Sh2-132, The Lion Nebulae in Cepheus
RW Cephei is a giant K-type hypergiant, one
of the largest stars in the Milky Way.
If RW Cephei was our sun, Jupiter
would nearly graze its surface.
Hover over the picture for an annotated version
Date: 14 and 24 June 2024
FOV: approximately 2° 30' × 1° 40'; the angular size of Sh2-132 is 30' by 20'
Telescope: Stellarvue SVX102T + SFFR.74 reducer (523mm f/5.25)
Guiding: ZWO ASI120MM mini mono guide camera,
Stellarvue F050G 50mm guide scope
Computer: ASIair pro Raspberry Pi
Mount: iOptron CEM40
Camera: ZWO ASI071MC Pro Cooled (-10°C) Color CMOS
Pixel size: 4.78 μm
Resolution: 1.879 arcsec/pixel
Filter: 14 June: L-Ultimate Dual Narrow Band, 41 frames, gain 240
24 June: Optolong Optolong L-eNhance Dual Band, 67 frames, gain 90
Calibration 20 dark flats, 20 darks, and 20 flats each session
preprocessed in Pixinsight
Total Time: 7 hours 12 minutes
Processing: Pixinsight – L-eNhance cropped frame → eNh
L-Ultimate cropped frame, ChannelExtraction → R, G, B,
PixelMath G + B → OIII, LRGBCombination R + G + OIII → Ult
PixelMath eNh + Ult → Linear, SPCC, DBE, SPCC, BXT, NXT,
MStr, GHS, HST, PMath MStr + GHS + HST → Stars, Sat,
StarXT, MStr, GHS, HST, PMath MStr + GHS + HST → Starless,
HDR64PhLm, Sat, PMath ~(~Stars*~Starless) → Blend, scale
Location: Darling Hill Observatory near Vesper, NY
