Ced214 / NGC7822 Widefield (Rollover with Labels)

NGC 7822 Widefield
All Images Copyright Steve Cannistra

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Position Angle: 180 degrees
RA: 00h 03m 08s (J2000)
Dec: +66degrees 51' 26" (J2000)

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Cederblad 214 (Ced214, SH2-171) is a large emission nebula in the constellation Cepheus.  Within Ced214 there are many regions of "elephant trunk" structures created as a result of gas being blown away by UV radiation from one of the brightest UV sources in the nebula, the star BD+66 1673 (RA 00 01 47; Dec +67 30 25, J2000).  This star is contained within a cluster of about 40 hot, short-lived OB stars known as the Berkeley 59 complex (Be59, labeled in the rollover), located slightly above center in this field. As can be appreciated by the "donut hole" in the central part of this complex, gas in this star-forming region is being cleared out by the young, newly formed stars of the Berkeley 59 complex, which emit strong UV radiation, reminiscent of similar nebulae such as IC1396 and the Rosette.  A more detailed view of this region is shown in my prior images taken through SII, Ha, and OIII filters.  More information about this interesting region may be found on Rob Gendler's webpage, and on the APOD website.

Photographic Details:
Scope/Camera:  The widefield "palette" for this image was obtained on September 2, 2022, using the a self IR-modified Canon T7i in conjunction with the Samyang/Rokinon 135mm lens/Canon T71 (5.8"/pixel) on a Star Adventurer mount (9 degree x 6 degree FOV).  Additional Ha and RGB data of this region were also obtained on September 1 and 2, 2022, using my FSQ106/U16M (3.5"/pixel).  The cumulative imaging time to produce the above image was approximately 10 hours.
Additional Details:
Scope:  Takahashi FSQ106 at f5 on the Takahashi NJP Mount.
Autoguider:  SBIG ST-402 with 60mm guidescope, focal length 227mm.
Camera:  Apogee U16M at -20C, with 7 position 50mm square filter wheel (Apogee FW50-7S).
Filters:  Baader Ha, Baader RGB filters.
Post-processing:  Canon Raw files pre-processed in PixInsight. U16M subs were calibrated, aligned and stacked in Maxim, followed by DDP in ImagesPlus (IP).  Further processing in Photoshop CS (16 bit format).

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