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NGC 7023 Iris Nebula (APO120 RMod).jpg
This is the bright blue reflection nebula, NGC 7023, aka the Iris Nebula, in Cepheus, amid a region of dark and faintly glowing clouds of interstellar dust. The bright red star at upper left is the variable star T Cephei.
This is a stack of 25 x 8-minute exposures through the Askar APO120 refractor at f/7 with the 1X Flattener, and with the filter-modified Canon R camera at ISO 1600. No filter was employed here.
Taken from home on a very clear night November 10, 2023. Autoguided with the MGEN III guider on the AP Mach 1 mount. Applications of luminosity masks from Lumenzia, a PhotoKemi Actions Nebula Filter action, and a Detail Extractor filter from Nik Collection 6 Color EFX (the latter two applied to a starless layer created with RC-Astro Star XTerminator) brought out the faint background nebulosity and dark nebulas in this dusty region of sky.
This is a stack of 25 x 8-minute exposures through the Askar APO120 refractor at f/7 with the 1X Flattener, and with the filter-modified Canon R camera at ISO 1600. No filter was employed here.
Taken from home on a very clear night November 10, 2023. Autoguided with the MGEN III guider on the AP Mach 1 mount. Applications of luminosity masks from Lumenzia, a PhotoKemi Actions Nebula Filter action, and a Detail Extractor filter from Nik Collection 6 Color EFX (the latter two applied to a starless layer created with RC-Astro Star XTerminator) brought out the faint background nebulosity and dark nebulas in this dusty region of sky.
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- © Alan Dyer/AmazingSky.com
- Image Size
- 6720x4480 / 9.3MB
- www.amazingsky.com
- Contained in galleries
- NGC/IC Objects, My Portfolio, Nebulas

