| Name: | NGC 7023 |
| Other names: | Iris Nebula |
| Description: | Spiral Galaxies |
| Ascension: | 21 : 00.5 |
| Declanation: | +68 : 10 |
| Apparent diameter: | 18 arcmin |
| Constellation: | Cepheus |
| Magnitude: | 7 |
| Distance: | 1400 light year |
| Equipment: | Meade ETX90-ICX424-f/4.0 |
| Date / Time UTC: | 11 oct 2005 00:00 |
| Stacked : | 168 of 324 (!) |
| Exposure time: | 30 s |
| Location: | The Hague, The Netherlands |
| Other info: | NGC7023 is a minor reflection nebula in Cepheus. The nebula is lying 6 degrees NNW of alpha Cep. This image shows you that there are fewer stars on the outskirts of nebula comparing with outer region. Actually there is a huge dark nebula surrounding the reflection nebula. NGC7023 is emitting white light by reflecting the light of 7th magnitude star passing though in front of the dark nebula by chance.
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© Job Gehéniau
http://www.jgeheniau.nl/etx90/astronomy2.html