)

On 2-3 subs I had a very small dec-drift. But all in all I'm very impressed about the capabilities of the MGEN and the Star Adventurer. Also the Dithering is great! Almost no background noise structures anymore :-)

Unfortunately I noticed very late the dew on the lens during the session...
More than one hour was worthless...


License: None (All rights reserved)


  • NGC 7023 Iris Nebula, 


  • NGC 7023 Iris Nebula, 


  • NGC 7023 Iris Nebula, 


  • NGC 7023 Iris Nebula, 


  • NGC 7023 Iris Nebula, 


  • Final
    NGC 7023 Iris Nebula, 



Sky plot

Sky plot


NGC 7023 Iris Nebula,