Two panel mosaic of the region from Sh2-119 (the Clamshell nebula) to NGC700 (North America nebula) and IC5070 (the Pelican nebula) in Cygnus on the nights of November 1-3&5, 2023.  

Imaged with 85mm/F1.4 Rokinon at F/2.8, UVIRcut and Optolong LeNhance dual narrowband filters, and ZWO ASI 533MC Pro.

Total integration time of ~5.5 hours (per mosaic panel):
UVIRC filter = 60 subs at Gain = 100 with an exposure time of 30 seconds
LENH NB filter = 75 subs at Gain = 100 with an exposure time of 240 seconds

All images pre-processed using Pixinsight's weighted batch pre-processing script (WBPP) to perform calibration, debayering, registration, local normalization, and integration.  Background removed using GradXpert.  For each filter, aligned panels using StarAlignment and merged using GradientMergeMosaic process.

OSC RGB image processing (for stars):  Initial post-processing in Pixinsight:  spectrophotometric color calibration, blur x terminator, and noise x terminator.  Generated stars only version using StarXTerminator.  Histogram stretch using STF stretch parameters.

Narrowband image processing (for nebulosity):  Initial post-processing in Pixinsight: BlurXterminator and NoiseXterminator.  Generated starless version using StarXterminator.  Masked stretch, generalized hyperbolic stretch, curves adjustment, ezhdr, and narrowband normalization process (Mode 1 for SHO palette style image, Mode 2 for HOO palette style image).  Final image generated by combining OSC RGB stars only and HOO starless images using Pixelmath process.


Original version:  Original mosaic, Image generated from HOO narrowband nebula and OSC RGB stars images

Rev B:  Original mosaic, starless version

Rev C:  Narrowband variant #1, NB normalization Mode 2 for HOO palette style image

Rev D:  Narrowband variant #1, starless

Rev E:  Narrowband variant #2, NB normalization Mode 1 for SHO palette style image

Rev F:  Narrowband variant 2, starless