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
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
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The Crescent Nebula
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Cave Nebula
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Lion Nebula
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IC 447
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Coathanger, Loch Ness a.o.
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Sh2-140
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Comet C/2022 E3 (ZTF)
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Clamshell Nebula
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Clamshell Nebula in HOO
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The Dark Mermaid
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NGC 6914
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Bode's Galaxy
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Butterfly Nebula (IC 1318)
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Butterfly Nebula (HOO)
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NGC 7822
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Cone Nebula (RGB)
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Cone Nebula (HOO)
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Loch Ness Nebula
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Heart Nebula
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Heart & Soul Nebula
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Iris Nebula
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Horsehead Nebula
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Horsehead Nebula (SHO)
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Pinwheel Galaxy
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Elephant's Trunk Nebula
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Sh2-134 Widefield
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Flaming Star Nebula
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IC 410
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M 13
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M 38 in HaRGB
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Andromeda Galaxy
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NGC 5033 & Friends
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Orion Nebula
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Leo Triplet
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Jellyfish Nebula
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Jellyfish Nebula in HOO
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Regulus & Leo I Dwarf Galaxy
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Sh2-86
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Jellyfish Nebula in HOO
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Regulus & Leo I Dwarf Galaxy
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Sh2-86
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M 3
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h and χ Persei (HaRGB)
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h and χ Persei (RGB)
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VDB 14 & 15
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Northamerica Nebula
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M 106
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Sh2-120 & NGC 7031
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NGC 188
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Tulip Nebula
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Markarian's Chain
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Wizard Nebula
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Bubble & Lobster Claw Nebula
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Copernicus
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M 35 & NGC 2158
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Mare Imbrium
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M 44
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M 53 & NGC 5053
