The Iris Nebula, NGC 7023 or Caldwell 4, is a bright and colorful reflection nebula (a nebula which reflects the light from a nearby star) found in the constellation Cepheus located some 1,300 lightyears away! It gets the name from its resemblence to the flower (both in structure and purple-blue nebulosity). The object NGC 7023 is actually an open cluster within a bunch of interstellar dust called LBN 487 and the nebula is lit up by the bright star SAO 19158 (mag +7 star, illuminating this dust pocket to a magnitude +6.8). The vast amount of dark nebulae (the structure is really hard to pull out with my current equipment and location) visibly obscures the nearby stars, which is why we can see "voids" where no stars are visible.
Overall, this was a really fun target to shoot, but a really hard one to process due to crunchy noise. I plan on collecting more light on this target in the future with intention pull out fainter nebulosity and combat scattery noise.
June 24th, 2019 ~58.58% moon illumination
Telescope: Orion SpaceProbe 130ST Reflector
Guide Scope: Astromania 50mm Guide Scope
Mount: Orion SVP GoTo
Imaging Camera: ZWO ASI178mc
Guide Camera: ZWO ASI120mc-s
Filter: Baader Moon & SkyGlow Filter
Data Acquired (Total Integration: 3 hours and 42 minutes)
Lights (Gain: 50, Temp: ~23 °C): 74x180 seconds
Dark Flats: 20
#astrophotography #astronomy #photography #nightphotography #deepskyobjects #deepspace #space #ngcobjects #caldwellobjects #interstellardust #dust #nebula #reflectionnebula #ngc7023 #caldwell4 #irisnebula #darknebula #oriontelescopes #zwo #backyardastrophotography - 1 hour ago