Sh2-132, The Lion Nebulae in Cepheus
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,
result stretched three ways: MStr, GHS, and HST,
PixelMath MStr + GHS + HST → PM, HDR8, Sat, Scale
Location: Darling Hill Observatory near Vesper, NY
