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The Iris Nebula, also known as NGC 7023, is a bright reflection nebula and Caldwell object in the constellation Cepheus. NGC 7023 is actually the cluster within the nebula, LBN 487, and the nebula is lit by a magnitude +7 star, SAO 19158. It shines at magnitude +6.8. It is located near the Mira-type variable star T Cephei, and near the bright magnitude +3.23 variable star Beta Cephei (Alphirk). It lies 1,300 light-years away and is six light-years across. |
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Location |
Filipaioi Grevena 1-3 August 2019 |
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Telescope |
Altair Astro 115 F7 ED Triplet APO |
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EQ Mount |
Sky-Watcher AZ EQ6-GT |
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Camera |
QHY9 CCD, temp -25 C |
| Guiding |
Guidind TS OAG, QHY5L II, PHD 2 |
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Filters / Exposures |
L 25x600 sec bin 1x, RG B 12x300 bin 2x |
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Total Exposure time |
7,5 ~ hours |
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Software |
Nebulosity 4, Maxim DL, Pixinshight, Photoshop CC |
