Sh2-240, Simeis 147, or the Spaghetti Nebula is a faint
supernova remnant located betwen Auriga and Taurus
Hover over the picture for an annotated version
Date: 15 January 2026 and 5 February 2024
FOV: Approximately 6° 45' × 4° 30'
Rotation: -89.857°
Telescope: Askar FRA300 pro (298.92mm f/5 Petzval)
Guiding: ZWO ASI120MM mini mono guide camera,
SVBony SV165 Mini 40mm f/4 guide scope
Computer: ASIair pro Raspberry Pi
Mount: ZWO AM5 mount
Camera: ZWO ASI6200MC Pro Cooled (-10°C) Color CMOS
Pixel size: 3.76 μm
Resolution: 2.594 arcsec/pixel
Frames:37 × 300 seconds × 100 gain, Optolong UV/IR filter 2026
65 × 300 seconds × 100 gain, Optolong L-Ultimate filter 2026
67 × 240 seconds × 300 gain, Optolong L-Ultimate filter 2024
Stacking: one hundred and sixty-nine frames using Pixinsight
Calibration: 20 darks, 20 flats, and 20 dark flats per session
Total Time: 12 hours and 58 minutes
Processing: Pixinsight – SPPC, DBE, SPCC, BlurXT, NoiseXT, DynCrop → Linear
MStr, GHS, HST, PMath MStr + GHS + HST → Stars, Sat,
StarXT, MStr, GHS, HST, PMath MStr + GHS + HST → Starless,
CurvesTr, HDRMST4PhLm, PMath ~(~Stars*~Starless) → Blend, scale
Location: Corazones Draw Ranch near Terlingua, TX15 January 2026
Darling Hill Observatory near Vesper, NY5 February 2024
