The Iris Nebula
NGC 7023
This beautiful, blushing nebula is unique amongst its counterparts. While many of the nebulae visible in the night sky are emission nebulae — clouds of dust and gas that are hot enough to emit their own radiation and light — Caldwell 4, otherwise known as the Iris Nebula or NGC 7023, is a reflection nebula. This means that its color comes from the scattered light of its central star, which lies nestled in the abundant star fields of the constellation Cepheus. Located some 1,400 light-years away from Earth, the Iris Nebula’s glowing gaseous petals stretch roughly 6 light-years across.

Awarded
Amateur Astronomy Photo of the Day
Amateur Astronomy Photo of the Month

AMATEUR ASTRONOMY IMAGE OF THE YEAR 2022
on AAPOD2.com




Image Details
Date
August 7 & 8, September 21, 2022
LOCATion
Hannover (Germany)
Sky Quality
Bortle 5
Telescope
Celestron RASA 8 (203/400 f/2)
Mount
Skywatcher EQ6-R Pro
Main Camera
ZWO ASI 2600 MC Pro
Gain 100, Offset 18, -10°
Focuser
Celestron Motorfocus
Processing
Astropixelprocessor, Photoshop, Pixinsight
Filter
IDAS LPS D2
Exposure
No Filter: 468 × 30″ (3h 54′) & 170 × 60″ (2h 50′)
IDAS LPS D2: 110 × 120″ (3h 40′) & 60 × 30″ (30′)

Total: 10h 54′
Guiding
ZWO ASI 120MM, PHD2
Calibration
Flats, Darks, Darkflats
Software
N.I.N.A., EQMod
Other
Artesky Filter Holder
  
  
Gallery
view image
Nebula
view image
Nebula
view image
Nebula
view image
Nebula
view image
Comet
view image
Nebula
view image
Nebula
view image
Nebula
view image
Galaxy
view image
Nebula
view image
Nebula
view image
Nebula
view image
Nebula
view image
Nebula
view image
Nebula
view image
Nebula
view image
Nebula
view image
Nebula
view image
Nebula
view image
Nebula
view image
Galaxy
view image
Nebula
view image
Nebula
view image
Nebula
view image
Nebula
view image
Cluster
view image
Cluster
view image
Galaxy
view image
Galaxy
view image
Nebula
view image
Galaxy
view image
Nebula
view image
Nebula
view image
Galaxy
view image
Nebula
view image
Nebula
view image
Galaxy
view image
Nebula
view image
Cluster
view image
Cluster
view image
Cluster
view image
Nebula
view image
Nebula
view image
Galaxy
view image
Cluster
view image
Nebula
view image
Galaxy
view image
Nebula
view image
Nebula
view image
Moon
view image
Cluster
view image
Moon
view image
Cluster
view image
Cluster
view image
Nebula